Xylacanthus (fish) explained

Xylacanthus is a genus of extinct acanthodian fish belonging to the family Ischnacanthidae. It lived during the Silurian to Devonian periods. Three species of Xylacanthus are known, X. kenstewarti from Late Wenlock to Early Ludlow from the Mackenzie Mountains in Canada,^[1] X. minutus from Lochkovian of Spitsbergen in Norway,^[2] and X. grandis from Siegenian of Spitsbergen.^[3] X. grandis was the largest acanthodian with long jaw bone and estimated total length of .

Notes and References

1. Hanke . Gavin F . Wilson . Mark VH . Lindoe . L Allan . 2001 . New species of Silurian acanthodians from the Mackenzie Mountains, Canada . Canadian Journal of Earth Sciences . 38 . 11 . 1517–1529 . 10.1139/e01-039 . 0008-4077.
2. 1997 . Nouveaux poissons acanthodiens du Dévonien du Spitsberg . Geodiversitas . en . 19 . 3 . 505–513.
3. Ørvig . Tor . 1967 . Some new acanthodian material from the Lower Devonian of Europe . Journal of the Linnean Society of London, Zoology . en . 47 . 311 . 131–153 . 10.1111/j.1096-3642.1967.tb01400.x.