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Trigonotreta cracovensis
Taxonomy
Grantonia cracovensis was named by Wass (1966).
It was recombined as Trigonotreta cracovensis by Parfrey (1986), Waterhouse (1987) and Waterhouse (2004).
It was recombined as Trigonotreta cracovensis by Parfrey (1986), Waterhouse (1987) and Waterhouse (2004).
Synonymy list
| Year | Name and author |
|---|---|
| 1966 | Grantonia cracovensis Wass |
| 1986 | Trigonotreta cracovensis Parfrey p. 60 fig. 2.4 |
| 1987 | Trigonotreta cracovensis Waterhouse p. 16 figs. Pl 3, figs 6-13,15-17 |
| 2004 | Trigonotreta cracovensis Waterhouse |
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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.
†Trigonotreta cracovensis Wass 1966
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. B. Waterhouse 1987 | Large shells bearing high angular plicae and deep angular interspaces, well defined costae, moderately numerous in anterior sulcus. Median costa high especially on dorsal valve, concentric ornament only moderately defined, lateral margins may be subalate; muscle field transverse to subquadrate, not elongate. |