There has been little morphological evidence offered since Darwin in support of the relatedness of humans and one or both of the African apes, but th… - Jeffrey H. Schwartz
" "There has been little morphological evidence offered since Darwin in support of the relatedness of humans and one or both of the African apes, but that, when the relationships among the extant humanoids are investigated cladistically in an evaluation of more than 200 morphological features, there are well over twice as many morphological synapomorphies in support of uniting humans with the orang-utan as with the African ape clad and very few in support of uniting the chimpanzee more closely with humans than with the gorilla.
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About Jeffrey H. Schwartz
Jeffrey Hugh Schwartz (born March 6, 1948) is an American physical anthropologist and professor of biological anthropology at the University of Pittsburgh in Pittsburgh, Pennsylvania, and a fellow and President of the World Academy of Art and Science (WAAS) from 2008 to 2012. Schwartz' research involves the methods, theories, and philosophies in evolutionary biology, including the origins and diversification of primates. He has studied and analyzed human and primate skeletons and archaeological remains, focusing much of his research on dentofacial morphology. He has done substantial fieldwork and museum research in the collections of major museums around the globe.
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Jeffrey Hugh Schwartz
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The corpses of water-dwelling animals often sink to the bottom and become covered with sediment. The sediment tends to protect the dead body and even at times retain an impression of its shape and external anatomical details. This environment then provides the means by which the bones of the skeleton are mineralized. ...most land animals die and fall to the ground, without any chance of a freak flood casting them into an environment more favorable to fossilization.
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If Walter Garstang's suggestion is correct, and chordates did arise from a tunicate-like form by retaining the chordate features of their larval stage of development into adulthood, then the first chordates must have been affected by a regulatory mutation that kept the Manx gene activated for a longer period of time.
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