Showing posts with label human evolution. Show all posts
Showing posts with label human evolution. Show all posts

Saturday, May 02, 2020

Paleolithic Papers #35

Genus Homo:


H. sapiens:

The late Pleistocene dating for Cooper's Ferry is disputed and here is the response.

H. neanderthalensis:

Neandertals made string, cord or twine.

H. antecessor:

H. antecessor is either the last common ancestor for Denisovans, Neandertals and modern humans or really, really close to it.

H. heidelbergensis:

The Broken Hill skull has been dated from ~299 thousand years gao.

H. naledi:

The DH7 juvenile skeleton gives some insight as to how H. naledi matured.

H. erectus:

H. erectus lived alongside paranthropus and australopethicus in South Africa.

Carnivores were responsible for the accumulation of H. erectus fossils at Dmanisi.

Genus Australopithecus:

A. afarensis:

Lucy's brain grew like a modern human's, but was organized like an ape's.

META:  

What did ancient humans look like?

How thick was the enamel on plio-pleistocene hominins?

How did the talus evolve in early hominins?

Were there multiple descents from the trees?

The role of cladistics in paleoanthropology.

Saturday, February 22, 2020

Paleolithic Papers #34

Genus Homo:

Modern human and Neandertal relics are washing up on shore in the North Sea.

Neandertal DNA might be more common in modern humans than previously thought.

What cave art reveals about human nature.

Scientists have uncovered a ghost lineage of ancient hominins in West African genomes.

Was there evidence of a technological break or gap or evolution at a cave in Israel?

Modern Humans (H. sapiens):

Mesolithic site  remains show cooking tubers took place.

Pottery from the Amur River region from the late Pleistocene has been found.

Settling of the Americas remains complex with outliers in cranial morphology being found.

How old is the oldest H. sapiens skull?  The one from Florisbad.

A skeleton of a 30 year old woman from Mexico dating from the end Pleistocene/dawn Holocene has interesting insights to the early native American populations.

What was the climate variability like during the early expansions of modern humans out of Africa?

Neandertals (H. neanderthalensis):

The last Neandertals might have lived at Byzovaya, above the Arctic Circle in Russia.

Neandertals made an epic trek 60k years ago to the Altai Mountains.

There is evidence of two separate migrations into Asia by Neandertals.

Inbreeding might have been the doom of Neandertals.

Denisovans:

Mitochondrial DNA from Densovans has been found in modern human nuclear DNA.

Denisovans were more complex than we originally thought.

Meet the Denisovans.

H. antecessor:

Two juvenile scapula from Spain are examined.

H. erectus:

H. erectus arrived in Java 200,000 years later than originally thought.

H. erectus might have engaged in long range trade for obsidian.

Genus Australopithecus:

A. anamensis:

What ecology did A. anamensis live in?

META:

Nasty recessives aren't an obstacle to introgression between hominins.

What we have learned about human evolution and what remains to be understood?

African climate forcing simulation for the last 140,000 years and its implication for human evolution.

There's a new method for figuring out where ancient humans came from.

Human language probably evolved gradually.

When did hominins begin to understand death.

How to estimate the contamination of ancient DNA by modern.

Saturday, November 30, 2019

Paleolithic Papers #33

Genus Homo:

Were the other hominins the first victims of the Sixth Mass Extinction?

45,000 year old projectiles have been found in Europe.

45,000 year old microlith tools have been found in Sri Lanka.

How long range endurance evolutionary pressure shaped the modern human heart.

Teeth from modern humans and possibly Neandertals have been found in the Manot Cave in Israel.

Foot bones from the Manot Cave appear to be both Neandertal and modern human.

What was the environment of the Manot Cave in?

Analysis of premolar teeth roots suggest a very complex demographic situation in China during the Pleistocene.

Modern Melanesians have introgressed genes associated from Denisovans and Neandertals.

There are genetic traces of paleolithic populations in North Africa.

