Crassigyrinus – Scotland’s Prehistoric Killer Tadpole From Hell | Non-Dinosaurs EXPLAINED

Among the coal swamps of Scotland once swam a giant killer tadpole beast with diminutive legs that pushed itself along with a huge paddle-like tail to engulf its prey with a gaping maw rimmed by many rows of teeth. This critter is the tadpole from hell, the Crassigyrinus!
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Art in Thumbnail belongs to - Ceri Thomas

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RESEARCH
Benton, 2005. Vertebrate Palaeontology 3rd edition. Blackwell Publishing

Clack, J. (1997). The Scottish Carboniferous tetrapod Crassigyrinus scoticus (Lydekker)—cranial anatomy and relationships. Transactions of the Royal Society of Edinburgh: Earth Sciences, 88(3), 127-142. doi:10.1017/S0263593300006908

Clack, J., Porro, L., & Bennett, C. (2017). A Crassigyrinus-like jaw from the Tournaisian (Early Mississippian) of Scotland. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 108(1), 37-46. doi:10.1017/S1755691018000087

Godfrey, S. J. 1988. Isolated tetrapod remains from the Carboniferous of West Virginia. Kirtlandia 43, 27-36.

Herbst, E., & Hutchinson, J. (2018). New insights into the morphology of the Carboniferous tetrapod Crassigyrinus scoticus from computed tomography. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 109(1-2), 157-175. doi:10.1017/S1755691018000804

Panchen, A. L. 1985. On the amphibian Crassigyrinus scoticus Watson from the Carboniferous of Scotland. Philosophical Transactions of the Royal Society of London B 309, 505-568.

Panchen, A., & Smithson, T. (1990). The pelvic girdle and hind limb of Crassigyrinus scoticus (Lydekker) from the Scottish Carboniferous and the origin of the tetrapod pelvic skeleton. Transactions of the Royal Society of Edinburgh: Earth Sciences, 81(1), 31-44. doi:10.1017/S0263593300005113

Panchen, A. L. 1991. The early tetrapods: classification and the shapes of cladograms. In Schultze, H.-P. & Trueb, L. (eds) Origins of the Higher Groups of Tetrapods, Controversy and Consensus. Comstock/Cornell University Press (Ithaca and London), pp. 110-144.

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