Leptaenopyxis, HAVLICEK, 1963

Mergl, Michal & Budil, Petr, 2019, Rhynchonelliform Brachiopods And Trilobites Of The ‘ Upper Dark Interval’ In The Koněprusy Area Devonian, Eifelian, Kačák Event; The Czech Republic, Fossil Imprint 75 (1), pp. 92-107 : 95

Leptaenopyxis (?) sp.

Pl. 1, Fig. 5

M a t e r i a l. One ventral valve (PCZCU 2265).

D e s c r i p t i o n. The shell is small, 6.6 mm wide and 3.5 mm long, transversely subrectangular, widest at the hinge line, with a few weak incomplete rugae on the flat disc. The folding of the shell along its periphery most likely represents the first entire ruga. The interior bears fine endospines.

R e m a r k s. The shell apparently belonged to an immature individual lacking a geniculation and prominent concentric rugae which are characteristic for larger shells of leptaenids. The shell may belong to Leptaenopyxis irena ( HAVLÍČEK, 1967) . This species is rare in the Suchomasty Limestone of Emsian age ( Havlíček and Kukal 1990) but the same or closely related but yet undescribed leptaenide occurs in the upper part of the Acanthopyge Limestone (Eifelian, Tortodus kockelianus Zone ).

O c c u r r e n c e. UDI, sample TM 10.