Lycoptera
Lycoptera davidi
Lycoptera is one belonging to the family of Lycopteridae Real bony fish ( Teleostei ). The type Lycoptera davidi lived Millionenen before 157-136 years, ie in the period from the Kimmeridgian ( Upper Jurassic) to Valanginian ( Lower Cretaceous ). Fossils have been found mainly in Liaoning ( Rehe province ) in the northeast of the People 's Republic of China. The forthcoming here Jiufotang formation contains a rich Lycoptera - ichthyofauna, which was lodged during the period upper Aptian - Albian lower. They are the oldest fossil relatives of the still living Knochenzünglerähnlichen ( Osteoglossamorpha ).
Features
In Lycoptera is diminutive freshwater fish, which had a size of seven to nine inches in section and could be a maximum of about 18 inches long. They had a slender, elongated body, a small head with a rounded snout and upper jaw constant. The dorsal fin was far behind, above the anal fin, pectoral fins were narrow and long, the tail fin slightly emarginate.
Lycoptera were probably schooling fish and fed mainly on driving grasses.
Species
- Lycoptera davidi
- Lycoptera muroii