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Isorthis (Arcualla)
Taxonomy
Arcualla was named by Walmsley and Boucot (1975). Its type is Orthis (Dalmanella) arcuaria.
It was reranked as Isorthis (Arcualla) by Williams et al. (2000).
It was assigned to Isorthis by Williams et al. (2000); and to Orthida by Sepkoski (2002).
It was reranked as Isorthis (Arcualla) by Williams et al. (2000).
It was assigned to Isorthis by Williams et al. (2000); and to Orthida by Sepkoski (2002).
Species lacking formal opinion data
Synonymy list
Year | Name and author |
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1975 | Arcualla Walmsley and Boucot |
2000 | Isorthis (Arcualla) Williams et al. p. 788 |
2002 | Arcualla 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. †Isorthis (Arcualla) Walmsley and Boucot 1975
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†Isorthis (Arcualla) arcuaria Hall and Clarke 1892
†Isorthis (Arcualla) boreaina Zhang 1989
†Isorthis (Arcualla) microscapha Johnson et al. 1976
Diagnosis
No diagnoses are available