Uralyroceras, Titus & Korn & Harrell & Lambert, 2015

Titus, A. L., Korn, D., Harrell, J. E. & Lambert, L. L., 2015, Late Viséan (late Mississippian) ammonoids from the Barnett Shale, Sierra Diablo Escarpment, Culberson County, Texas, USA, Fossil Record 18 (2), pp. 81-104 : 101

Uralyroceras n. gen.

Type species: Pachylyroceras constrictum Ruzhencev and Bogoslovskaya, 1971 .

Genus diagnosis: Representatives of the family Neoglyphioceratidae with subevolute to evolute conch, which becomes more evolute in the adult stage. 20–30 coarse spiral lines, growth lines, and shell constrictions nearly linear or with low ventral projection. Suture line with narrow external lobe, usually with slightly sinuous flanks.

Included species:

angustum : Pachylyroceras angustum Ruzhencev and Bogoslovskaya, 1971, p. 246 ; South Urals.

consequens : Pachylyroceras consequens Ruzhencev and Bogoslovskaya, 1971, p. 245 ; South Urals.

constrictum : Pachylyroceras constrictum Ruzhencev and Bogoslovskaya, 1971, p. 247 ; South Urals.

arquatum : Uralyroceras arquatum new species; South Urals. (new name for Pachylyroceras cloudi in Ruzhencev and Bogoslovskaya, 1971, p. 244).

esini : Pachylyroceras esini Nikolaeva, 1994, p. 83 ; Darvaz ( Tajikistan).

? hyatti : Neoglyphioceras hyatti Gordon, 1965, p. 139 ; Texas.

Discussion: Uralyroceras differs from Pachylyroceras in the course of the shell constrictions, which extend with a low and wide projection across the venter in the new genus but with a ventral sinus as in Pachylyroceras .