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The integument, or body covering, of Psittacosaurus is known from a Chinese specimen, SMF R 4970, which most likely comes from the Yixian Formation of Liaoning Province, China. The specimen, which is not yet assigned to any particular species, was likely illegally exported from China and was purchased in 2001 by the Senckenberg Museum in Germany .
An adult salamander generally resembles a small lizard, having a basal tetrapod body form with a cylindrical trunk, four limbs, and a long tail. Except in the family Salamandridae, the head, body, and tail have a number of vertical depressions in the surface which run from the mid-dorsal region to the ventral area and are known as costal ...
Jaeger assumed the big tooth (a snout fang about 10.4 cm (4.1 in) long as preserved) belonged to a giant reptile and that the indented missing tip was a distinctive natural feature that, when viewed from above, resembled a nipple or teat with a small hole in the middle, which he expressed in the name Mastodonsaurus or "teat tooth lizard" (from ...
The tall skull and round teeth of a Nile monitor Skull anatomy of Varanus exanthematicus (2nd row on the left) compared with other Varanoids White-throated monitor Nile monitor The genus Varanus is believed to have originated in South Asia , and the anatomy of its earliest members are thought to resemble modern members of Empagusia , such as ...
Lizard is the common name used for all squamate reptiles other than snakes (and to a lesser extent amphisbaenians), encompassing over 7,000 species, [1] ranging across all continents except Antarctica, as well as most oceanic island chains.
An invasive type of lizard the size of a dog has been spotted in parts of South Carolina. Here’s where and what to know about the creature. ... They have the ability to raise their body ...
A notable feature of Tiktaalik is the absence of bones covering the gills. These bones would otherwise connect the shoulder girdle with skull, making the shoulder girdle part of the skull. With the loss of the gill-covering bones, the shoulder girdle is separated from the skull, connected to the torso by muscle and other soft-tissue connections.
This contrast with the pleurodont condition found in the vast majority of lizards, where the teeth are attached to the inward-facing surface of the jaw. The teeth of the tuatara are extensively fused to the jawbone, making the boundary between the tooth and jaw difficult to discern, and the teeth lack roots and are not replaced during the ...