Chapter 11: Images for lectures
P. 139. Diapsids
UC Berkeley's Introduction to the diapsids
Tree of Life guide to the diapsids. Updated 2011.
Heleosaurus was terrestrial, Hovasaurus was aquatic, and Coelurosauravus was a glider.
Lepidosauromorphs from the Tree of Life site.
Squamata are the numerous and diverse smaller living reptiles, including lizards and snakes.
Sphenodontia are a sister group of the Squamata but include only one family with one living form, the tuatara Sphenodon.
Here is UC Berkeley's Introduction to the diapsid archosauromorphs
Archosauria are conveniently divided into four groups.
Thecodonts; Crocodylia; Dinosauria; and Pterosauria.
Some early diapsid reptiles are not properly understood, including Mesosaurus, a strange little Permian fish-eating reptile that was the earliest amniote to reach the southern continents.
The Triassic Diapsid Takeover
Respiration, Metabolism, and Locomotion
The Komodo dragon
The giant varanid lizard, the ora or Komodo dragon: at the American Museum of Natural History. More stories:
Euparkeria could have been the ancestor of both pterosaurs and dinosaurs later in the Triassic.
Here is a dynamic image of the anatomy and posture of Euparkeria
The first dinosaurs may have appeared right at the Middle/Upper Triassic boundary:
Story from BBC News OnLine, Thursday, October 21, 1999.
Press release: these are Middle to Late Triassic, from Madagascar, very slightly older than than the Argentine ones, perhaps 230 Ma. We are not talking scientific breakthrough here. 22 October 1999.
The reference list for Chapter 11
Page last updated April 7, 2013
Links last checked March 16, 2013.
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