Editorial Reviews - Teleostei From the Publisher Kapitel: Pachycormidae, Neoteleostei, Leedsichthys Problematicus, Halosauridae, Chaudhuriidae, Paracanthopterygii, Ostariophysi, Percomorpha, Leptolepides Sprattiformis, Pholidophoriformes, Protacanthopterygii, Leptolepidae, Elopomorpha, Araripichthys, Paraclupeidae, Gonorynchus Abbreviatus, Clupeomorpha, Porichthys Notatus, Phractolaemus Ansorgei, Apteronotidae, Atherinomorpha, Megalops Cyprinoides, Synbranchiformes, Myctophiformes, Gymnotiformes, Megalops Atlanticus, Hypopomidae, Cyematidae, Albuliformes, Percopsiformes, Synbranchidae, Saccopharynx Ampullaceus, Saccopharyngiformes, Ateleopodidae, Macrognathus Siamensis, Neoscopelidae, Sternopygidae, Gonorynchiformes, Notacanthidae, Rhamphichthyidae, Myctophidae, Monognathus, Albulidae, Batrachoididae, Elopiformes, Elops, Aphredoderus Sayanus, Percopsis, Mastacembelidae, Kneriidae, Dactylopteridae, Polymixiidae, Caproidae, Gonorhynchus, Chanos Chanos, Eurypharynx Pelecanoides, Amblyopsidae, Gymnotidae, Electrophorus Electricus. Aus Wikipedia. Nicht dargestellt. Auszug: Teleostei is one of three infraclasses in class Actinopterygii, the ray-finned fishes. This diverse group, which arose in the Triassic period, includes 20,000 extant species in about 40 orders; most living fishes are members of this group. The other two infraclasses, Holostei and Chondrostei, may be paraphyletic. Teleosts have a movable maxilla and premaxilla and corresponding modifications in the jaw musculature. These modifications make it possible for teleosts to protrude their jaws outwards from the mouth. The caudal fin is homocercal, meaning the upper and lower lobes are about equal in size. The spine ends at the caudal peduncle, distinguishing this group from those in which the spine extends into the upper lobe of the caudal fin. The oldest teleost fossils date back to early Triassic. Teleosts are here divided into twelve superorders, but this system is unlikely to be entirely correct