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Diapsids

CRANIAL KINESIS IN DINOSAURS: INTRACRANIAL JOINTS, PROTRACTOR ...

Major structures associated with cranial kinesis in diapsids. A, schematic of a generalized archosaur indicating hypothesized mobile intracranial joints; B , inset of the skull of the basal sauropod dinosaur Massospondyluscarinatus (BP/1/4779) based on CT data, denoting the plane of section in C in left ...

Assignment Discovery Online Curriculum Lesson title: What's ...

The Web sites listed below provide the information students need to complete the activity. Endothermic General information: http://www.ucmp. berkeley.edu/diapsids/dinosaur.html

Early amniotes

We will study synapsids later. Reptiles include testudines, diapsids (including birds), and all the fossil amniotes more closely related to them than to

hic70049 ch26 563-584

other diapsids is unclear; morphology of the appendicular skel eton suggests affinities with lepidosaurs, but genetic evidence suggests affinities with archosaurs.

GLY1101: Study Guide Nr. 3

Diapsids ("two arches"): are a group of tetrapod animals that developed two holes (temporal fenestra) in each side of their skulls, about 300 million years ago during the late Carboniferous period.

Life in the Mesozoic*

Mesozoic Reptiles* Synapsids* (Mammals) * Anapsids* (Turtles) * Diapsids* Lizards* & Snakes* Crocodiles* Pterosaurs* Marine* Reptiles* Dinosaurs* & Birds* Archosaurs* Archosaurs: Early Diapsids*

Plants, Reptiles and Mammals

They are also interesting in that each group had a major branch that returned to the sea • Six Mesozoic groups of diapsids are (1) Lepidosauromorphs, (2) Sauropterygia, (3) Ichthyosaurs and three groups that descended from archosauromorphs : (4) Crocodilians, (5) Pterosaurs (the flying reptiles) and ...

Reptiles Geology 331 Paleontology

Review of Reptile Groups, all are Amniotes • Anapsids • Synapsids • Diapsids • Euryapsids

Biology 356 - Major Features of Vertebrate Evolution Dr ...

The relationships between Paleozoic and Mesozoic marine reptiles and their terrestrial relatives are difficult to assess, but the taxa discussed in this chapter are now generally considered to be derived from diapsids, probably lepidosauromorphs, with the lower temporal fenestra being without a lower ...

Amphibians, Amniotes, Birds, Reptiles, Mammals

... Birds, Reptiles, Mammals There are 4 main groups of reptiles Turtles Spenodonts Lizards and Snakes Crocodilians-Anapsids-200 Species Characteristic: Keratinized shell-Diapsids *shed skin at regular intervals *flexible skull *Jacobson *s organ *Thousands of species-Diapsids-Primitive forms-2 species-Diapsids-Semi ...