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Herp vocab 1

General Anatomy of Salamanders Four robust limbs; Anatomy and locomotion similar to ancestral state; common Paedomorphism; Cutaneous gas exchange; Mostly small
General Location of Salamanders Salamanders North to Central America
Plethodontids Lack lungs so entirely cutaneous; Small, long, and thin; Terrestrial; Ballistic tongue with skeletal elements from hyobrachial apparatus from ancestral gill arches
Reproduction Spermatophores to be picked up by female cloacas; Eggs are laid in water or on moist land; Viviparous young have long gestations and eat unfertilized eggs in the womb
Paedomorphosis also called neoteny A condition in which some species of salamanders don't metamorphose, but remain permanent larvae
Eft Juvenile stage of a salamander
Thecodont Having teeth that are set in sockets in the bone
nictitating membrane which is a transparent, movable membrane that covers the eyes allowing them to see with their 'eyelids'
Pleurodont Having teeth that are supported by a shelf of bone along the side of the teeth
Jacobson's organ extra sense organ in the roof of the mouth of reptiles. -used to detect scents in the air.
Fenestra Holes in the skull structure
Synapsids Have one hole in their skull on each side of the skull
Diapsids Have two holes in their skull on each side of the skull
Anapsids Have no holes in the skull on either side of the skull
Acrodont Having teeth that are fused to the outer surface of the bones that form the margin of the jaw
Urostlye bone formed from fused vertebrae at the base of the vertebral column - found in frogs and toads.
Adductor Magnus helps bring hind limbs to the body to help frogs jump
parthenogenesis asexual reproduction
TSD temperature dependent sex determination
ESD environmental sex determination
Diapause: delay in development in response to regular and recurring periods of adverse environmental conditions
Vespertine Active during evening
Crepuscular active at dawn and dusk
Created by: turtlehouse
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