Tripoblastic - Deuterostomes - Chordata - Reptilia Flashcards
Reptiles don’t have feathers or hair but
Scales
Endothermic or ectothermic?
Endothermic
Lungs ventilated by
chest movement
How many heart chambers
3 or 4
Amniotic egg laid where?
on land, often in burrow
Reptiles are a paraphyletic group which means
They do not include all descendants of their most recent common ancestor
Most reptiles jaw muscles are protected by what?
outside cranium (brain box) and there are indentations into cranium
‘Anapsid’
No arch
Jaw movements can squeeze what?
Brain
Modern turtles have short jaws and
Toothless beaks
‘Synapsid’
single arch: modern mammals
‘Diapsid’
two arches: modern lizards, snakes and crocodiles
(Reptile order) What are testudines?
Turtles, terrapins and tortoises
What forms testudine shells?
Dorsal and ventral plats - bones on inside and scales on outside
Unlike snakes, testudine skin…
is moulted continually