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Billingsella (Otusia)
Taxonomy
Billingsella (Otusia) was named by Walcott (1905) [Sepkoski's age data: Cm Fran Sepkoski's reference number: 1]. Its type is Orthis sandbergi.
It was reranked as Otusia by Walcott (1912), Williams et al. (2000) and Sepkoski (2002).
It was assigned to Billingsella by Walcott (1905); to Billingsellidae by Walcott (1912); to Eoorthidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
It was reranked as Otusia by Walcott (1912), Williams et al. (2000) and Sepkoski (2002).
It was assigned to Billingsella by Walcott (1905); to Billingsellidae by Walcott (1912); to Eoorthidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
Subtaxa
Species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1905 | Billingsella (Otusia) Walcott p. 246 |
1912 | Otusia Walcott p. 769 |
2000 | Otusia Williams et al. p. 769 |
2002 | Otusia 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.
Subg. †Billingsella (Otusia) Walcott 1905
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†Billingsella (Otusia) sandbergi Winchell 1886
Diagnosis
No diagnoses are available