Named By: D. M. S. Watson - 1926.
Classification: Chordata, Amphibia, Reptiliomorpha, Anthracosauria, Embolomeri, Eogyrinidae.
Species: E. attheyi (type).
Size: Roughly up to about 4.5 meters long.
Known locations: England, Northumberland. Scotland, Lanarkshire.
Time period: Carboniferous.
Fossil representation: Skull and postcranial skeletal remains.
the Carboniferous period Eogyrinus was a
particularly large predator
that had an almost eel-like body that measured out over four meters in
length. This body, which featured limbs severely reduced in
physical size, was an adaptation to swimming and hunting in
Carboniferous swamps which would have been clogged with dense weeds,
submerged plants and roots. A body with a very small frontal profile
like Eogyrinus had would have had little
difficultly in navigating the
submerged obstacles, meaning that Eogyrinus could
root out hidden
prey no matter where they tried to hide.
In more modern times, Eogyrinus has been speculated to be synonymous with the genus Pholiderpeton. If this is correct then fossils attributed to Eogyrinus will have to be renamed and moved to Pholiderpeton since Pholiderpeton was named long before Eogyrinus was.
- Croonian lecture.—The evolution and origin of the Amphibia. - Proceedings of the Royal Society of London, Series B 214:189-257. - D. M. S. Watson - 1926.
- The axial skeleton of the labyrinthodont Eogyrinus attheyi. - Journal of Zoology. 150: 199-222. - A. L. Panchen - 1966.
- The skull and skeleton of Eogyrinus attheyi Watson (Amphibia: Labyrinthodontia). - Philosophical Transactions of the Royal Society of London, B. 263: 279-326. - A. L. Panchen - 1972.
- Dates, nodes and character conflict: addressing the lissamphibian origin problem. - Journal of Systematic Palaeontology. 5 (1): 69–122.- M. Ruta & M. I. Coates - 2007.