ERTH 2401 Lecture Notes - Lecture 4: Ankylosauridae, Pinacosaurus, Digestion
15 Oct 2018
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Ornithischia: stegosaurs & ankylosaurs: saurs is the group all together, similar time of animal, not a specific latin. Main feature: pelvis similar to bird"s pelvis, process of pubis has rotated backward to lie close to parallel with the ischium, opisthopubic condition. Thyreophora: thyreo shield, phora bearer . Jugal (cheek bone) with broad process behind the eye: parallel rows of dermal armour scutes on the back of the body. Basal thyreophora: scutellosaurus: early jurassic, arizona emausaurus: early jurassic, germany. Scelidosaurus: early jurassic, england: first appearance in the early jurassic in north america, europe, and asia, replaced by their stegosaur and ankylosaur descendants in the middle. Jurassic. (scelidosaurus may actually be the most basal ankylosaur. : has an armour and different plate, distinguish themselves from the arrangement of plates, the circle is the ornithischia. Cretaceous: evolution over large span (60 ma) Paleobiology: early discoveries in england in 1870s, great dinosaur rush at como bluff by.
