Review of brachyuran crabs from the late Miocene (Messinian) of Oran, Algeria Author Charbonnier, Sylvain Centre de Recherche en Paléontologie - Paris (CR 2 P, UMR 7207), MNHN, CNRS, Sorbonne Université, Muséum national d’Histoire naturelle, 57 rue Cuvier, F- 75231 Paris, cedex 05 (France) sylvain.charbonnier@mnhn.fr Author Garassino, Alessandro Department of Earth and Biological Sciences, Loma Linda University, Loma Linda, 92350 CA (United States) alegarassino@gmail.com Author Pasini, Giovanni Via Alessandro Volta, 16 22070 Appiano Gentile (Italy) giovannialdopasini@gmail.com Author Chény, Cédric Géosciences Rennes, UMR 6118, CNRS Université de Rennes, F- 35000 Rennes (France) text Geodiversitas 2024 2024-01-25 46 2 13 29 https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a2.pdf journal article 10.5252/geodiversitas2024v46a2 1638-9395 10566276 urn:lsid:zoobank.org:pub:A141C894-DEC7-42FD-BC7C-2A8A692B0A31 Wahrania arambourgi ( Van Straelen, 1937 ) , n. comb. ( Fig. 2E, F ) Maia [sic] arambourgi Van Straelen, 1937: 475 , 476, pl. 33, fig. 3. — Glaessner 1969 : R502, fig. 314.9. Maja arambourgi – Saint Martin & Müller 1988: 251 . — Moissette & Müller 1990: 738 , 739. — Schweitzer et al. 2010: 97 . TYPE MATERIAL . — Holotype by monotypy ( MNHN.F.R03773 , Arambourg coll.). TYPE LOCALITY . — Les Planteurs quarry , Sanaouber district of Sidi El Houari , Oran . TYPE AGE . — Late Miocene (late Messinian ). DESCRIPTION Carapace Carapace pyriform;pseudorostral spines (= rostrum)longer than the half of carapace length; pseudorostral spines sharp, straight, diverging,slightly deflected;supraorbital eave rimmed with sharp postorbital spine; one very long, sharp hepatic spine, as long as the pseudorostral spines, slightly turned downward; a pair of short,sharp, straight accessorial spines at the base of hepatic spine; one long, sharp epibranchial spine, slightly turned upward; one long, sharp, straight mesobranchial spine, as long as epibranchial spine, directed outward; two long, sharp, straight metabranchial spines, as long as mesobranchial spine, directed posteriorly; narrow posterior margin poorly preserved; meso- and metagastric regions slightly inflated; urogastric and cardiac regions slightly inflated and marked by a deep branchiocardiac groove; dorsal surface of carapace and spines strongly tuberculate(based onVan Straelen 1937 : pl. 33, fig. 3, we note that the surface of carapace was altered and eroded, inducing the loose of ornamentation). DISCUSSION The fossil record of the representatives of the Epialtidae from the Miocene is very scarce. Indeed, only eight genera of the Epialtinae and Pisinae are known to date from the Miocene of Europe ( Hungary and Poland ), North America ( USA ), South America ( Argentina , Peru , and Venezuela ), Taiwan , and Japan ( Schweitzer et al. 2020 ). However, only two fossil species are known to date from the Miocene of the Mediterranean Basin: Herbstia melitense Gatt & De Angeli, 2010 (Pisinae Dana, 1851) from Malta and Wahrania arambourgi ( Van Straelen, 1937 ) , n. comb. ( Wahraniinae n. subfam. ) from Algeria .