misc reptile flashcards

what type of skull do turtles have

anapsid

what type of skull do squamatas have

diapsid

what type of skull do crocs have

diapsid

why are tuatara not lizards/ other important chara.

native to new zealand

nocturnal

no external ears

exist in cooler weather

what groups squamata together?

hemipenis

Bodies covered with scales

Diapsid skull

Leglessness independently evolved many

times

what groups serpentes together?

Limbless (vestigial limbs in some)

No movable eyelids

No external ear

Short tail (post cloaca)

what groups Amphisbaenia together?

Derived squamate body plan

Reptile version of caecilians

Limbs absent reduced

No external ear

what groups turtles together?

hard shell of fused dermal

elements, ribs, and vertebrae that houses portions of the pectoral girdle and entirely encases the body

Teeth are entirely absent replaced by a keratinous beak.

Anapsid skull condition

what groups crocdilia together?

Elongate head and body (armored)

Laterally compressed tail

Bony, hard secondary palate

Diaphragm-like separation of pectoral and abdominal cavities

Well-developed alveoli in lungs

Four-chambered heart

Diapsid skull

what groups lepidosauria together?

a transverse cloacal slit

regular skin shedding in which the outer layers of the epidermis are shed simultaneously over the entire body

the development of breakage planes in the tail that allow for tail autotomy.

what does jacobson’s organ do?

chemosensory, “smell with tongue”

what is the purpose of an egg tooth

help break out of egg on own

how does Eublepharidae differ from Gekkonidae?

moveable eyelids, lack of adhesive toe pads

what is an example of fangless?

pythonidae

what is an example of rear-fanged?

colubridae

what is an example of fixed fanged?

elapidae

what is an example of folding fangs?

viperidae

why does leglessness evolve

adaption to a burrowing life style

what family has tail spines

leptotyphlopidae

chara of subfamily Viperinae?

stout body

lacks heat pit and rattle

how to tell a croc mouth from an alligator mouth

croc teeth overlap mouth, in alligator mouth teeth are even and fit together

what groups cryptodira together?

head can be hidden directly inside shell

what groups pleurodira together?

head needs to be brought to the side to be inside of shell

how to tell pythons from boas?

pythons have divided scales on the tail, range of pythons not in Americas