Study: Tooth size not linked to brain size in early humans

Fossil teeth are far more problematic for evolutionists than this study indicated:

Human/Ape Common Ancestry: Following the Evidence - Casey Luskin - June 2011 Excerpt: So the researchers constructed an evolutionary tree based on 129 skull and tooth measurements for living hominoids, including gorillas, chimpanzees, orangutans and humans, and did the same with 62 measurements recorded on Old World monkeys, including baboons, mangabeys and macaques. They also drew upon published molecular phylogenies. At the outset, Wood and Collard assumed the molecular evidence was correct. “There were so many different lines of genetic evidence pointing in one direction,” Collard explains. But no matter how the computer analysis was run, the molecular and morphological trees could not be made to match15 (see figure, below). Collard says this casts grave doubt on the reliability of using morphological evidence to determine the fine details of evolutionary trees for higher primates. “It is saying it is positively misleading,” he says. The abstract of the pair’s paper stated provocatively that “existing phylogenetic hypotheses about human evolution are unlikely to be reliable”.[10] http://www.evolutionnews.org/2011/06/following_the_evidence_where_i047161.html#comment-9266481 Human Origins, and the Real Reasons for Evolutionary Skepticism - Jonathan M. - December 9, 2012 Excerpt: "Cladistic analysis of cranial and dental evidence has been widely used to generate phylogenetic hypotheses about humans and their fossil relatives. However, the reliability of these hypotheses has never been subjected to external validation. To rectify this, we applied internal methods to equivalent evidence from two groups of extant higher primates for whom reliable molecular phylogenies are available, the hominoids and paionins. We found that the phylogenetic hypotheses based on the craniodental data were incompatible with the molecular phylogenies for the groups. Given the robustness of the molecular phylogenies, these results indicate that little confidence can be placed in phylogenies generated solely from higher primate craniodental evidence. The corollary of this is that existing phylogenetic hypotheses about human evolution are unlikely to be reliable." http://www.evolutionnews.org/2012/12/human_origins_a1067181.html No Known Hominin Is Common Ancestor of Neanderthals and Modern Humans, Study Suggests - Oct. 21, 2013 Excerpt: The article, "No known hominin species matches the expected dental morphology of the last common ancestor of Neanderthals and modern humans," relies on fossils of approximately 1,200 molars and premolars from 13 species or types of hominins -- humans and human relatives and ancestors. Fossils from the well-known Atapuerca sites have a crucial role in this research, accounting for more than 15 percent of the complete studied fossil collection.,,, They conclude with high statistical confidence that none of the hominins usually proposed as a common ancestor, such as Homo heidelbergensis, H. erectus and H. antecessor, is a satisfactory match. "None of the species that have been previously suggested as the last common ancestor of Neanderthals and modern humans has a dental morphology that is fully compatible with the expected morphology of this ancestor," Gómez-Robles said. http://www.sciencedaily.com/releases/2013/10/131021153202.htm

supplemental notes:

Skull "Rewrites" Story of Human Evolution -- Again - Casey Luskin - October 22, 2013 Excerpt: "There is a big gap in the fossil record," Zollikofer told NBC News. "I would put a question mark there. Of course it would be nice to say this was the last common ancestor of Neanderthals and us, but we simply don't know." - http://www.evolutionnews.org/2013/10/skull_rewrites_078221.html “A number of hominid crania are known from sites in eastern and southern Africa in the 400- to 200-thousand-year range, but none of them looks like a close antecedent of the anatomically distinctive Homo sapiens…Even allowing for the poor record we have of our close extinct kin, Homo sapiens appears as distinctive and unprecedented…there is certainly no evidence to support the notion that we gradually became who we inherently are over an extended period, in either the physical or the intellectual sense.” Dr. Ian Tattersall: – paleoanthropologist – emeritus curator of the American Museum of Natural History – (Masters of the Planet, 2012) Evolution of the Genus Homo – Annual Review of Earth and Planetary Sciences – Ian Tattersall, Jeffery H. Schwartz, May 2009 Excerpt: “Definition of the genus Homo is almost as fraught as the definition of Homo sapiens. We look at the evidence for “early Homo,” finding little morphological basis for extending our genus to any of the 2.5–1.6-myr-old fossil forms assigned to “early Homo” or Homo habilis/rudolfensis.”,,,, “Unusual though Homo sapiens may be morphologically, it is undoubtedly our remarkable cognitive qualities that most strikingly demarcate us from all other extant species. They are certainly what give us our strong subjective sense of being qualitatively different. And they are all ultimately traceable to our symbolic capacity. Human beings alone, it seems, mentally dissect the world into a multitude of discrete symbols, and combine and recombine those symbols in their minds to produce hypotheses of alternative possibilities. When exactly Homo sapiens acquired this unusual ability is the subject of debate.” http://www.annualreviews.org/doi/abs/10.1146/annurev.earth.031208.100202

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January 12, 2017

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