macrofossils

Question 1

oldest craniates
body is covered w/ bony dermal armor
pairs of side flaps

Answer 1

ostracodermi

Question 2

primitive vertebrates
bottom dwellers
no backbone
scavengers

Answer 2

myxini

Question 3

filter feeders

large, rounded mouth and by single nostril

Answer 3

cephalaspidomorphi

Question 4

no scales
eel-like
jawless
no backbone
unpaired fins

Answer 4

agnatha

Question 5

jawed
paired nostril
paired fins and limbs

Answer 5

gnasthosmata

Question 6

oldest non-armored jawed fish, distinguished by bony spines projecting infront of their fins

Answer 6

acanthodians

Question 7

plate-skinned fishes

Answer 7

placoderms

Question 8

cartilaginous fishes

Answer 8

chondrichthyes

Question 9

fishes with bony skeletons, play a major role in the veolution of tetrapods

Answer 9

ostiechthyes

Question 10

diamond-shaped scales

Answer 10

arheoteryginians

Question 11

lobe fin - direct ancestors of amphibians

Answer 11

sarcopterygians

Question 12

fish-like amphibians

limbs likely used ofr paddling

Answer 12

achantostega

Question 13

amphibians with lungs
limbs used for navigating
tail for balance
skeletal structure

Answer 13

icthyostega

Question 14

small giant tetrapods, abundant in carboniferous

Answer 14

temnospondylous ampphibians

Question 15

small lizard

Answer 15

microsauria

Question 16

elongate body
diminutive limbs
fenestrated skulls

Answer 16

lysorophia

Question 17

earliest known proto-reptile

Answer 17

westlothiana

Question 18

earliest know bird (160 mya jurassic)

Answer 18

aurornis xui

Question 19

toothed bird

Answer 19

hesperonithiformes

Question 20

toothed birds and divers

Answer 20

grebes, penguins, pelicans

Question 21

water birds

Answer 21

charadriformes

Question 22

mammals that give birth the young

Answer 22

eutheria

Question 23

hoofed mammals

Answer 23

artiodactyla

Question 24

mea-eating mammals

Answer 24

carnivora

Question 25

carnivorous and finned

Answer 25

cetacea

Question 26

egg laying mammals

Answer 26

prototheria

Question 27

most primitive mammals, lays eggs

Answer 27

monotremata