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The new species of the Mississippian conodonts Lochriea monocarinata n. sp. extends the diversity of the ornamented representatives of the genus LochrieaScott, 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.
Une espèce nouvelle, Lochriea monocarinata n. sp., et sa position dans le morphoespace du genre Lochriea Scott, 1942 (Conodonta, Mississippien).
La nouvelle espèce de conodontes du Mississippian Lochriea monocarinata n. sp. élargit la diversité des représentants ornementés du genre LochrieaScott, 1942. Lochriea monocarinata n. sp. diffère de ses proches parents par la présence d'une crête nodosée uniquement sur la partie interne (caudale) de la coupe basale asymétrique. L'aire de répartition de la nouvelle espèce, limitée par la zone à Lochriea ziegleri, permet de l'utiliser comme marqueur biostratigraphique auxiliaire du Serpukhovien inférieur.
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