There are potential adaptations to bipedalism in H. sapiens in the thoracic and lumbar vertebrae.

John Hawks questions whether or not the 3 root teeth found in east asians is really an introgression from Denisovans.

H sapiens:

What would a truly modern human look like?

The coastal paleoecology of modern humans in Easter Africa from the Pleistocene to Holocene.

Humans have been harvesting clams along the coast of British Columbia since at least the Terminal Pleistocene.

Was modern humanity's original home the wetlands of Botswana?

Modern humans may have followed the monsoons out of Africa.

These Yana Culture (modern humans) lived above the arctic circle 30,000 years ago.

H. neanderthalensis:

A spat over Upper Paleothic tech has begun.

Some dispute Neandertals were the source of cave art in Spain.

However, an eagle talon necklace was found in for the first time in Spain and has been ascribed to the Neandertals.

The Neandertal teeth of Marillac get examined.

H. erectus:

Hamadryas baboons are used as a proxy to understand H erectus behavioral evolution.

H. erectus could have been a persistence hunter based on estimated water loss.

Genus Australopithecus:

How Australopithecus changed how we thought humanity evolved.

Cerebral blood flow rates in Australopithecines was lower than in modern great apes for similar brain sizes.

Studying the origination and extinction of hominin species using A. anamesis, A afarensis, and Aridopithecus ramidus.

Genus Orrorin:

The environment of the site where Orrorin died was swampy.

Genus Danuvius:

A new bipedal brachiator ape from the Miocene recently found from Germany may usurp the Dryopithecus from the ancestral position for hominins.

META:

The hominiod to hominid difference in third molar enamel.

How human brains develop differently than great ape.

How scientists know human ancestors ate bugs.

Differences between human and other primate saliva might be because of diet.

The brain was considerably reorganized during hominin evolution.

When did hominins become behaviorally and psychologically modern?

Studying stone flakes can tell a lot about hunter gatherer behavior.

Saturday, September 28, 2019

Paleolithic Papers #32

Genus Homo:

H. sapiens (modern humans):

Stone tools have been recovered from Cooper's Ferry, Idaho (USA) dating from 16,000 years ago.

Was the basal most H. sapiens surprisingly modern 500,000 years ago?

Human hearts evolved for endurance.

Foot prints have been found on Calvert Island, British Columbia dating from over 10,000 years ago.

H. neanderthalensis (Neandertals):

There was a shift at a single site of how stone tools were made during Late Acheulian the at Caune de l’Arago.

Did modern humans and Neandertals keep interbreeding over a long period?

Did the Neandertal Eustachian tube contribute to their extinction?

Neandertals were more innovative with their tools than normally credited.

The Neandertals footprints give insight into their social lives.

How Neandertals used birds, including their feathers, in the Qesem Cave, Israel.

Denisovans:

Denisovans seem to have had fingers more like modern humans than Neandertals.

Using genetics and epigenetics, researchers have reconstructed the shape of the face of at least one Denisovan.  The facial features are distinct from Neandertals and modern humans.

The introgression of Denisovan genetics into modern humans gave us an immunity boost.

Sima de los Huesos Hominin

At least one of the Simea de los Huesos proto Neandertals seems to have been murdered.

One of the hominins at Sima de los Huesos had a pathological growth for its ears.  It might not have made the individual deaf after all.

The cochlea evolution of the Simea de los Huesos Hominins gets examined.

H. naledi:

H. naledi's baby teeth were unique.

Genus Paranthropus:

P. robustus:

The femural neck of P. robustus gets examined.

Genus Australopithecus:

What were the Australopithecines?

Australopithecines seem to have breast fed longer than their contemporaries.

A. anamensis:

A nearly complete skull of A. anamensis gives a face to the species and shows evolution is messy showing even in hominins species often overlap in time.

META:

The trabecular boot gets examined in 4 different hominins.

Humans are unique in how they digest fatty foods.

