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Temporal range: Upper Jurassic
Scientific classification
Kingdom: Animalia
Subphylum: Vertebrata
Class: Synapsida
(unranked): Mammaliaformes
Order: Docodonta
Family: Docodontidae
Genus: Castorocauda
Ji et al., 2006
  • C. lutrasimilis Ji et al., 2006 (type)

Castorocauda was a genus of small, semi-aquatic relative of mammals which lived in the Jurassic period, around 154 million years ago.

Its fossil was found in lakebed sediments of the Daohugou Beds of Inner Mongolia. Castorocauda] was highly specialized, with adaptations like those of modern semi-aquatic mammals such as beavers, otters, and the platypus (convergent evolution). It also had traces of fur.[1]

Castorocauda] is one of the near-mammals in a group called the Docodonta.[1]

References[change | change source]