bn:03276458n
Noun Concept
Categories: Extant Pennsylvanian first appearances, Transitional fossils, Sphenacodonts
EN
Sphenacodontoidea  sphenacodontoid  sphenacodontoids
EN
Sphenacodontoidea is a node-based clade that is defined to include the most recent common ancestor of Sphenacodontidae and Therapsida and its descendants. Wikipedia
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EN
Sphenacodontoidea is a node-based clade that is defined to include the most recent common ancestor of Sphenacodontidae and Therapsida and its descendants. Wikipedia
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