Dynamics of Dinosaurs

Exam 1

amniote

Group of four-limbed vertebrates (tetrapods) that evolved from amphibian ancestors

anapsid

Group of reptiles with no temporal fenestrae

parareptiles

small, lizard-like, carnivorous. Most had anapsid skulls

paraiasaurs

large heavily armored herbivorous parareptiles

synapsids

diverse group of vertebrates that includes all mammals. Has 1 temporal fenestration behind each eye

Therapsids

synapsid amniotes with more upright posture, enlarged temporal fenestra, differentiated teeth, and a larger jaw.

Dicynodonts

type of herbivorous therapsid. Had large tusks that looked like a beak

cynodonts

group of therapsids that had mammalian traits

Diapsids

lineage with two temporal fenestrae behind each eye

crurotarsi archosaurs

archosaur clade that includes crocodilians. They have a flexible ankle joint

crocodilians

Only living species of archosauria clade.

ornithodire archosaurs

branch of archosaurs that includes dinosaurs. They have the primitive ankle joint

ornithischian

highly derived skulls, teeth are far back, pubis stuck out in the same direction as the ischium

saurischian

had ancestral looking skulls, teeth toward front of jaw, pubis points forward, distal carpal V lost

Thyreophorans

Type of ornithischian

Ornithopods

Type of ornithischian

Marginocephalians

type of ornithischian

Coelophysis

Therapod

Sinosauropteryx

Therapod

caihong juji

Therapod

Sauropodomorph

lineage of saurischian