{{Short description|Extinct genus of fishes}} {{Automatic taxobox | fossil_range = {{fossilrange|Bathonian|Bathonian|Middle Jurassic (Bathonian)}} | taxon = Gyronchus | authority = Agassiz, 1844 | type_species = ''Gyronchus oblongus'' | type_species_authority = Agassiz, 1844 }}
'''''Gyronchus''''' is an extinct genus of prehistoric marine pycnodont fish from the Jurassic. This genus is currently treated as a wastebasket taxon, with several genera such as ''Macromesodon'' and ''Turbomesodon'' being split out of it.<ref>{{Cite journal |last1=Poyato-Ariza |first1=F. J. |last2=Wenz. |first2=S. |date=2004 |title=The new pycnodontid fish genus Turbomesodon, and a revision of Macromesodon based on new material from the Lower Cretaceous of Las Hoyas, Cuenca, Spain |url=https://www.researchgate.net/publication/257170366 |journal=Mesozoic Fishes 3—Systematics, Paleoenvironments and Biodiversity. |pages=341–378}}</ref> The type species, '''''G. oblongus''''' <small>Agassiz, 1844</small> is known from the Bathonian-aged Stonesfield Slate of England.<ref>{{Cite book |last=Woodward |first=Arthur Smith |url=https://books.google.com/books?id=PwfNqZmEWYIC |title=Catalogue of the Fossil Fishes in the British Museum (Natural History): containing the Actinopterygian Teleostomi of the orders Chondrostei (concluded), Protospondyli, Aetheospondyli, and Isospondyli (in part) |date=1895 |publisher=Trustees of the British Museum |language=en}}</ref> Another apparent freshwater species, ''G. dumblei'' is known from the Early Cretaceous-aged Paluxy Formation of Texas, US and the Antlers Formation of Oklahoma, but is more likely a member of ''Turbomesodon''.<ref>{{Cite journal |last1=Winkler |first1=Dale A. |last2=Murry |first2=Phillip A. |last3=Jacops |first3=Louis L. |date=1990 |title=Early Cretaceous (Comanchean) Vertebrates of Central Texas |url=https://www.jstor.org/stable/4523300 |journal=Journal of Vertebrate Paleontology |volume=10 |issue=1 |pages=95–116 |doi=10.1080/02724634.1990.10011794 |jstor=4523300 |bibcode=1990JVPal..10...95W |issn=0272-4634}}</ref><ref>{{Cite journal |last1=Brinkman |first1=Daniel |last2=Nydam |first2=Randall L. |date=1997-01-01 |title=ADDITIONS TO THE VERTEBRATE FAUNA OF THE ANTLERS FORMATION (LOWER CRETACEOUS), SOUTHEASTERN OKLAHOMA |url=https://www.academia.edu/71776612 |journal=Oklahoma Geology Notes}}</ref><ref>{{Cite journal |last1=Cawley |first1=John J. |last2=Kriwet |first2=Jürgen |date=2024-04-09 |title=The Fossil Record and Diversity of Pycnodontiform Fishes in Non-Marine Environments |journal=Diversity |language=en |volume=16 |issue=4 |pages=225 |doi=10.3390/d16040225 |doi-access=free |bibcode=2024Diver..16..225C |issn=1424-2818}}</ref>
==See also== {{Portal|Paleontology|Fish}} * Prehistoric fish * List of prehistoric bony fish
== References == {{Reflist}}
==External links== * [http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class Bony fish in the online Sepkoski Database]
{{Taxonbar|from=Q5625504}} Category:Pycnodontiformes genera
{{paleo-rayfinned-fish-stub}} {{Jurassic-fish-stub}} Category:Middle Jurassic bony fish Category:Jurassic fish of Europe Category:Fossils of England Category:Bathonian genera Category:Fossil taxa described in 1844 Category:Taxa named by Louis Agassiz