Akmonistion
Extinct genus of cartilaginous fishes / From Wikipedia, the free encyclopedia
Akmonistion is an extinct genus of cartilaginous fish that lived in the Early Carboniferous. The genus contains a single species, A. zangerli, discovered by Stan Wood in 1982.[1] 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.[2][3] The genus name is derived from the Ancient Greek “akmon” (“anvil”) + “istion” (“sail”) referring to the appearance of its first dorsal fin.[2] It reached 62 cm (24 in) in length.[2]
Quick Facts Scientific classification, Binomial name ...
Akmonistion | |
---|---|
Holotype fossil | |
Reconstruction | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Chondrichthyes |
Order: | †Symmoriiformes |
Family: | †Stethacanthidae |
Genus: | †Akmonistion |
Species: | †A. zangerli |
Binomial name | |
†Akmonistion zangerli Coates & Sequeira, 2001 | |
Close