{{Short description|Genus of cartilaginous fishes}} {{Automatic taxobox | image = Pastinachus_sephen2.jpg | image_caption = Cowtail stingray (''P. sephen'') | taxon = Pastinachus | authority = Rüppell, 1829 | type_species = ''Raja sephen'' | type_species_authority = Forsskål, 1775 | synonyms = * ''Hypolophus'' <small>Müller & Henle, 1837</small> }}
'''''Pastinachus''''' is a genus of stingrays in the family Dasyatidae. This genus was long held to be monotypic, containing only the cowtail stingray (''P. sephen''). Recent studies of Indo-Pacific stingrays have revealed that there are in fact a number of different species of ''Pastinachus'', and that some former junior synonyms may need to be resurrected.<ref>{{cite journal |title=''Pastinachus solocirostris'' sp. nov., a new species of Stingray (Elasmobranchii: Myliobatiformes) from the Indo–Malay Archipelago |author=Last, P.R. |author2=Manjaji, B.M. |author3=Yearsley, G.K. |name-list-style=amp |journal=Zootaxa |volume=1040 |pages=1–16 |year=2005|doi=10.11646/zootaxa.1040.1.1 }}</ref>
==Species== *''Pastinachus ater'' <small>(W. J. Macleay, 1883)</small> (Broad cowtail stingray) *''Pastinachus gracilicaudus'' <small>Last & Manjaji-Matsumoto, 2010</small> (Narrow cowtail stingray) *''Pastinachus sephen'' <small>(Forsskål, 1775)</small> (Cowtail stingray) *''Pastinachus solocirostris'' <small>Last, Manjaji & Yearsley, 2005</small> (Roughnose cowtail stingray) *''Pastinachus stellurostris'' <small>Last, Fahmi & Naylor, 2010</small> (Starrynose cowtail stingray)
== Phylogeny == Combining the molecular genetic relationship analysis of the NADH2 DNA, which was used to assign ''Pastinachus stellurostris'',<ref>Peter R. Last, Fahmi, Gavin J. P Naylor: ''Pastinachus stellurostris sp. nov., a new stingray (Elasmobranchii, Myliobatiformes) from Indonesian Borneo.'' In: P. R. Last, W. T. White, J. J. Pogonoski (Hrsg.): ''Descriptions of new sharks and rays from Borneo.'' CSIRO Marine and Atmospheric Research Paper no. 32; S. 129–140, 2010</ref> and the analysis of the COI gene, which was used to evaluate ''P. gracilicaudus'' accordingly,<ref>Peter R. Last, B. Mabel Manjaji-Matsumoto: ''Description of a new stingray,'' Pastinachus gracilicaudus ''sp. nov. (Elasmobranchii, Myliobatiformes), based on material from the Indo-Malay Archipelago.'' In: P. R. Last, W. T. White, J. J. Pogonoski (Hrsg.): ''Descriptions of new sharks and rays from Borneo.'' CSIRO Marine and Atmospheric Research Paper no. 32; S. 115–128, 2010</ref> results in approximately the following cladogram for the genus:
500x500px|Kladogramm der Gattung ''Pastinachus''
==References== * {{FishBase genus | genus = Pastinachus| month = February | year = 2011}} {{Reflist}}
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Category:Pastinachus Category:Dasyatidae Category:Batomorphi genera Category:Taxa named by Eduard Rüppell
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