Palaeocambarus
| Palaeocambarus Temporal range: Early Cretaceous, | |
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| Specimen from the Yixian Formation of China | |
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| Genus: | †Palaeocambarus Taylor, Schram & Shen, 1999 |
| Species: | †P. licenti |
| Binomial name | |
| †Palaeocambarus licenti (Van Straelen, 1928) | |
| Type species | |
| Astacus licenti Van Straelen, 1928 | |
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Palaeocambarus is an extinct genus of crayfish discovered in the Yixian Formation in China, with only a single species, Palaeocambarus licenti. It is one of the oldest known fossil crayfish.
The genus Cricoidoscelosus is now considered to be a junior synonym. It was initially believed to be Late Jurassic (Tithonian) in age, but it is now confirmed to have been Early Cretaceous (Barremian-Aptian) in age.