what are the 3 subphylum?
1) Urochordata
2) cephalochordata
3) Verterbrata
what are in the subphylum Urochordata?
tunicates and sea squirts
describe a feature of the urochordates
enclosed in a sac like tunic with incurrent and excurrent siphons
what is the in the subphylum cephalochordata and describe their appearance?
amphioxus and lancelets - leaf-like or spear-like
what group and clade are hagfish in?
clade - craniate
group - myxinoidea
what group and clade are lampreys in?
clade - vertebrata
group - petroyzontoidea
what group and clade are sharks and dogfish in
clade- gnathostomata
group - Chondrichthyes
what clade and group are ray finned fishes in?
clade- Osteichthyes
group - Actinopterygiii
what clade and group are coelacanths in?
clade - sarcopterygia
group - actinistia
what clade and group are lungfishes in?
clade- choanates
group - dipnoi
what clade and group are frogs in?
clade - tetrapoda
group - Anura
what clade and group are salamanders in?
clade- tetrapoda
group - urodela
what clade and group are caecilians in?
clade- tetrapoda
group - gymnophiona
what clade and group are turtles in?
clade - sauropsida
group - anapsida
what are the 4 sub groups of the group diapsida?
1) lepidosauromorpha - ichthyosaursus fossil
2) lepidosauria - lizards and snakes
3) crocodilia
4) aves
what are the 3 groups within the clade mammalia?
1) monotremes
2) marsupials
3) placentals
2 examples of monotremes
1) echidna
2) platypus
2 examples of marsupials
1) Tasmanian devil
2) marsupial mole
