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Steinmanella (Splenditrigonia)
Taxonomy
Steinmanella (Splenditrigonia) was named by Leanza (1993). Its type is Trigonia splendida.
It was reranked as Splenditrigonia by Cooper and Leanza (2017).
It was assigned to Steinmanella by Leanza (1993); and to Steinmanellinae by Cooper and Leanza (2017).
It was reranked as Splenditrigonia by Cooper and Leanza (2017).
It was assigned to Steinmanella by Leanza (1993); and to Steinmanellinae by Cooper and Leanza (2017).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1993 | Steinmanella (Splenditrigonia) Leanza p. 43 |
| 2017 | Splenditrigonia Cooper and Leanza |
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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.
Subg. †Steinmanella (Splenditrigonia) Leanza 1993
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. A. Leanza 1993 | Shell large, subquadrate to subrectangular.
Flank ornamented by nearly straight, tuberculate costae, arranged in narrow or wide bundles. Area wide, strongly tuberculated or with lines of beads. Marginal carina tuberculated in the umbonal region, or distinctly demarcated by different ornamentation of flank and area. Escutcheon wide, irregularly tuberculated. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Aberhan et al. 2004 | |||||
Age range: Late/Upper Tithonian or 145.06000 to 143.10000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Tithonian | Argentina (Catán Lil) | Steinmanella haupti, Steinmanella erycina (240833) | |
| Late/Upper Tithonian | Argentina (Zapala) | Steinmanella haupti (240830) |