ANT100Y1 Lecture 4: Lecture 4
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ANT100Y1 Full Course Notes
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Document Summary
General patterns of morphology and phylogenetic for fossil primates and hominins. What a hominin is in terms of taxonomy. Morphological trends in hominin evolution: bipedalism, expansion in brain size, changes in dental and cranial scale. Subdivision of the paleogene period according to the ics, as of 2017. Body size- tiny, shrew-sized to size of small dog. Niche: likely solidarity, nocturnal quadrupeds; well developed sense of smell. Used to be classifies as primates because of primate like teeth and limbs that are adapted for arboreal lifestyle. Recent: plesiadapids not primates: no postorbital bar, claws instead of nails, eyes placed on side of head, enlarged incisors (front teeth) Smaller adapids ate mostly fruit and insects, larger forms ate more fruits and leaves. Body size: 100 g to 6900 g. Mainly aroboreal quadrupeds, some were specialized leapers: omomyidae. Body size of 45 g to 2500 g. Teeth: adapted for eating insects and soft fruits, only a few species were leaf-eaters.
