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Bipulvina

Tergomya - Tryblidiida - Tryblidiidae

Taxonomy
Bipulvina was named by Yochelson (1958) [Sepkoski's age data: O Trem Sepkoski's reference number: 1]. It is not extant. Its type is Bipulvina croftsae.

It was assigned to Tryblidiinae by Yochelson (1958) and Knight and Yochelson (1960); to Bipulvinidae by Starobogatov (1970); to Tryblidiidae by Runnegar and Jell (1976); and to Tryblidiida by Sepkoski (2002).

Synonymy list
YearName and author
1958Bipulvina Yochelson
1960Bipulvina Knight and Yochelson p. 78
1970Bipulvina Starobogatov p. 301
1976Bipulvina Runnegar and Jell p. 119
2002Bipulvina Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
RankNameAuthor
phylumMollusca
classTergomya
orderTryblidiida()
superfamilyTryblidioidea()
familyTryblidiidae
genusBipulvina

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
E. L. Yochelson 1958Low, spoon-shaped monoplacophorans having the interior of the dorsum flattened for more than half of its length and set off from the anterior and posterior slopes; apex strongly anterior, just projecting over apertural margin ; five pairs of subtriangular lateral muscle scars located relatively high on lateral slopes, with some additional markings on anterior slope; ornament unknown; interior of shell with two furrows parallel to lines of muscle scars.