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The Upper Emsian Terebratula Daleidensis ROEMER, 1844 (now Oligoptycherhynchus daleidensis) from the Daleiden “Muldengruppe”, Eifel area, is scrutinized. The ubiquity and considerable stratigraphic range gained by the species in the course of time are exposed and questioned. After examination of the lectotype, here designated, and rich existing collections, return to the original definition of this abundant species is recommended. Rhynchonella inaurita SANDBERGER, G . & F., 1856, commonly mistaken for daleidensis, is assigned to Inaequalibellirostrum n. gen., the type genus of Inaequalibellirostridae n. fam. The geographic distribution, the stratigraphic range, and affinities of the type species of the new genus, I. pareti (de VERNEUIL, 1850a) from the middle part of the Emsian of the Cantabrian Cordillera (Province of Leon) resulted, among others, in the reassessment of the genus Stenorhynchia BRICE, 1981, and its questionable presence in the Armorican Massif. |
