A new species, Lochriea monocarinata n. sp., and its position in the morphospace of the genus Lochriea Scott, 1942 (Conodonta, Mississippian)

The new species of the Mississippian conodonts Lochriea monocarinata n. sp. extends the diversity of the ornamented representatives of the genus Lochriea Scott, 1942. Lochriea monocarinata n. sp. differs from its close relatives by the presence of a nodose ridge only on the inner (caudal) part of the asymmetrical basal cup. The range of the new species, restricted to the Lochriea ziegleri Zone, allows it to be used as an auxiliary biostratigraphic marker of the lower Serpukhovian.