Did a single gene mutation 3.3 million years ago make hominins prone to heart attacks?

Saturday, August 24, 2019

Paleolithic Papers #31

Genus Homo:

Apparently, there has been selection against the archaic components of the genome when interbreeding hast taken place between modern humans and other hominin species.   

Could cooking have shaped our evolution for the last 2 million years?

More articles about the two previously undetected hominin relatives people seem to have interbred with.

Rock art requires a relatively high density demographic.

Modern Humanity (H. sapiens):

Tetrapod Zoology goes into five "mysterious" cave paintings.

Two Patagonian volcanic caves have evidence of people for the last 19,000 years.

Late Pleistocene fossils of modern humans have been found across the Wallace Line.

Mesolithic fire pits from the Netherlands get studied.

Modern humans occupied the Ethiopian highlands sometime between 31 kya to 47 kya.

An infant burial was found from Late Pleistocene Morocco

Human presence evidence from the Upper Paleolithic of Joran.

Ancient tools suggest modern humans spread across Eurasia earlier than previously thought.

Neandertals (H. neanderthalensis):

Studying Neandertal brains may give insights to modern human brain evolution.

The virtual reconstruction of the Apidima-2 skull.

The paleogenetic analysis of the Gibraltar Neandertals shows two different populations separated by time.

Half of Neandertals suffered from surfers ear, strongly implying they spent a lot of time in the water gathering food.

A Neandertal tooth was found in the Zagros Mountains.

Denisovans:

Could the 3 rooted second molar in the first Denisovan mandible be morphological evidence of introgression into modern populations?

Did Denisovans intentionally carve and paint this rock?

Denisovans are starting to come into the paleoanthropological light.

Hobbits (H. floresiensis):

Meet the hobbits of Indonesia.

H. erectus:

The Koobi Fora site in Kenya gets more support for being evidence of early use of fire.

H. naledi:

Meet Homo naledi.

Genus Australopithecus:

A. africanus mothers appear to have nursed their children for at least a year.

Authors of a new paper are arguing StW 573's skull shows it to be a different species than A. africanus.

META:

Hominin fossils seem to indicate early human species had teeth development similar to modern humans.

A single gene mutation 2 million years ago might explain why humans are prone to heart attacks.

There were significant environmental changes in the Middle Pleistocene in Europe.

Saturday, July 13, 2019

Paleolithic Papers #30

Genus Homo:

Just how many ghost lineages are hiding in the human genome?

Demographics modeling and the genetic introgression of hominins.

Modern Humans (H sapiens):

The Apidima 1 fossil from Greece is of H. sapiens, but dates from 210 kya.  This is far, far older than previously thought for modern humans to be outside of Africa.  Apidima 2 is a Neandertal and younger.

While exploring part of the genome associated with the sense of smell, scientists found genes from Neandertals and an unknown human relative.

The routes of modern humans into Australia get revisited.

What was being eaten at the Manot Cave, Israel roughly 40 kya.

What made humans the 'fat primate?'

Has evidence of murder from the Paleolithic been found?

The genetic components of height in prehistoric Europe are explored.

The genetic and archaeological evidence for the peopling of the Americas.

Using genetic introgression evidence to infer when modern humans dispersed into the rest of the world.

Neandertals (H. neanderthalensis):

Evidence from Italy shows Neandertals circa 170k years ago during the Pleistocene butchering already dead carcasses of elephants.

The migration history of Neandertals get revealed via DNA studies.  Neandertals in Europe were pretty stable as a genetic population for at least 80k years.  They migrated east into Siberia and seem to have been very distantly related to the Neandertals that lived there previously.

Neandertals used resin to glue stone tools to shafts and whatnot.

Neandertals repeatedly used the 'Ein Qashish site as a rarely found open air settlement between 54,000 years ago to as far back as 71,000 years ago.

The Geißenklösterle Cave layers are radiometrically dated.

