Homo erectus is a prehistoric human species that has been considered to include direct ancestors of modern Homo sapiens.
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definition
Taxonomic characterization of an ancient human species often cited in discussions of human ancestry
A large, squat braincase and a projecting (jutting) lower jaw are morphological characteristics commonly associated with Homo erectus skulls.
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morphological
Descriptive cranial features used in comparative classification of archaic human fossils
Denisovans are an archaic human group that coexisted with ancestors of modern humans.
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classification
General characterization of Denisovans in relation to other hominin groups