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Trigyra
Taxonomy
Trigyra was named by Raymond (1908) [Sepkoski's age data: O Llde Sepkoski's reference number: 1,615]. It is not extant.
It was assigned to Cyrtolitidae by Knight et al. (1960); to Sinuitinae by Horný (1963); to Bucanellidae by Starobogatov (1970); to Sinuitidae by Runnegar and Jell (1976); and to Cyrtonellida by Sepkoski (2002).
It was assigned to Cyrtolitidae by Knight et al. (1960); to Sinuitinae by Horný (1963); to Bucanellidae by Starobogatov (1970); to Sinuitidae by Runnegar and Jell (1976); and to Cyrtonellida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1908 | Trigyra Raymond |
| 1960 | Trigyra Knight et al. p. 174 |
| 1963 | Trigyra Horný |
| 1970 | Trigyra Starobogatov p. 300 |
| 1976 | Trigyra Runnegar and Jell p. 121 |
| 2002 | Trigyra Sepkoski |
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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
No diagnoses are available