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Megayoldia
Taxonomy
Megayoldia was named by Verrill and Bush (1897) [Sepkoski's age data: T Ol R Sepkoski's reference number: 816]. It is extant.
It was reranked as Yoldia (Megayoldia) by Zhidkova (1968) and Moore (1983).
It was assigned to Yoldia by Zhidkova (1968) and Moore (1983); to Yoldiinae by Coan et al. (2000); to Nuculoida by Sepkoski (2002); and to Yoldiidae by Mikkelsen (2006).
It was reranked as Yoldia (Megayoldia) by Zhidkova (1968) and Moore (1983).
It was assigned to Yoldia by Zhidkova (1968) and Moore (1983); to Yoldiinae by Coan et al. (2000); to Nuculoida by Sepkoski (2002); and to Yoldiidae by Mikkelsen (2006).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1897 | Megayoldia Verrill and Bush |
| 1968 | Yoldia (Megayoldia) Zhidkova p. 78 |
| 1983 | Yoldia (Megayoldia) Moore p. A26 |
| 2000 | Megayoldia Coan et al. pp. 109, 114 |
| 2002 | Megayoldia Sepkoski |
| 2006 | Megayoldia Mikkelsen |
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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. Megayoldia Verrill and Bush 1897
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Subg. †Megayoldia (Hataiyoldia)
Subg. Megayoldia (Megayoldia) Verrill and Bush 1897
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†Megayoldia (Megayoldia) thraciaeformis Storer 1838
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Invalid names: Microyoldia ochotensis Scarlato 1981 [synonym], Nucula groenlandica Posselt 1898 [synonym], Nucula navicularis Couthouy 1831 [synonym], Portlandia dalli Krause 1885 [synonym], Yoldia angularis Möller 1842 [synonym], Yoldia regularis Verrill 1884 [synonym], Yoldia scapha Yokoyama 1926 [synonym], Yoldia secunda Dall 1916 [synonym], Yoldia suavis Konova 1984 [synonym]
Subg. †Megayoldia (Portlandella) Stewart 1930
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†Megayoldia (Portlandella) pilvoensis Slodkewitsch 1938
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Invalid names: Yoldia obtusata Kristofovich 1984 [synonym]
†Megayoldia (Portlandella) watasei Kanehara 1937
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Invalid names: Yoldia deformis Kogan 1939 [synonym]
†Portlandia (Portlandella) euthynta Woodring 1973
†Portlandia (Portlandella) reagani Dall 1922
Yoldia (Megayoldia) martyria Dall 1897
Yoldia (Megayoldia) montereyensis Dall 1893
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Invalid names: Megayoldia kamchatkana Scarlato 1981 [synonym], Yoldia beringiana Dall 1916 [synonym]
Diagnosis
No diagnoses are available