Details

Autor(en) / Beteiligte

• GRANDE, TERRY
• POYATO-ARIZA, FRANCISCO JOSÉ

Titel

Phylogenetic relationships of fossil and Recent gonorynchiform fishes (Teleostei: Ostariophysi)

Ist Teil von

• Zoological journal of the Linnean Society, 1999-02, Vol.125 (2), p.197-238

Ort / Verlag

Elsevier Science Ltd

Erscheinungsjahr

1999

Quelle

Wiley Online Library

Beschreibungen/Notizen

• This paper represents the first cladistic analysis of the interrelationships of all nominal fossil and living gonorynchiform genera. Gonorynchiformes is the basal group of the superorder Ostariophysi, and is confirmed as monophyletic on the basis of 12 synapomorphies. The Gonorynchiformes is be subdivided into two monophyletic suborders, Chanoidei and Gonorynchoidei. The Chanoidei includes the family Chanidae, which in turn includes the RecentChanosplus five fossil genera, grouped in two subfamilies: Chaninae ((Chanos+ †Tharrhias) + †Parachanos+†Dastilbe) and †Rubiesichthyinae(†Rubiesichthys+ †Gordichthys). †Aethalionopsisis the sister-group to the Chanidae. Gonorynchoidei includes two families Gonorynchidae and Kneriidae. Gonorynchidae is formed by (Gonorynchus, †Notogoneus) and four fossil taxa of uncertain definition and interrelationships: †Charitosomus, †Charitopsis, †Ramallichthys, and †Judeichthys. The last four genera were previously included in the families †Charitosomidae and †Judeichthyidae, which could not be supported as monophyletic in this analysis. Kneriidae consists of two subfamilies Phractolaeminae with one genusPhractolaemus, and Kneriinae which includes ((Kneria+Parakneria) + (Grasseichthys+Cromeria)), the latter two being paedomorphic forms. The Phractolaeminae and the Kneriinae are freshwater African taxa with no known fossil record. The order Gonorynchiformes is represented herein by 18 genera, extending back to the Early Cretaceous. More work is required to clarify the interrelationships of the Gonorynchidae and the paedomorphic characters that apparently played an important role in the evolution of this morphologically diverse group of fishes.