Pirenella bijuga

Harzhauser, Mathias, Guzhov, Aleksandr & Landau, Bernard, 2023, A revision and nomenclator of the Cainozoic mudwhelks (Mollusca: Caenogastropoda: Batillariidae, Potamididae) of the Paratethys Sea (Europe, Asia), Zootaxa 5272 (1), pp. 1-241 : 169

bijuga . Cerithium . Eichwald, 1851

see Tiaracerithium pictum (de Basterot, 1825)

* Cerithium mitrale m. var. bijuga — Eichwald 1851: 87, pl. 7, fig. 14.

Type material. We are not aware of the whereabouts of the type specimens.

Type locality. No type locality defined; specimens were described from Zalistsi and Zhukivtsi ( Ukraine) .

Stratigraphy. Middle Miocene, Sarmatian (Volhynian).

Discussion. A stout morphotype of Tiaracerithium pictum with two prominent spiral rows of well-defined beads and a third spiral row largely covered by the subsequent whorl.

Central Paratethys. Sarmatian, Volhynian (Middle Miocene): Polish-Ukrainian Fore-Carpathian Basin: Zalistsi, Zhukivtsi, (Ternopil Region, Ukraine) ( Eichwald 1851, 1853); Eastern Slovakian Basin: Skaroš, Nižná Myšľa, Trstené pri Hornáde ( Slovakia) ( Švagrovský 1954).

Eastern Paratethys. Sarmatian, Volhynian (Middle Miocene): Rîbnița ( Moldova) ( Kolesnikov 1935).