ANTH 011 Lecture Notes - Lecture 31: Platypus, Metatheria, Petrous Part Of The Temporal Bone
23 Dec 2020
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Document Summary
As our closest living kin, nonhuman primates share w/ us a recent ancestry. Studying nonhuman primates offers us a window into our own evolutionary past. 5-10 million species of animals and plants inhabit earth today, of which 4,000 are mammals. Mammals divided into 3 groups: metatheria- reproduce w/out use of a placenta (marsupials) The monotremes; only living species are australian platypus and echidna. Considered the placental mammals; reproduce by means of internal fertilization, followed by implantation of the fertilized zygote on the wall of the uterus. 250 species of nonhuman primates currently recognized; more than 350 taxa- varieties. What is a primate?- mammals w/ grasping hands, large brains, a high degree of learned rather than innate behavior. Divided into 2 suborders: developed by st. hilaire. Strepsirhini or strepsirhine- includes prosimians (lemurs, lorises, and galagos); excluding the tarsier. Haplorhini or haplorhine- includes anthropoids and the tarsier. Prosimian- members of the primate suborder prosimii that includes the lemurs, lorises, galagos, and tarsiers.
