Animalia > Chordata > Agassizodontidae > Helicoprion

Helicoprion

Wikipedia Abstract

Helicoprion is a long-lived genus of extinct, shark-like eugeneodontid holocephalid fish. Almost all fossil specimens are of spirally arranged clusters of the individuals' teeth, called "tooth whorls." Helicoprion first arose in the oceans of the early Permian 290 million years ago, survived the Permian–Triassic extinction event, and eventually became extinct during the Early Triassic, 250 million years ago. Its name is Greek for "spiral saw". The closest living relatives of Helicoprion (and other eugeneodontids) are the chimaeras.
View Wikipedia Record: Helicoprion

Species

External References

Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0