Definition of Acanthodian. Meaning of Acanthodian. Synonyms of Acanthodian

- Acanthodii or acanthodians is an extinct class of gnathostomes (jawed fishes). They are currently considered to represent a paraphyletic grade of various...
- This list of acanthodian genera is an attempt to create a comprehensive listing of all genera that have ever been included in the subclass Acanthodii...
- considered to have evolved from acanthodians. The discovery of Entelognathus and several examinations of acanthodian characteristics indicate that bony...
- Nerepisacanthus is an extinct genus of acanthodian, probably acritolepid, from Middle Silurian (?late Llandovery (Telychian) to Ludlow stages) deposits...
- cartilaginous fishes, as well as extinct prehistoric fish such as placoderms and acanthodians. Most gnathostomes have retained ancestral traits like true teeth, a...
- Xylacanthus is a genus of extinct acanthodian fish belonging to the family Ischnacanthidae. It lived during the Silurian to Devonian periods. Three species...
- Ischnacanthus is an extinct genus of acanthodian jawed fish. It lived from the Pridoli to the Lochkovian. The type species I. gracilis is only known from...
- supposedly includes the tetrapods, bony fish, and the wholly extinct acanthodian fish. Key characters of this group include an operculum and a single...
- Parexus is an extinct genus of acanthodian fish. Acanthodians are often referred to as ‘spiny sharks’, although acanthodians are not true sharks and evolved...
- Silurian was the diversification of jawed fish, which include placoderms, acanthodians (which gave rise to cartilaginous fish) and osteichthyan (bony fish,...