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Beraunia bifrons

Gastropoda - Euomphalina - Oriostomatidae

Taxonomy
Rhabdospira bifrons was named by Perner (1903) [Rhabdospira bifrons Barrande in Perner 1903]. It is not extant. Its type locality is Kosov quarry locality (Dlouhá Hora), Kopanina Fm, which is in a Ludlow deep subtidal limestone in the Kopanina Formation of Czechia. It is the type species of Rhabdospira.

It was recombined as Cyclotropis bifrons by Perner (1907), Perner (1911); it was recombined as Beraunia bifrons by Rohr and Blodgett (2008), Wagner (2023).

Synonymy list
YearName and author
1903Rhabdospira bifrons Perner figs. pl. 75 f. 28-31
1907Cyclotropis bifrons Perner p. 196 figs. pl. 120 f. 1-3
1911Cyclotropis bifrons Perner figs. pl. 235 f. 29-33
2008Beraunia bifrons Rohr and Blodgett p. 55 figs. 2.14 - 2.16
2023Beraunia bifrons Wagner p. 555

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassEogastropoda
orderEuomphalina
superfamilyOriostomatoidea()
familyOriostomatidaeKoken 1896
genusBeraunia
speciesbifrons()

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.

†Beraunia bifrons Perner 1903
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Diagnosis
ReferenceDiagnosis
D. M. Rohr and R. B. Blodgett 2008Discoidal, flat-spired shell with rounded whorls, deep sutures, and a wide umbilicus; ornamentation of at least 15 rounded, spiral threads.
Measurements
No measurements are available
Composition: "calcite"g
Ribbing: minorf
Locomotion: stationaryg
Life habit: epifaunalg
Diet: suspension feederg
Vision: limitedc
Created: 2004-08-14 22:29:29
Modified: 2004-08-15 00:29:29
Source: g = genus, f = family, c = class
References: Knight et al. 1960, Kiessling 2004, Etheridge 1891

Age range: Ludlow or 426.70000 to 422.70000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Ludlow426.7 - 422.7USA (Alaska) Beraunia bifrons (85025)
Ludlow426.7 - 422.7Czechia Rhabdospira bifrons (144741)
Ludlow - Pridoli426.7 - 419.62USA (California) Beraunia bifrons (229634)