H. erectus:

There are reports of a find in Indonesia of 1.8 mya Homo erectus fossils.

Rising Star Hominin (H. naledi):

The femoral neck and shaft structure gets examined.

H. naledi's teeth are more like australopithecines and early Homo species rather than later members of the genus Homo.

Genus Australopithecus:

A stratigraphic investigation of the site where Little Foot was discovered was undertaken.

Little Foot has longer than average australopithecine arm bones.

META:

The season changes to savannahs and how it might have impacted hominin diets.

The promise of how protein analysis could change paleoanthropology.

The Sahara Desert dates back, intermittently, to the Pliocene.

The Olduvai Basin gets seismically imaged.

How stone tool techniques could have been acquired.

The hominin ilium is pretty unique.

How many different hominins did our ancestors actually meet?

Saturday, May 11, 2019

Paleolithic Papers #29

Genus Homo:

Rock art from Croatia from circa 34,000 years ago is figurative in nature.

Stone tools were recycled to new uses at a cave in Israel during the late Lower Paleolithic.

Hunter gatherers don't live in 'small' societies.

H. sapiens (Modern Humans):

Brain sizes have shrunk 10% in the last 40,000 years.

There is evidence of starchy food cooked in South Africa during the Mesolithic.

Is this the earliest known footprint from a human in the Americas?

H. neanderthalensis (Neandertals):

The Sima de los Huesas hominins get their age bracketed.

The first Neandertal fossil from Serbia has been found.

Could have aridification helped wipe out the neandertals?

Denisovans:

The Denisovans were two populations, at least, and may have actually been two different species.

A Denisovan jaw bone found in Tibet shows Denisovans colonized the 'roof of the world' long before modern humans did.  The jaw bone also starts to show what the Denisovans looked like.

H. antecessor:

H. antecessor was, at least once, a cannibal.

H. heidelbergensis:

Evidence from reexamining bovid remains from South Africa suggest active hunting was import for H. heidelbergensis.

H. luzonensis:

H. luzonensis, a new hominin from Luzon island of the Philippines, has been discovered. This hominin was another miniature standing at about an estimated 1.2m (5 ft). It may have suffered from island dwarfing like H. floresiensis, the so-called Hobbit.  John Hawks comments.

Hualongdong Hominin:

A hominin from China has a mosaic of primitive and modern features.  Some are claiming this is proof of the multiregional hypothesis.

H. erectus:

Evidence of what mammals H. erectus ate in Italy prior to 1.3 million years ago.

The dispersal routes out of Africa for hominins are explored in Sudan looking for stone tools.  John Hawks comments.

H. naledi:

Cranial remains from the Lesedi Chamber of the Rising Star Cave show some variation from the other fossils, but by and large appear to be more of H. naledi.

H. habilis:

The KNM-ER 64060 fossil mandible appears to be from H. habilis rather than H. erectus.

Genus Australopithecus:

A. sediba:

A sediba does not appear to be ancestral to modern humans.

META:

Man the Runner hypothesis is back again.

A troop of chimps deprived a leopard of its kill: how does that help model early hominins?

The history of human evolution can be seen in your face.

How important was the east african coastal forest for human evolution?

Basal ancestors of Humanity were upright apes.

Plovers Lake paleogenetics data might have been contaminated by modern people.

Saturday, April 06, 2019

Paleolithic Papers #28

Genus Homo:

How did ancient Homo choose places to do its cave paintings?

H. sapiens (modern humans):

Apparently, Late Pleistocene hunter gatherers survived in Iberian ancestry.

Modern humans originated in South Africa and spread through Africa just before migrating out of the continent.

Researchers have found a narrative piece of art from Paleolithic Europe.

A very bold paper claims Australian Aboriginals arrived in Australia 120,000 years ago.

Neandertals:

A commentary is made on the dating of La Quina Amont.

Neandertals might have had adaptations to the cold like wooly mammoths.

Denisovans:

The first pieces of Denisovan skulls have been verified.

