Chapter #34- Vertebrates Part 2

Class Reptilia includes

lizards, snakes, turtles, birds, crocs, dinosaurs

Reptilia have

scales for a waterproof barrier, shelled eggs on land

3 orders of Reptilia

lepidosaurs, testudines, crocodylia

Lepidosaurs consists of

squamates-lizards,snakes

Testudines have a shell

made of upper and lower shields that are fused to the vertebrate

Testudines are

turtles, tortoises, terrapins

Crocodylia are

crocodiles and alligators

Class Aves are

birds

what is a major adaptation for the class aves

wings with keratin feathers, lack of a urinary bladder

birds descended from what group of carnivorous dinosaur

small theropods

Oldest bird known

Archaeopteryx

4 Characteristics of Mammals

mammary glands (produce milk), hair, larger brain, differentiated teeth

Monotremes are

egg layering mammals like echidnas, platypus

Marsupials include

kangaroos, opossum, and koalas

placenta

what the embryo develops in inside a mother’s uterus

marsupium

pouch where a marsupial completes its development, nurses

eutherians are

placental animals thats have a longer period of pregnancy

eutherians complete embryonic development within a

uterus that is joined to the mother by the placenta

Proboscidea

elephants

Rodentia

squirrels, beavers, rats, porcupines, mice

Lagomorpha

rabbits, hares, picas

Primates

lemurs, monkeys, chimps, gorilla, humans

Carnivora

dogs, wolves, bears, cats, weasels, seals, otters, walruses

Cetartiodactyla

sheep, pigs, cattle, deer, giraffes

Cetaceans

dolphins, whales

8 Characteristics of Primates

hands, feet, large brain, short jaws, forward looking eyes for depth perception, complex social behavior, parental care, opposable thumb

3 main groups of primates

lemurs, tarsiers, anthropoids

Anthropoids include

monkeys and apes

two types of monkeys

old world and new world

Derived Character of Humans

upright posture/bipedal locomotion, larger brain, language capabilities/symbolic thoughts, manufacture and use complex tools, shorter jaw, shorter digestive track