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Eumeces Obsoletus
SKINKS
No lines on body
Eumeces Tetragammus
SKINKS
Light stripe above eye
Scincella Lateralis
SKINKS
No light stripe
Cnemidophorus Sexlineatus
STRIPED
WHIPTAILS
No spots and
granular scales
on back forelimbs
Cnemidophorus Laredoensis
STRIPED
WHIPTAILS
Moderately enlarged
forelimb scales & white,
tan, or green tail
Cnemidophorus Gularis
STRIPED
WHIPTAILS
Extremely enlarged
forelimb scales &
reddish/pinkish tail
Anolis Carolinensis
ANOLES
Primarily green
Elongated snout in line
that taper evenly with
rest of skull
Anolis Sagrei
ANOLES Brown anoles
Hemidactylus Turcicus
GECKOS
Bumpy skin,
no eyelids
Coleonyx Brevis
GECKOS
Striped skin,
eyelids
Crotaphytus Reticulatus
SMOOTH SKINNED
LIZARDS External ear openings
& dark spots on back
Cophosaurus Texanus
SMOOTH SKINNED
LIZARDS Black bars on ventral
side of tail
Holbrookia Propinqua
SMOOTH SKINNED
LIZARDS Tail length longer
than body length,
no ventral spots on
tail
Holbrookia Lacerta
SMOOTH SKINNED
LIZARDS Tail with ventral spots
Ctenosaura Pectinata
SPINY LIZARDS
Low crest of scales
down the back
(in Brownsville)
Phrynosoma Cornutum
SPINY LIZARDS
Large spines on head
Urosaurus Ornatus
SPINY LIZARDS
A fold across throat
Sceloporus Serrifer
SPINY LIZARDS
Distinct collar
Sceloporus Variabilis
SPINY LIZARDS
Pocket behind
hindlimbs
Sceloporus Grammicus
SPINY LIZARDS
Wavy lines on back,
no stripe on side
Sceloporus Undulatus
SPINY LIZARDS
Clearly defined light
stripe on side
Sceloporus Olivaceus
SPINY LIZARDS
Light stripe not
clearly defined
Ophisaurus Attenuatus
LEGLESS LIZARDS
Moveable eyelids
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