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PELYCOSAURIA [3 records]

Record 1 2000-02-14

English

Subject field(s)
  • Reptiles and Amphibians
CONT

The Pelycosauria were among the very first groups of reptiles to evolve, early in the Late Carboniferous (Pennsylvanian) period. By the end of that period all the major lines of Pelycosaurs except the caesids had appeared. They remained the dominant life-form (the largest, fiercest, etc) for some 40-odd million years, which is about 3/5ths the length of time of the age of mammals.

OBS

Order composed of suborders ophiacodontia, sphenacodontia and edaphesauria.

French

Domaine(s)
  • Reptiles et amphibiens
OBS

Ce sont des formes uniquement permiennes. La présence d'«une fosse temporale» n'empêche pas qu'ils soient encore «très primitifs». Ils ont, en effet, des dents palatines, des vestiges importants de corde dorsale, des humérus et fémurs horizontaux. Par certains genres intermédiaires, les Pélycosauriens passent à des formes plus évoluées qui manifestent des affinités avec les mammifères.

Spanish

Save record 1

Record 2 1980-08-19

English

Subject field(s)
  • Paleontology

French

Domaine(s)
  • Paléontologie

Spanish

Save record 2

Record 3 1978-08-04

English

Subject field(s)
  • Paleontology
OBS

A division of extinct reptiles of the Carboniferous epoch.

French

Domaine(s)
  • Paléontologie
OBS

Groupe de reptiles théromorphes, remarquables par leurs dents différenciées et leurs très longues apophyses épineuses.

Spanish

Save record 3

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