|Title||Phylogenetic and Paleogeographic Relationships of the Varasichthyid Group (Teleostei) from the Late Jurassic of Central and South-America|
|Publication Type||Journal Article|
|Year of Publication||1994|
|Journal||Revista Geologica De Chile|
|Keywords||chile, cuba, domeykos, germany, late jurassic, luisichthys, protoclupea, systematics, teleostean fishes, tethys seaway, varasichthys|
The phylogenetic and geographic relationships of certain Jurassic teleosts are studied using cladistic methodology. According to current evidence the Late Jurassic fishes Domeykos, Protoclupea, and Varasichthys from Chile and Luisichthys from Cuba form a monophyletic group, the varasichthyid group. The monophyly of this group is supported by five synapomorphies. Ascalabos voithii from the Late Jurassic of southern Germany is its sister group. This sister group relationship is supported by two synapomorphies. The Ichthyodectifonnes and the varasichthyid group are the only monophyletic assemblages that can be identified among Jurassic teleosts. The phylogenetic relationships among Ascalabos, Domeykos, Protoclupea, Varasichthys, and Luisichthys provide evidence of a biogeographic relationship between Europe (southern Germany), Central America (Cuba), and southern South America (Chile) through the Tethys seaway during the Late Jurassic.