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Yaadia
Taxonomy
Yaadia was named by Crickmay (1930) [Sepkoski's age data: K Barr K Maes Sepkoski's reference number: 991]. It is not extant. It is considered to be a form taxon. Its type is Trigonia lewisagassizi.
It was assigned to Trigoniidae by Cox (1952); and to Yaadiinae by Sepkoski (2002) and Cooper and Leanza (2017).
It was assigned to Trigoniidae by Cox (1952); and to Yaadiinae by Sepkoski (2002) and Cooper and Leanza (2017).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1930 | Yaadia Crickmay |
| 1952 | Yaadia Cox |
| 2002 | Yaadia Sepkoski |
| 2017 | Yaadia 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.
G. †Yaadia Crickmay 1930
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Subg. †Yaadia (Leptotrigonia)
†Yaadia branti Saul 1978
†Yaadia californiana Packard 1921
†Yaadia jonesi Saul 1978
†Yaadia leana Gabb 1900
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Invalid names: Trigonia colusaensis Anderson 1958 [synonym], Trigonia wheelerensis Anderson 1958 [synonym]
†Yaadia lewisagassizi Crickmay 1930
†Yaadia pinea Saul 1978
†Yaadia robusta Saul 1978
†Yaadia romanovskii Archangelski 1900
†Yaadia tryoniana Gabb 1864
Diagnosis
No diagnoses are available