# Tomewingia
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{{short description|Extinct genus of ray}}
{{Automatic taxobox
| image =
| image_caption =
| taxon = Tomewingia
| fossil_range = {{fossil range|Maastrichtian}}
| authority = Case & Cappetta, 2013
}}
'''''Tomewingia''''' is an extinct genus of [rajiform ray](/source/Rajiformes) from the [Maastrichtian](/source/Maastrichtian) epoch of the [Cretaceous](/source/Cretaceous) period.[{{Cite web|title=Tomewingia problematica {{!}} Shark-References|url=https://shark-references.com/species/view/Tomewingia-problematica|access-date=2020-11-27|website=shark-references.com|language=en}}] It is known solely from isolated teeth from a single species, '''''T. problematica'''.'' The genus is named for Thomas Ewing.[{{cite journal|last1=Case|first1=G.R.|last2=Cappetta|first2=H.|year=2013|title=Ewingia Case & Cappetta, 1997 (Chondrichthyes: Rajiformes), preoccupied by Ewingia pearse, 1929 (Insecta: Arachnida)|journal=Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen|volume=268|issue=1|pages=125–126|doi= 10.1127/0077-7749/2013/0320}}] The species was first described from the late Maastrichtian [Kemp Clay Formation](/source/Kemp_Clay) of [Hunt County, Texas](/source/Hunt_County%2C_Texas), but has since been found in Maastrichtian strata in the [Arkadelphia Formation](/source/Arkadelphia_Formation) of [Hot Spring County, Arkansas](/source/Hot_Spring_County%2C_Arkansas),[Becker, M.A., Chamberlain, J.A. & Wolf, G.E. (2006): Chondrichthyans from the Arkadelphia Formation (Upper Cretaceous: upper Maastrichtian) of Hot Spring County, Arkansas. – Journal of Paleontology, 80 (4): 700-716] the [Severn Formation](/source/Severn_Formation) of [Prince George's County, Maryland](/source/Prince_George's_County%2C_Maryland), and Fairpoint Member of the [Fox Hills Formation](/source/Fox_Hills_Formation) in [Meade County, South Dakota](/source/Meade_County%2C_South_Dakota).[Becker, M.A., Chamberlain, J.A. & Terry, D.O. (2004): Chondrichthyans from the Fairpoint Member of the Fox Hills Formation (Maastrichtian), Meade County, South Dakota. – Journal of Vertebrate Paleontology, 24 (4): 780-793.] This genus was originally named ''[Ewingia](/source/Ewingia)''; however, this name was found to be preoccupied by a [mite](/source/mite) found in the gills of certain land crabs. This rendered the name a [junior homonym](/source/Homonym_(biology)).