Tongzi Hominin:

The Tongzi hominin's teeth are not like H. erectus teeth like had been previously thought.

H. floresiensis (Hobbits):

The environment of Flores at the time of the Hobbit was explored: it was a grassland!  Or so sayeth the rats.

H. erectus:

How big were the groups in Paleolithic India?

H. erectus purposefully started fires on grasslands.  Time to rethink the anthropocene start, folks.

H. naledi:

The root and pulp morphology of a molar for H. naledi gets examined.

Genus Australopithecus:

The brain sizes of A. afarensis and A. africanus are examined.  Did they grow large from eating bone marrow?

Genus Paranthropus:

Dental caries were found in a molar from a P. robustus.

Comparing the metatarsal of Paranthropus to extent hominoids.

META:

The ability to miniaturize stone tools sets hominins apart from other primates.

Did the slowing of the Antarctic current regulate the glaciation cycle?

Green corridors in the Sahara might have facilitated hominin dispersal.

The grandmother hypothesis might explain why women live longer than men.

Why do humans have wisdom teeth that need to be removed?

Unravelling ancient signals of DNA introgression in modern humans.

Saturday, March 16, 2019

Paleolithic Papers #27

Genus Homo:

Scientists are still stumped by the evolution of human breasts.

Hominins in Levant hunted different prey than did the resident hyenas.

H. sapiens:

Pleistocene hunters in Sri Lanka had a taste for monkey meat that lasted a long, long time.

East African hunter gatherers appear to have had a common ancestry.

There are more missing ancestors in our genome other than Neandertals and Denisovans.

Did modern humans self domesticate?

H. neanderthalensis:

Neandertals primary food source was, in fact, meat, at least, at Les Cottés and Grotte du Renne, in France.

What was the impact of the interglacial climate changes on Neandertal diets at Baume Moula-Guercy, Ardèche, France?

The replacement of Neandertals by modern humans was a little more complicated than what used to be thought: there was some, erm, intermingling.

Footprints of Neandertals from Gibraltar have been found.

Some are going hmmm over the stone artifacts at Châtelperronian.

Did inbreeding help do in the Neandertals?

Neandertals walked just like modern people did.

Sima de los Huesos Hominins:

The Middle Pleistocene hominins from Sima de los Huesos had very Neandertal-ish brains.

Denisovans:

Who were they? John Hawks comments.

H. erectus:

Britain may return the iconic Kabwe skull to Zambia.

Genus Paranthropus:

P. robustus:

What was the genetic origin of the pitted enamel hypoplasia in P. robustus?

Genus Aridopithecus:

A. ramidus postcranial remains from Ethiopia get a description.

A. ramidus had adaptations for waling bipedal.

META:

Is the African Eve hypothesis wrong?

Why did menopause evolve?

One paleoanthropologist's hopes for a human evolution museum in Israel.

Human and nonhuman primate brains are compared for clues to human brain evolution.

What were the origins of human language?

The tale of the multiregional hypothesis and the out of africa hypothesis are told.

Can we determine which hominin teeth came from when found?

The current 'gap' in the middle Pleistocene is very important to human evolution.

Root growth for teeth is compared between humans and apes.

Saturday, February 09, 2019

Paleolithic Papers #26

Genus Homo:

How our ancestors survived and adapted 250k years ago.

In the last million years, the mutation rate in the human line has greatly decreased.

Estimating Late middle Pleistocene population sizes.

Hominins may be ecologically unique.

The introgression and hybridization between modern H. sapiens and archaic hominins gets examined.

Ancient DNA from Africa has been starting to be uncovered.

H.  sapiens:

Dogs appear to have been helping hunt as far back as 11,5000 years ago.

Do few tools found mean few people were present?

The seasonal scheduling of shellfish collection from the Mesolithic and more recent are examined.

The oldest dog burial known to date has been found in the Americas dating from the end of the Pleistocene.

