34 terms

Comparative Anatomy Taxonomy

Class Agnatha
without jaws, lack paired appendages
order ostracodermi
first known vertebrates, paleozoic, bony plates in dermis
order cyclostomata
hagfish and lamprey, cartilage skeleton, adults parasitic
class placodermi
paleozoic, bony plates in dermis, jaws present, paired appendages
class chondrichthyes
paleozoic, cartilage skeleton, skarkes, skates, and rays
class osteichthyes
most numerous of fishes, bone skeleton, operculum on gill chamber
group crossopterygii
lobe fin fish, skeleton of fin like tetrapod, latimeria
group dipnoi
class amphibia
double life, end of paleozoic
order caudata
order anura
frogs and toads
order apoda
worm-like amphibians, lack limbs, caecilians
class reptilia
first amniotes, cleidoic egg, late paleozic,
order chelonia
order rhynchocephalia
sphenodon, parapineal eye
order squamata
snakes and lizards
order crocodilia
crocodile, alligators, caymans
class aves
subclass archaeornithes
subclass neornithes
modern birds, homeothermal, developed sternum
class mammalia
hair, mammary glands, sweat glands, mesozoic
order monotremata
egg-laying mammals, platypus, spiny anteater, lack nipples, cloaca
order marsupialia
pouched mammals, kangaroo
order insectivora
start of placentals, moles and shrews
order chiroptera
flying mammals, bats
order primates
well developed brain, opposable thumb, monkies, apes, man
order carnivora
meat eaters, well developed canine teeth, dog, cat
order rodentia
rodents, incisors, rats, mice, squirrels
order lagomorpha
rabbits, hares, split upper lip
order catacea
whales, dolphins
order perissodactyla
odd toed ungulates, horse, rhino
order artiodactyla
even toed ungulates, cattle, pigs, sheep
order edentata
order proboscidia