pets and animals pic

Reptiles Guide

Nothosaur

From Wikipedia the free encyclopedia, by MultiMedia

Home
| Up
| Next


Nothosaurs
 
Fossil range: Triassic
 
Scientific classification
Kingdom: Animalia
 
Phylum: Chordata
 
Class: Sauropsida
 
Superorder: Sauropterygia
 
Order: Nothosauria
Baur, 1889
Suborders

Nothosaurs (order Nothosauria) were Triassic marine sauropterygian reptiles that may have lived like seals of today, catching food in water but coming ashore on rocks and beaches. They averaged about three meters in length, with a long body and tail. The feet had become paddle-like, and were most certainly webbed in life, to help power the animal when swimming. The neck was quite long, and the head was elongate and flattened, and relatively small in relation to the body. The margins of the long jaws were equipped with numerous sharp outward-pointing teeth, indicating a diet of fish.

The nothosaurs consist of two suborders--the Pachypleurosaurs, tiny, primitive forms, and the true Nothosaurs, which evolved from pachypleurosaurs. Nothosaur-like reptiles were in turn ancestral to the more completely marine plesiosaurs, which replaced them at the end of the Triassic period.

References

  • Fantastic Facts About Dinosaurs (ISBN 0-75253-166-2)
  • Benton, M. J. (2004), Vertebrate Paleontology, 3rd ed. Blackwell Science Ltd classification
  • Colbert, E. H., (1969), Evolution of the Vertebrates, John Wiley & Sons Inc (2nd ed.)
  • Rieppel, O., (2000), Sauropterygia I, placodontia, pachypleurosauria, nothosauroidea, pistosauroidea: In: Handbuch der Palaoherpetologie, part 12A, 134pp. Verlag Dr. Friedrich Pfeil Table of contents

Home
| Up
| Nothosaur
| Pachypleurosaur
| Placodont
| Plesiosaur
| Plesiosauria
| Plesiosaurus
| Pliosaur

Reptiles Guide, made by MultiMedia | Free content and software

This guide is licensed under the GNU Free Documentation License. It uses material from the Wikipedia.

Recommend This Page To A Friend!


Copyright © 2010 Pets Animals Lover Information World - Trademark of Relationships Unlimited, LLC