synapsida

不可数 · 专有名词

A taxonomic group of extinct reptiles that lived from the Permian to the Jurassic period, considered to be the ancestors of mammals.

• 🇨🇳Synapsida 是一类已灭绝的羊膜动物，生存于石炭纪至白垩纪，是哺乳动物的直系祖先，以其头骨后部每侧各有一个颞颥孔为特征。

1. Extinct Reptilian Group C2 formal scientific

   An extinct group of reptiles that lived from the Permian to the Jurassic periods and are considered the ancestors of mammals.

   • Synapsida includes the pelycosaurs and therapsids, which are key to understanding mammalian evolution.
   • Fossils of Synapsida have been found in many parts of the world.
   • The transition from Synapsida to early mammals is a major topic in paleontology.

   🇨🇳已灭绝的爬行动物类群

• synapsids plural form
• synapsids' possessive plural form
• synapsida's possessive singular form