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Amniotic egg

egg composed of shell and membranes that create a protected environment in which the embryo can develop out of the water

chorion

outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals)

amnion

thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)

allantois

vascular fetal membrane that develops from the hindgut in embryonic higher vertebrates (reptiles, birds and mammals)

albumin

a simple water-soluble protein found in many animal tissues and liquids

keratin

a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair feathers nails and hooves

testudines

tortoises and turtles

carapace

shell covering the back (of a turtle, tortoise, crab, etc.)

plastron

(zoology) the part of a turtle's shell forming its underside

sauria

true lizards

serpentes

snakes

crocodilia

crocodiles and alligators

vertical fracture plane

...

torpor

inactivity resulting from torpidity and lack of vigor or energy

hibernacula

solitary individuals come together to prevent heat loss

spectacle

an elaborate and remarkable display on a lavish scale

Jacobson's organ

Sense organ on snake's roof of mouth which detects airborne chemicals

pit organs

A sensory organ between the eye and nostrils

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