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Rhactorthis
Taxonomy
Rhactorthis was named by Williams (1963). Its type is Rhactorthis crassa.
It was assigned to Rhactorthinae by Wright (1964) and Owen and Harper (1982); to Rhactorthidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
It was assigned to Rhactorthinae by Wright (1964) and Owen and Harper (1982); to Rhactorthidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
Species
R. crassa (type species)
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1963 | Rhactorthis Williams |
| 1964 | Rhactorthis Wright |
| 1982 | Rhactorthis Owen and Harper |
| 2000 | Rhactorthis Williams et al. p. 778 |
| 2002 | Rhactorthis 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.
Diagnosis
No diagnoses are available