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Species / Biculteriala Gratti

Biculteriala Gratti

Stromboidea


Original Description of Biculteriala gratti by Kollmann, 2009:

  • "The whorls possess a broad, strongly inclined subsutural shoulder which is delimited by an angulation. On the shoulder, the collabral ribs are slightly prosocyrt and more accentuated than on the abapical whorl face. They form nodes on the angulation. The last whorl is more than half of the total height. Its subsutural shoulder is broad. Abapically, the whorl face is concave and delimited towards the base by a second angulation. The rostrum is long and strongly bent. The labral wing is broad and possesses two blade-shaped digitations which both point in an adapical direction. The surface of the wing shows a sculpture of indistinct spiral ribs and growth lines. The adapical angulation extends to the upper digitation and the abapical angulation to the lower. The margin of the wing is deeply incised between the digitations, the sides of the incisions form an acute to right angle."

Types: Holotype NHMW 2008z0015/0006, Paratypes 2008z0015/0007-0008

Locus typicus: Pletzach Alm, Kramsach, Tyrol State, Austria

Stratum typicumlower Gosau Group, upper Cretaceous

Biculteriala gratti Kollmann, 2009; "Gosau Kreide", upper Cretaceous; Pletzach Alm, Kramsach, Tyrol State, Austria; Coll. Herbert Gratt

Biculteriala gratti Kollmann, 2009; "Gosau Kreide", upper Cretaceous; Pletzach Alm, Kramsach, Tyrol State, Austria; Coll. Herbert Gratt

Biculteriala gratti Kollmann, 2009; with fragment of Harpodactylus marolti, "Gosau Kreide", Upper Cretaceous; Pletzachalm, Tyrol State, Austria; Coll. Herbert Gratt

Biculteriala gratti Kollmann, 2009; "Gosau Kreide", upper Cretaceous; Pletzach Alm, Kramsach, Tyrol State, Austria; Coll. Herbert Gratt

Biculteriala gratti Kollmann, 2009; "Gosau Kreide", upper Cretaceous; Pletzach Alm, Kramsach, Tyrol State, Austria

Biculteriala gratti Kollmann, 2009; "Gosau Kreide", upper Cretaceous; Pletzach Alm, Kramsach, Tyrol State, Austria

Biculteriala gratti Kollmann, 2009; "Gosau Kreide", upper Cretaceous; Pletzach Alm, Kramsach, Tyrol State, Austria

Alaria granulata (Sowerby, ?); "Gosau kreide", Turonian, upper Cretaceous; Vorderes Sonnenwendjoch, Pletzach Alm, Kramsach, Tyrol State, Austria; Coll. BSPG no. 1895 X B 16

Aporrhais (Helicaulax) striata (Münster, ?); Gosau Kreide; Pletzach Alm, Kramsach, Tyrol State, Austria; 71,4 mm; Ex-coll. O. Hölzl, 1965; Coll. Ulrich Wieneke

Etymology: Named after Herbert Gratt who collected the fossil material and made it available to scientific investigations.

References


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