It is important to continue morphometry analyses on different species and cranial elements for a more comprehensive guide to identify fossil squamates
The epidermis of squamates
is composed of a series of discrete layers, the outermost of which is one cell layer thick and rich in beta keratin (Irish et ah, 1988; Maderson et ah, 1998).
The main recognized groups are fishes, turtles, squamates
, crocodilians, and non-avian dinosaurs.
Amphisbaenians, or worm lizards, constitute a monophyletic group of highly specialized fossorial squamates
with approximately 200 species (Pinna et al.
, especially snakes, coil for many functional purposes including resting, feeding, defense, estivation, and hibernation (Roth, 2003; Heatwole et al.
Pyron had previously analyzed an evolutionary tree containing all groups of squamates
, the group that comprises lizards and snakes.
Live bearing in Cretaceous marine lizards: first fossil record of viviparity in squamates
1995): Amphibians and squamates
from the Maastrichtian of Naskal, India.
It is widely assumed that there is a functional relationship in squamates
between flicking of the tongue and delivery of chemical cues to the vomeronasal system (VNS; see Young, 1993), Electrophysiological data have demonstrated a close temporal correlation between the activity pattern of the tongue retractor system and stimulation of the sensory receptors in the vomeronasal organs (VNO; Meredith & Burghardt, 1978).
1758 Red-eared slider Trachemys scripta Schoepff, 1792 Squamates
Five-lined skink Eumeces fasciata L.
1972; Stewart and Daniel, 1975) and in ontogenetic and/or evolutionary studies of squamates
(Peterson, 1985; Harvery 1993; Harvery and Gutberlet Jr, 1995).
The exhibition examines many aspects of squamates
, including differences in hunting techniques.