Glyptolepis (fish)
Extinct genus of bony fishes
From Wikipedia, the free encyclopedia
Glyptolepis is an extinct genus of freshwater porolepiform lobe-finned fish which lived during Devonian Period, from the early Eifelian to the Givetian Age.[1][2][3][4]
| Glyptolepis Temporal range: | |
|---|---|
| |
| Glyptolepis fossil from the Naturhistorisches Museum Wien | |
 | |
| Glyptolepis reconstruction | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Order: | †Porolepiformes |
| Family: | †Holoptychiidae |
| Genus: | †Glyptolepis Agassiz, 1843 |
| Type species | |
| †Glyptolepis leptopterus Agassiz, 1844 | |
| Species | |
|
See text | |
The following species are known:[5][6]
- †G. baltica Gross, 1936 - Givetian of Latvia (Lode Formation)
- †G. groenlandica Jarvik, 1972 - Eifelian of Greenland (Nathorst Fjord Formation)[7]
- †G. leptopterus Agassiz, 1844 (type species) - Eifelian of Scotland (Caithness Flagstone), including Orkney Isles (=G. elegans Agassiz, 1844)[8]
- †G. paucidens (Agassiz, 1844) - Eifelian of Scotland (Caithness Flagstone), including Orkney Isles
The former species G. microlepidotus is now placed in its own genus, Gyroptychius, as is G. quebecensis, now placed in Quebecius.[5][9]
Glyptolepis is considered a stem lungfish, and its pectoral fins especially resemble those of the extant lungfish Neoceratodus.[4]
G. groenlandica is known from a three-dimensionally preserved skull, of which the morphology of the braincase and the endocast is relatively well-known due to serial grinding, among the best known internal cranial anatomy of any porolepiform.[10]