Why modern humans evolved different colored skin.

A femur with some unique traits, but probably from anatomically modern humans from the Niah Caves in Malaysia gets examined.

The raw materials used in stone tools in Israel by early H. sapiens is explored.

H. neanderthalensis:

The foot bones of individuals from Montignac-sur-Vézère, Dordogne, France are examined.

The introgression of Neandertals and other archaic hominids had an impact on gene expression in Eurasian populations.

Neandertal spears could be thrown successfully to kill.

Modern humans replaced Neandertals at Bajondillo Cave in Spain 44kya, surprisingly early.

Neandertals introgressing into modern human populations reintroduced alleles that were lost when the ancestors of modern eurasians left africa.

The book, The Smart Neanderthal, gets reviewed.

Neandertals appear to have, in at least a few instances, mass prey killers and then only taken the best parts, leaving the rest.  John Hawks replies.  He also discusses the mass kill site at Gran Dolina, Spain.

Denisovans:

The Denisova Cave in the Altai Mountains was occupied by Denisovans from 192,000 years to almost 52,000 years ago with a period where Neandertals were present.  Stone tools from a hominin date from 300,000 years ago, but it is not clear who made them.  The site was occupied at least until 20,000 years ago.

New unknown hominins:

There appears there is another hominin that modern people recently interbred with.

An archaic hominin from between 150k to 250k years ago had modern tooth eruption.

H. antecessor:

While similar to modern humans in many ways, H. antecessor's were very different.

H. erectus:

It appears Chinese H. erectus populations might have been diverging from Indonesian populations.

Genus Australopithecus:

The era of Australopithecus in South Africa gets a multidisciplinary examination.

Did australopithecines associate with antelope to avoid predators?

A. sediba:

A. sediba is unique species.

A. africanus:

Recently, authors suggested a specimen was of a new species of Australopithecus and resurrected an old name for A. africanus ("A. prometheus").  John Hawks discusses why this won't work.

The long limb bones of StW 573 are studied and discussed..

The bony labyrinth of StW 573 is detailed and what its implications are.

The forearm bones were asymmetrical on StW 573: could that have been a sign of antemortem trauma?

The dental wear of StW 573 was more like A. anamensis than other australopithecines.  Was this evidence it was from a different species than A. africanus?

StW 573's functional anatomy, biomechanical capabilities and potential niche are discussed in light of the new information gathered.

The site where StW 573 was found and its past investigations are detailed.

A. anamensis:

The environment A. anamensis lived in gets examined.

META:

The central place of Africa in human evolution.

Could early hominins crossed water?

How did humans lose their hair and get sweaty?

The importance of human foot muscles to bipedalism.

A new book on the impact of tectonics on human evolution gets reviewed.

Saturday, December 22, 2018

Paleolithic Papers #25

Genus Homo:

Stone tools found in China from the Pleistocene of the Levallois tradition hint at a potential local development of the technology.

A cave painting in Borneo in Indonesia dates from 40,000 years ago.

Inbreeding was common in hominins.

Crossing out of Africa was not difficult because the Arabian peninsula was green.

Hominins were not the cause the megafaunal extinctions in Africa, rather climate and the expansion of the grasslands were.  Unless, of course, the evidence for H. erectus purposefully expanding the grasslands with fire are accurate.

How did human language arise?  We don't really know.

How did members of the genus Homo survive in east Africa from paleolithic to mesolithic?

Analyzing Aurignacian tools using morphometrics.

A Russian site and its dating from the Upper Paleolithic is discussed and explored more.

H. sapiens:

The Lago Santa people had African-like features and were possibly Clovis culture descendants.  The peopling of South and Central America turned out to be fairly complicated.

The peopling of the Americas is getting a lot of interest once more with genetic studies.

Multiple types of projectiles found in Texas hint at potentially multiple migrations into the Americas.  Note: this could also be an example of a transition from one projectile point technology to another.

