Akmonistion

Akmonistion Temporal range: Late Devonian–Early Carboniferous PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	†Symmoriiformes
Family:	†Stethacanthidae
Genus:	†Akmonistion
Species:	†A. zangerli
Binomial name
†Akmonistion zangerli Coates & Sequeira, 2001

Akmonistion is an extinct genus of holocephalian that lived in the Early Carboniferous. The genus contains a single species, A. zangerli. It is distinguished by an unusual enlarged formation of the dorsal fin, called a "spine-brush complex", of unknown function. This is also found in the better known genus Stethacanthus. Remains have only been found near Bearsden in Scotland.^[1][2] The genus name is derived from the Ancient Greek “akmon” (“anvil”) + “istion” (“sail”) referring to the appearance of its first dorsal fin.^[3]

References[]

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