157 turtles formally known as the testudines these

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Turtles Formally known as the testudines, these includes both turtles & tortoises Dorsal and ventral bony plates form a shell. The dorsal plates are modified ribs 158 Crocodylia Includes crocodiles, alligators, and relatives (caiman and gharials) Carnivorous Build egg nests on land. Females guard the nest, and in some species the female guards and communicates with her offspring as well 159 Aves These are the birds. ~10,000 species Birds are a specialized group of Theropod dinosaurs. The dinosaurs didn’t go extinct, because we have birds Feathers are diagnostic, though they are not a synapomorphy of modern birds Like crocodilians: vocalization & parental care 160
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Mammalia These are the Mammals; ~5700 species Diagnostic features include mammary glands & hair Three groups of mammals: monotremes, marsupials, and eutherians Monotremes include the duck-billed platypus and four species of echidnas (spiny anteaters) (= 5 species, all endemic to Australia. Features include egg laying and no nipples (milk simply oozes out of skin and is licked up). Marsupials carry their young in a pouch (~337 species). Most species in Australia and South America; 1 species in North Am. Eutherians = all other mammals 161 Mammalia These are the Mammals 162 163
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Need to know Amniotes 164 Need to know Primates Great Apes Grasping limbs with opposable thumb 165 Great Apes 23.3 m.y based on fossils Need to know Great Apes Great Ape synapomorphies - enlarged mammary glands - knucklewalking 166
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Chimpanzees Homo sapiens Chimpanzees are most closely related to bonobos, also known as pigmy chimps Chimps are more closely related to humans than to gorillas There are many similarities between humans and chimps... 167 168 The Tree of Life You are here 169
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  • Spring '18
  • MORRIS
  • Sarcopterygii

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