Akmonistion is an extinct genus of shark that lived in the Early Carboniferous Period. It was originally ascribed to the poorly defined genera of Cladodus and the extremely similar Stethacanthus. Its remains have been found in the Manse Burn Formation (Serpukhovian, Lower Carboniferous) of Bearsden, Scotland. The only species is Akmonistion zangerli
Due to Akmonistion's non-streamlined body, it was unsuited for sudden acceleration, and was most likely not adapted to sustain any form of high-speed pursuit of it's prey.
- ^ A new Stethacanthid Chondrichthyan from the Lower Carboniferous of Bearsdon, Scotland. M. I. Coates and S. E. K. Sequeira, Journal of Vertebrate Paleontology, 2001, 21(3):438–459
- Vertebrate Palaeontology, by Michael J. Benton
- Coates, M.I., and Sequeira, S.E.K. 2001. A new stethacanthid chondrichthyan from the lower Carboniferous of Bearsdon, Scotland. Journal of Vertebrate Paleontology 21(3):438–459. (abstract at link)