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pelycosaur
 

Definitions from WordNet

Noun pelycosaur has 1 sense
  1. pelycosaur - large primitive reptile having a tall spinal sail; of the Permian or late Paleozoic in Europe and North America
    --1 is a kind of     synapsid, synapsid reptile
    --1 is a member of Pelycosauria, order Pelycosauria

Definitions from the Web

Pelycosaur

Definition: Pelycosaurs are an extinct group of reptiles that lived from the late Carboniferous period to the early Permian period. They were among the first group of reptiles to evolve characteristics similar to mammals.

Noun:

  1. A member of the group Pelycosauria.
  2. Any of the extinct reptiles belonging to the order Pelycosauria.

Example Sentences:

  1. The pelycosaur is known for its distinctive sail-like structure on its back.
  2. Fossils of pelycosaurs have provided valuable information about the evolution of reptiles.

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