Triodus

Triodus is an extinct genus of xenacanthiform cartilaginous fish that lived from the Carboniferous to the Permian. In 2017, a new species Triodus richterae was described from the Rio do Rasto Formation of Brazil.^[1]

Triodus Temporal range: Late Carboniferous–Middle Permian PreꞒ Ꞓ O S D C P T J K Pg N
Fossil
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Order:	†Xenacanthida
Family:	†Xenacanthidae
Genus:	†Triodus Jordan, 1849
Species
T. elpia T. richterae

Restoration of T. sesselensis