It seems the dispersals into the AMericas were more complex and hint at an Australasian component.

How did people cross the Wallace Line?

How the environment of northwestern Argentina changed across the Pleistocene/Holocene boundary.

People appear to have inhabited Tibet at least as early as 30,000 years ago.  This is much earlier than previously thought.

Star watching to understand the seasons may have very early origins.  Cave paintings from 40,000 years ago definitely suggest this.

Why do modern humans have round heads?

H. neanderthalensis:

Neandertals were just as violent as modern humans.

Neandertal children suffered from extreme stress during the winter.  Lead exposure was noted.

Neanderthals in the Caucasus transported obsidian over 250 km to make tools with.

Neandertal genes associated with neurogenesis in modern humans have been found.

H. erectus:

Are stone tools of the Acheulean style from 190k to 240k years ago a sign Homo erectus survived in Saudi Arabia until a late date?

H. erectus social behavior is discussed wrt an animal carcass. 

H. habilis:

Oldowon stone tools, the style associated with Homo habilis, have been found in Algeria dating from 2.4 million years ago.

Genus Australopithecus:

Little Foot, a likely A. africanus, is emerging from the stone matrix it was preserved in.

Little Foot's brain endocast suggests a more basal, chimpanzee like brain.

The original studies of A. africanus when it was known as A. prometheus are discussed.

Genus Paranthropus:

The scapular anatomy of P. bosei gets studied.

KNM-ER 47000 appears to be from P. bosei.

META:

U-Pb dating of flowstones from South Africa constrains the dates hominins were evolving there and shows they were living in dry climate conditions.

Trabecular Bone Fraction gets compared between modern humans, hominins and other primates.

The stone tool gripping abilities of modern humans, hominins and apes are compared.

3d analysis of bone tools sheds some light on how they were made and used.

Three plus different hominins coexisted in the early Pleistocene ~2 million years ago in the Omo-Turkana Basin (P. bosei, H.habilis and H. erectus. possibly H. rudolfensis as well).

What was the dietary diversity of early Pleistocene hominins?

The trabecular structure of the distal femur is compared between humans, apes and baboons is compared.

Saturday, November 03, 2018

Paleolithic Papers #24

Genus Homo:

H. sapiens:

A cave in Libya has show evidence of grinding stones used on seeds from the Late Pleistocene, 31 kya.

We know ancient humans believed in an afterlife.

A new bone knife is the oldest specialized artifact from the Aterian culture, 90,000 years ago.

A technological/cultural transition that took place in South Africa was definitely not linked to climate change.

The Friedkin site in Texas has yielded more pre Clovis projectile points from approximately 15.5kya.

Are the reports of H. sapiens outside of Africa ~200kya due to flawed interpretation of the dating data?

Genetic studies of Africa are giving light to ancient human population evolution there during the Pleistocene.

H. neanderthalensis:

A large part of the DNA left to modern humans from interbreeding with Neandertals is related to fighting off viruses.

Neandertals practiced their own form of health care and it was crucial to their survival.

Modeling the disappearance of Neandertals through population dynamics.

A Neandertal child in Poland from 42 kya was eaten by a large bird.

H. antecessor:

Homo antecessor had already evolved Neandertal-type teeth 450,000 years ago.

H. erectus:

The variation in the Acheulean stone tools is examined.

How many different grips were used on the lower Paleolithic hand axes?

META:

Did the ancient climate affect human evolution?

The difference between chimpanzee and human upright walking related to trunk sizes.

A geometric morphometric examination of hominoid third metacarpal shape and its implications for inferring the precursor to terrestrial bipedalism.

Saturday, September 22, 2018

Paleolithic Papers #23

Genus Homo:

The modern human hand was almost certainly around by 500,000 years ago, predating modern humans by 300,000 years.

The deactivation of the Cmah gene two to three million years ago appears to have given hominins a leg up by increasing endurance and improving running speeds.

H. sapiens:

When DID modern humans reach southeast asia and sahul?

