Glyptolepis (fish)
| 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 | |
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]
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 (Old Red Sandstone), including Orkney Isles (=G. elegans Agassiz, 1844)[8]
- †G. paucidens (Agassiz, 1844) - Eifelian of Scotland (Old Red Sandstone), 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 has a three-dimensionally preserved skull, for which the morphology of the braincase and the endocast is relatively well-known, among the best of any porolepiforms.[10]
References
- ^ Mark Carnall (28 February 2014). "Underwhelming fossil fish of the month: February 2014". Museums & Collections Blog. University College London. Retrieved 29 September 2015.
- ^ Richard Cloutier & Per Erik Ahlberg (1996). "Morphology, Characters, and the Interrelationships of Basal Sarcopterygians". In Melanie L.J. Stiassny; Lynne R. Parenti & G. David Johnson (eds.). Interrelationships of Fishes. Academic Press. p. 457. ISBN 9780080534923.
- ^ Per Erik Ahlberg (1992). "A new holoptychiid porolepiform fish from the Upper Frasnian of Elgin, Scotland". Palaeontology. 35 (4): 813–828.
- ^ a b Ahlberg, Per Erik (June 1989). "Paired fin skeletons and relationships of the fossil group Porolepiformes (Osteichthyes: Sarcopterygii)". Zoological Journal of the Linnean Society. 96 (2): 119–166. doi:10.1111/j.1096-3642.1989.tb01824.x. ISSN 0024-4082.
- ^ a b Woodward (1891). Catalogue of the Fossil Fishes in the British Museum (Natural History).
- ^ "PBDB Taxon". paleobiodb.org. Archived from the original on 2024-12-22. Retrieved 2026-02-26.
- ^ Jarvik, Erik (1972-12-29). "Middle and Upper Devonian Porolepiformes from East Greenland with Special Reference to Glyptolepis Groenlandica . sp". Meddelelser om Grønland (in Danish). 187 (2): 379 pp.–379 pp. ISSN 2794-6827.
- ^ "Glyptolepis leptopterus". Landscapes of Orkney. Retrieved 2024-01-25.
- ^ Schultze, Hans-Peter; Arsenault, Marius (1987). "Quebecius quebecensis (Whiteaves), a porolepiform crossopterygian (Pisces) from the Late Devonian of Quebec, Canada". Canadian Journal of Earth Sciences. 24 (12): 2351–2361. doi:10.1139/e87-221. ISSN 0008-4077.
- ^ Friedman, Matt; Fernández, Jorge MONDÉJAR; Henderson, Struan C.; Challands, Thomas; Giles, Sam (2024). "Braincase and endocast anatomy in porolepiforms (Sarcopterygii: Dipnomorpha): evidence from the Early Devonian (Emsian) 'porolepidid' Durialepis edentatus". Earth and Environmental Science Transactions of The Royal Society of Edinburgh. 115 (3–4): 130–146. doi:10.1017/S1755691024000057. ISSN 1755-6910.