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Genuspira
Taxonomy
Bembexia (Genuspira) was named by Tyler (1965). Its type is Genuspira nodosa.
It was reranked as Genuspira by Blodgett et al. (1999) and Wagner (2023).
It was assigned to Bembexia by Tyler (1965); to Eotomariinae by Blodgett et al. (1999); and to Gosseletininae by Wagner (2023).
It was reranked as Genuspira by Blodgett et al. (1999) and Wagner (2023).
It was assigned to Bembexia by Tyler (1965); to Eotomariinae by Blodgett et al. (1999); and to Gosseletininae by Wagner (2023).
Subtaxa
G. nodosa (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1965 | Bembexia (Genuspira) Tyler p. 343 |
| 1999 | Genuspira Blodgett et al. |
| 2023 | Genuspira Wagner p. G314 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. H. Tyler 1965 | Low- to moderately high-spired, turbiniform shells with narrow slit extending about one-eighth the circumference of body whorl and generating typically non-lunulated, shallow selenizone bordered by pronounced cords or threads, lower thread forming whorl pe-riphery; sutures sharply incised; whorl profile geniculated by pronounced shoulder creating ramp occupying about two-thirds distance be-tween suture and selenizone; peripheral angu-lation in several specimens slight, extending less than one millimeter below lower thread of selenizone; basal part of whorl evenly rounded; anomphalus; small columellar inductura present; growth lines moderately prosocline above seleni-zone and very slightly so below; collabral ornament absent or faint and spiral ornament restricted to upper whorl surface, typically con-sisting of single cord or row of nodes immediately below suture. |
Measurements
No measurements are available
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| Source: f = family, o = order | |||||
| References: Hendy 2009, Bambach et al. 2007 | |||||