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Probactrotheca
Taxonomy
Probactrotheca was named by Valent et al. (2012).
It was assigned to Orthothecida by Valent et al. (2012).
It was assigned to Orthothecida by Valent et al. (2012).
Species
Synonymy list
Year | Name and author |
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2012 | Probactrotheca Valent et al. pp. 244 - 245 |
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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. †Probactrotheca Valent et al. 2012
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†Probactrotheca briketa Valent et al. 2012
Diagnosis
Reference | Diagnosis | |
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M. Valent et al. 2012 | Medium sized orthocone conch with a small angle of divergence, and trapezoid cross-section. Ventral side concave; dorsal side divided longitudinally into three parts: the middle part with slightly raised rounded keel on the mould and with slightly vaulted lateral shoulders. The boundaries between these three parts are rounded, as is the junction with the ventral side. The ventral apertural margin is straight; the dorsal margin is slightly arched adapically cut out. The sculpture of the conch consists of fine growth-lines.
The flat operculum is sub-trapezoid in outline. Its inner side bears narrow broadly diverging cardinal processes with subparallel edges. The lower walls are distinct. Plicae are well developed on the outer side; the slightly convex triangulum is distinct. The sculpture of the operculum con- sists of fine distinct growth-lines. |
Measurements
No measurements are available
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Source: p = phylum | |||||
Reference: Hendy et al. 2009 |
Collections
No collection or age range data are available