chordates species

Question 1

heterocercal

Answer 1

split tail w more vertebrae

Question 2

homocercal

Answer 2

rounder tail

Question 3

subphylum urochordata

Answer 3

tunicates and sea squirts

Question 4

subphylum cephalopchordata

Answer 4

lancelets

Question 5

subphylum craniata

Answer 5

everything else with a brain case

Question 6

class myxini

Answer 6

hagfishes

Question 7

class petromyzontida

Answer 7

lampreys, marine ectoparasites, 7 gill slits

Question 8

Class Chondrichthyes

Answer 8

sharks, skates, rays, chimeras (cartilagenous fishes)

Question 9

actinopterygii

Answer 9

ray-finned fishes, bony fishes

Question 10

Clade Sarcopterygii

Answer 10

Lobed finned fishes
Muscular lobed fins

Question 11

Subclass Actinistia

Answer 11

Coelacanths
Only one extant group, thought to be extinct but rediscovered in 1938 in East Africa

Question 12

Subclass Dipnoi

Answer 12

Lungfish
Freshwater fishes found in Africa, SA, and America
Some are obligate air breathers
Two lungs and no swim bladder

Question 13

clade tetropoda

Answer 13

four limbed, agonistic muscle pairs, thermal adaptations, adapted skeleton