Schafbergia Gatto and Monari, 2010

Gründel, Joachim & Nützel, Alexander, 2013, Evolution and classification of Mesozoic mathildoid gastropods, Acta Palaeontologica Polonica 58 (4), pp. 803-826 : 814-815

publication ID

https://doi.org/ 10.4202/app.2012.0052

persistent identifier

https://treatment.plazi.org/id/99201644-FFBB-3A58-FCF9-F96CFD50FD24

treatment provided by

Felipe

scientific name

Schafbergia Gatto and Monari, 2010
status

 

Genus Schafbergia Gatto and Monari, 2010 View in CoL

Fig. 7D View Fig .

Type species: Chemnitzia crenata Stoliczka, 1861 , original designation; Pliensbachian ; Austria .

Included species: Chemnitzia crenata Stoliczka, 1861 , Pliensbachian;? Chemnitzia turgida Stoliczka, 1861 , Sinemurian; Proacirsa (Schafbergia) zirettoensis Gatto and Monari,2010 , Sinemurian–Pliensbachian.

Emended diagnosis.—Shell shape similar to that of Proacirsa ; protoconch unknown; early teleoconch whorls ornamented with several spiral ribs on the abapical whorl portion which are intersected by numerous axial ribs; intersections of axial and spiral ribs nodular; axial ribs reduced after a few whorls; mature teleoconch whorls with numerous weak spiral ribs which are somewhat more distinct in the abapical portion of the whorls; base with numerous somewhat broadened spiral ribs.

Remarks.— Proacirsa differs in having three spiral ribs which are distributed over the entire whorl face and in having fewer axial ribs in the early teleoconch whorls, in having rather broad spiral ribs on the base and a smooth whorl face in mature teleoconch whorls.

Stratigraphic and geographic range.—Sinemurian to Pliensbachian, Early Jurassic; Italy, Austria, Hungary.

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