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Eoorthis
Taxonomy
Eoorthis was named by Walcott (1908) [Sepkoski's age data: Cm Dres-u O Trem Sepkoski's reference number: 1,16,538]. Its type is Orthis remnicha. It is the type genus of Eoorthidae.
It was assigned to Billingsellidae by Henningsmoen (1958); to Eoorthidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
It was assigned to Billingsellidae by Henningsmoen (1958); to Eoorthidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1908 | Eoorthis Walcott p. 102 |
| 1958 | Eoorthis Henningsmoen |
| 2000 | Eoorthis Williams et al. p. 766 |
| 2002 | Eoorthis 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.
G. †Eoorthis Walcott 1908
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†Eoorthis indianola Walcott 1905
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Invalid names: Eoorthis laeviusculus Walcott 1905 [synonym], Eoorthis wichitaensis Walcott 1905 [synonym]
†Eoorthis newberryi Walcott 1908
†Eoorthis remnicha Winchell 1886
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†Orthis (Plectorthis) remnicha sulcata Walcott 1905
†Orthis (Plectorthis) remnicha texana Walcott 1905
†Orthis (Plectorthis) remnicha winfieldensis Walcott 1905
Invalid names: Eoorthis texana Walcott 1912 [synonym]
†Eoorthis sabus Walcott 1924
†Eoorthis thyone Walcott 1908
†Eoorthis zeno Walcott 1908
Diagnosis
No diagnoses are available