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Volborthella
Taxonomy
Volborthella is a genus. It is not extant. Its type is Volborthella tenuis.
It was synonymized subjectively with Salterella by Yochelson (1983).
It was assigned to Volborthellidae by Yochelson (1977); to Volborthellida by Sepkoski (2002); to Salterellidae by Yochelson and Kisselev (2003); and to Metazoa by Fatka (2004).
It was synonymized subjectively with Salterella by Yochelson (1983).
It was assigned to Volborthellidae by Yochelson (1977); to Volborthellida by Sepkoski (2002); to Salterellidae by Yochelson and Kisselev (2003); and to Metazoa by Fatka (2004).
Species
V. tenuis (type species), V. titanius
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Campitius Firby and Durham p. 1112 |
| 1977 | Volborthella Yochelson p. 451 |
| 2002 | Volborthella Sepkoski |
| 2003 | Volborthella Yochelson and Kisselev p. 10 |
| 2004 | Volbothella Fatka |
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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.
G. †Volborthella
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†Volborthella tenuis Schmidt 1888
†Volborthella tenuis bohemicus Prantl 1947
†Volborthella titanius Firby and Durham 1974
Invalid names: Campitius Firby and Durham 1974 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. B. Firby and J. W. Durham 1974 (Campitius) | With the characters of the species. [ radula with large, numerous gently arcuate conical denticles having a slightly concave base, apparently arranged in transverse rows of about 9, the most com- plete specimens indicat,e that there were at least 40 rows disposed along an elongate, probably fleshy, ribbon. Mineralogically the denticles are composed of grains of ilmenite arranged in cyclic bands within a quartz (prob- ably originally opal) matrix. The available denticles vary in shape from short, wide based cones (3.0 mm by 3.5 mm) to long thin based ones (3.14 by 0.96 mm); within each organized specimen the denticles vary only slightly in size, the more extreme shapes are of isolated denticles; some have only a slightly hooked tip; others are more strongly arcuate.] |