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Beraunia docens

Gastropoda - Euomphalina - Oriostomatidae

Taxonomy
Cyclotropis docens was named by Perner (1903) [Barrande in Perner 1903]. It is a 3D body fossil. Its type locality is Kosov quarry locality (Dlouhá Hora), Kopanina Fm, which is in a Ludlow deep subtidal limestone in the Kopanina Formation of the Czech Republic. It is the type species of Beraunia, Cyclotropis, Eucyclotropis.

It was recombined as Euomphalus (Cyclotropis) docens by Spitz (1907); it was recombined as Eucyclotropis docens by Cossmann (1909); it was recombined as Beraunia docens by Knight (1937), Knight (1941) and Wagner (2017).

Synonymy list
YearName and author
1903Cyclotropis docens Perner figs. pl. 77 f. 1-4
1907Cyclotropis docens Perner pp. 193 - 194
1907Euomphalus (Cyclotropis) docens Spitz pp. 138 - 139 figs. pl. 13 f. 10a-b
1909Eucyclotropis docens Cossmann p. 27
1937Beraunia docens Knight p. 711
1941Beraunia docens Knight pp. 55 - 56 figs. Plate 80, figures 2a-b
2017Beraunia docens Wagner p. 558

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
subclassEogastropoda
orderEuomphalina
superfamilyOriostomatoidea()
familyOriostomatidaeKoken 1896
genusBeraunia
speciesdocens()

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
J. B. Knight 1941Rather large, discoidal gastropods, without sinus or slit and with a calcareous operculum; sutures deep, above and below; whorl profile subcircular; spire slightly elevated, and trochiform for the first three or four (nepionic and neanic) whorls, concave and similar to the base at all later stages; base widely and shallowly phaneromphalous; aperture circular, the columellar lip slightly thickened; a parietal inductura present at the narrow zone of contact of the whorls; outer lip without any sinuosities; operculum heavy, calcareous, marked by numerous strong, rounded costae with narrow Y-shaped interspaces, the costae being either concentric or spiral, it is impossible to tell which; ornamentation a series of narrow, low, rounded, revolving costae with wide, flat interspaces and obscure, irregularly spaced growth lines; shell distinctly double-layered. The holotype measures about 43 mm. in diameter, its height being only the greatest diameter of the final whorl, about 18 mm.