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| Colymbosathon | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Ostracoda |
| Order: | Myodocopida |
| Family: | Cylindroleberididae |
| Genus: | †Colymbosathon |
| Species: | †C. ecplecticos |
| Binomial name | |
| †Colymbosathon ecplecticos Siveter et al., 2003 | |
Colymbosathon ecplecticos is a fossil ostracod described from a specimen obtained from Herefordshire which is dated to the Silurian (425 Ma). It was given a binomial name in 2003 and is the only species within the genus Colymbosathon. The generic name is from Greek Kolymbos (swimmer) and sathon (having a large penis) while the species epithet is from ekplektikos meaning "astounding".
Imaging and virtual reconstruction of the fossil showed that the soft parts were well-preserved. The specimen was placed in the Cylindroleberididiae. The bivalved carapace is about 5210 μm long. The specimen, a male, was found to have a large copulatory organ. The find was popularized as being the oldest known penis. It has the oldest known gills among fossil ostracods.
References
- Mckee, Maggie (5 December 2003). "Fossilised crustacean boasts oldest penis". New Scientist. Retrieved 2024-12-20.
- Siveter, David J.; Sutton, Mark D.; Briggs, Derek E. G.; Siveter, Derek J. (2003-12-05). "An Ostracode Crustacean with Soft Parts from the Lower Silurian". Science. 302 (5651): 1749–1751. doi:10.1126/science.1091376. ISSN 0036-8075.
| Taxon identifiers | |
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| Colymbosathon | |