Biology:Rhomphaiodon

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Short description: Extinct genus of prehistoric sharks

Rhomphaiodon
Temporal range: Late Triassic-Early Jurassic, 215.56–175.6 Ma
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Order: †Synechodontiformes
Genus: †Rhomphaiodon
Duffin, 1993
Type species
†Rhomphaiodon minor
Duffin, 1993
Species
  • †R. minor Duffin, 1993 (type)
  • †R. nicolensis Duffin, 1993
Synonyms

Rhomphaiodon is an extinct genus of prehistoric sharks in the order Synechodontiformes that has been found in Late Triassic and Early Jurassic deposits located in Europe.[1] The type species R. minor was originally named as a species of Hybodus in 1837 by Louis Agassiz.[2] A second species, R. nicolensis, was added when the genus was named in 1993.[3]

Fossil distribution

Fossils of Rhomphaiodon have been found in:[4]

Triassic
  • Grès de Mortinsart Formation, Norian-Rhaetian Belgium (R. minor)[5]
  • Sables de Mortinsart Formation, Norian Belgium (R. minor)[6]
  • near Saint-Laurent-du-Var, Rhaetian France (R. minor)[7][8]
  • Gres à Avicula contorta Formation, Rhaetian France (R. nicolensis)[9][3]
  • Apfelstädtgrundes, Rhaetian Germany (R. minor)[10]
  • Kössener Schichten Formation (Cochloceras suessi ammonoid zone), Rhaetian Germany (R. minor)[11]
  • Steinmergel Group, Norian Luxembourg (R. minor)[12][13]
  • Magnesian Conglomerate, Rhaetian England (R. minor)[14][15]
  • Westbury Formation, Rhaetian England (R. minor)[16][17][18]
  • Microlestes Quarry, Frome, Rhaetian England (R. minor)[19]
  • Manor Farm Quarry, Gloucestershire, Rhaetian England (R. minor)[1]
  • Penarth Group, Rhaetian England (R. minor)[1]
  • Cribbs Causeway, Bristol, Rhaetian England (R. minor)[1]
  • Pullastra Sandstone, Rhaetian England (R. minor)[20]
Jurassic
  • Aubange, Fleche (Hildoceras bifrons zone), Toarcian Belgium (R. minor)[21]
  • Dudelange, Ginzebierg, Toarcian Luxembourg (R. minor)[22]
  • Windsor Hill, Buckinghamshire (Lias Group?), Pliensbachian England (R. minor)[23]

References

  1. ↑ 1.0 1.1 1.2 1.3 G. Cuny and S. Risnes. 2005. The Enameloid Microstructure of the Teeth of Synechodontiform Sharks (Chondrichthyes: Neoselachii). PalArch 3(2):9-19
  2. ↑ L. Agassiz. 1837. Recherches Sur Les Poissons Fossiles. Tome III (livr. 8-9). Imprimérie de Petitpierre, Neuchatel viii-72
  3. ↑ 3.0 3.1 C. J. Duffin. 1993. Late Triassic sharks teeth (Chondrichthyes, Elasmobranchii) from Saint-Nicolas-de-Port (north-east France). Belgian Geological Survey, Professional Paper, Elasmobranches et Stratigraphie 264(1993):7-32
  4. ↑ "Rhomphaiodon". Fossilworks. http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=242730. 
  5. ↑ C. J. Duffin and D. Delsate. 1993. The age of the Upper Triassic vertebrate fauna from Attert (Province of Luxembourg, Belgium). Belgian Geological Survey, Professional Paper, Elasmobranches et Stratigraphie 264(1993):33-44
  6. ↑ C. J. Duffin, P. Coupatez, J. C. Lepage and G. Wouters. 1983. Rhaetian (Upper Triassic) marine faunas from "Le Golfe du Luxembourg" in Belgium (preliminary note). Bulletin de la Société Belge de Géologie 92(4):311-315
  7. ↑ G. Corroy. 1934. Les poissons et les reptiles du Muschelkalk et du Rhetien de Basse-Provence. Bulletin de la Societe geologique de France 3, serie 5(5-6):475-483
  8. ↑ V. Fischer, H. Capetta, P. Vincent, G. Garcia, S. Goolaerts, J. E. Martin, D. Roggero and X. Valentin. 2014. Ichthyosaurs from the French Rhaetian indicate a severe turnover across the Triassic-Jurassic boundary. Naturwissenschaften 101:1027-1040
  9. ↑ D. Sigogneau-Russell. 1983. Nouveaux taxons de mammifères rhétiens [New taxa of Rhaetian mammals]. Second Symposium on Mesozoic Terrestrial Ecosystems, Jadwisin 1981. Acta Palaeontologica Polonica 28(1-2):233-249
  10. ↑ R. Amthor. 1908. Das Bonebed im Rhät des Apfelstädtgrundes südöstlich von Gotha. Zeitschrift für Naturwissenschaften 80:91-96
  11. ↑ H. Zapfe. 1976. Ein großer Ichthyosaurier aus den Kössener Schichten der Nordalpen. Annalen des Naturhistorischen Museums in Wien 80:239-250
  12. ↑ G. Hahn, J. C. Lepage, and G. Wouters. 1984. Cynodontier-Zähne aus der Ober-Trias von Medernach, Grossherzogtum Luxemburg [Cynodontian teeth from the Upper Triassic of Medernach, Grand Duchy of Luxembourg]. Bulletin de la Société Belge de Géologie 93(4):357-373
  13. ↑ P. Godefroit, G. Cuny, D. Delsate and M. Roche. 1998. Late Triassic vertebrates from Syren (Luxembourg). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 210(3):305-343
  14. ↑ Foffa, D.; D. I. Whiteside; P. A. Viegas, and M. J. Benton. 2014. Vertebrates from the Late Triassic Thecodontosaurus-bearing rocks of Durdham Down, Clifton (Bristol, UK). Proceedings of the Geologists' Association 125. 317–332.
  15. ↑ W. Buckland. 1824. Reliquiæ Diluvianæ; or, Observations on the Organic Remains Contained in Caves, Fissures, and Diluvial Gravel, and on Other Geological Phenomena, Attesting the Action of an Universal Deluge. Second Edition. John Murray, London 1-30
  16. ↑ D. M. Martill and A. Dawn. 1986. Fossil vertebrates from new exposures of the Westbury Formation (Upper Triassic) at Newark, Nottinghamshire. Mercian Geologist 10(2):127-133
  17. ↑ C. J. Duffin. 1982. Teeth of a new selachian from the Upper Triassic of England. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte 1982(3):156-166
  18. ↑ P. Egerton. 1854. On some new genera and species of fossil fishes. The Annals and Magazine of Natural History, Second Series 13:433-436
  19. ↑ R. Owen. 1871. Monograph of the fossil Mammalia of the Mesozoic formations. 24(110):vi-115
  20. ↑ W. A. Macfadyen. 1970. Geological Highlights of the West Country. A Nature Conservancy Handbook 1-296
  21. ↑ D. Delsate and P. Godefroit. 1995. Chondrichtyens du Toarcien inferieur d'Aubange (Lorraine belge). Belgian Geological Survey, Professional Paper, Elasmobranches et Stratigraphie 278(1994):23-43
  22. ↑ D. Delsate. 2003. Une nouvelle faune des poissons et requins Toarciens du sud du Luxembourg (Dudelange) et de L'Allemange (Schömberg). Bulletin de l'Académie Lorrain des Sciences 42:13-49
  23. ↑ W. Kühne. 1956. The Liassic therapsid Oligokyphus. British Museum (Natural History), London 1-149

Wikidata ☰ Q104835017 entry



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