Lepidosaur EVERYTHING Flashcards
anapsid
0 fenestra (turtles)
diapsid
2 fenestrations, sauropsids/truly tuatara
synapsid
1 fenestra (mammals
acrodont dentition
peg-like, fused to jaw (chameleons)
pleurodont dentition
fused to side of jawbone (iguanids)
thecodont dentition
in sockets, archosaurs
solenoglyphy
viperids, retractable, hollow
proteroglyphous
elapids and others, fixed grooved front fangs
opisthoglyphy
many colubrids, rear fanged
aglyphous
no fangs, many boas
keeled scales
look spiky
beaded scales
look like beads - chameleons, beaded lizards
osteoderms
bony deposits (only heloderma)
sphenodontidae
family of tuatara. pineal eye, diapsid skull, low kinesis
scincidae
family in squamata. small limbs, short neck, smooth scales, MANY limb losses.