Eocarcinus
| Eocarcinus |
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|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Subphylum: | |
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| Family: |
Eocarcinidae
Withers, 1932
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| Genus: |
Eocarcinus
Withers, 1932
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| Species: |
E. praecursor
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| Binomial name | |
| Eocarcinus praecursor Withers, 1932
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Eocarcinus praecursor is a Jurassic species of decapod crustacean, sufficiently distinct from its relatives to be placed in its own family (Eocarcinidae).[1] Once considered the oldest true crab, it is now considered to be an early member of the Anomura.
Distribution
It lived during the Pliensbachian age (Lower Jurassic),[2] and has been found in rocks at two sites in the United Kingdom – Mickelton Tunnel (near Aston Magna), Gloucestershire and Runswick Bay, Yorkshire.[3]
Description
In many of its characters, it represents a transitional stage between the Glypheoidea and the Middle Jurassic crabs in the Prosopidae.[2] Since its ancestors were long-tailed decapods, and its successors were short-tailed crabs, Eocarcinus has been described as "the lobster who decided to become a crab".[4] Previously considered to be the oldest known true crab, a 2010 revision concluded that Eocarcinus could not be accommodated among the Brachyura, and was instead transferred to the Anomura.[5]
References
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- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found. JSTOR: 1st page, 2nd page
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
