The ammonite family Deshayesitidae in the Kopet Dagh Basin, north-east Iran

New ammonoid taxa from theLowerCretaceousGiumalFormation of theTethyanHimalaya (NorthernIndia)

“…Deshayesites fuchsi sp. nov. differs from D. consobrinoides (Sinzow, 1909) (Raisossadat (, figs 4O, 5F–G) by a more convex venter and from D . consobrinus (d'Orbigny, ) by more irregularly branching ribs (comparable to D. dechyi ) and by its smaller size.…”

“…planus Casey, (Casey , fig. 6J–K) figured by Raisossadat () resembles D. fuchsi by ribbing of early whorls but differs in thinner ribs at comparable sizes and the absence of thick (spatulate) ribs in the same stages (fifth whorl). Deshayesites planus shows a wider umbilicus, a steeper umbilical wall and more pronounced umbilical tubercles than D. fuchsi .…”

“…For a detailed comparison between the different genera, see the studies by Bogdanova and Mikhailova (1999, 2004), Bogdanova and Hoedemaeker (2004), Ropolo et al . () and Raisossadat (). Bogdanova and Hoedemaeker (2004) compared the different genera with the newly included (by Bogdanova and Mikhailova, 1999) Neodeshayesites Casey, .…”

“…Deshayesitids from the early Aptian of NE‐Iran (Kopet‐Dagh Basin) were carefully reviewed and figured by Raisossadat (). Thirteen species of the genus Deshayesites were reported by Raisossadat (), with additions to Turkmeniceras and Dufrenoyia . As noted above, most similarities exist with the closely related D. dechyi (Papp, ) figured by Raisossadat (, fig.…”

“…Thirteen species of the genus Deshayesites were reported by Raisossadat (), with additions to Turkmeniceras and Dufrenoyia . As noted above, most similarities exist with the closely related D. dechyi (Papp, ) figured by Raisossadat (, fig. 4M, N).…”