The revised timeline of data from the Liang Bua cave may suggest modern humans made it to Flores by 46 kya.

The Levant had a humid period between 44kya and 55 kya.  That may be what helped modern humans disperse out of Africa.

An abstract piece of art appears to have been found in a cave in South Africa dating from 73,000 years ago.

Using ZooMS to understand the bone tools of the twilight of the Pleistocene in North Africa.

Humans actually share better than other primates.

Beer before agriculture.  Maybe.  However, beer dates from the twilight of the Pleistocene in Israel.  If not older.

Neandertals:

The early dates for the Neandertal Art might be wrong.  Some are disputing them.

Could cooking and fire be how modern humans outcompeted Neandertals?

How much did the climate cycles impact the replacement of Neandertals by modern humans in Europe?

Neandertal brains were bigger than modern humans, but not necessarily better.

Denisovans:

Meet Denny.  She is a 13 year old girl who had a Neandertal mother and a Denisovan father.

The cave where Denny came from has given up 4 more bones (not hers).  Dr. John Hawks comments.

Aroeria Hominin:

The bony labyrinth of this hominin appears to be more primitive than in Neandertals.  This could be a new hominin or an example of Homo heidelbergensis.

META:

Evolution of the hominin foot and how it relates to bipedalism.

How DID humans evolve their 'smarts?'

Two to three million years ago, human ancestors had genetic change that improved their running capability.

Saturday, August 11, 2018

Paleolithic Papers #22

Genus Homo:

What restricted hominin living locations in middle Pleistocene China?

Could the evolution of human beings be the root cause of some mental disorders?

H. sapiens:

Discovery of spearheads and other points in Gault, TX indicate a new, previously unknown and unique stone tool tradition that predates the Clovis culture.

The models of how the Americas were populated get a run down.

Modern humans may have arisen from pockets of semi isolated populations in Africa.

Did modern humans dominate the world because we specialized at being generalists?

The modern pygmy population of Flores, Indonesia shows evidence of Denisovan and Neandertal introgression, but not of older hominins.  This (amongst other information) indicates insular dwarfism arose twice on Flores with two different hominin species and the Hobbits are not related to the modern Rampasasa people of Flores.

H. neanderthalensis:

The Krapina Neandertals used their anterior teeth for tasks other than eating based on their tooth fractures.

Neandertals apparently had a different ontogeny went it came to walking.

Some caution is being urged at using microbiota of the mouth as evidence of the interbreeding between modern humans and Neandertals.

Neandertals appear to have fire starting tools.

H. erectus:

Stone tools from China date from 2.1 million years ago, pushing back in time the exit from Africa by 400kya.  The question is which hominin this is.  H. erectus seems the most likely, but that would mean H. erectus is older than we thought.  John Hawks appears to support the idea this is H. erectus and states there is at least one other Chinese site that has similar dates.

There is a pelvis found that is close to modern humans',  but apparently is really from H. erectus given the rest of the skeleton.  It may be the modern human pelvis was part of the normal variation of later H. erectus.

Island dwarfism in canids during the Pleistocene in Java could have implications for H. erectus and the potential evolution of the 'hobbits,' H. floresiensis.

Did...laziness (?!?!) doom H. erectus?

H. habilis:

The use, reuse and creation of tools at the Oldowan technological site HWK EE.

H. naledi:

3 specimens from the Rising Star cave give some insight into the variation in H. naledi.

Genus Australopithecus:

The hominin jaw underwent significant change in the earliest australopithecines.

A. afarensis and A. sediba walked bipedally differently.

The Swartkrans Oldowan site provided some interesting differences between other Oldowan stone tool sites.

META:

A 2 million year long perspective of the hydroclimatic environment of human evolution in Southeast Africa.

Eating bone marrow shaped the evolution of the hominin hand.

Trabecular bone patterning in the human hand hints at changes as to how the hand was used by hominins.