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Opisthias
Taxonomy
Opisthias was named by Gilmore (1909). Its type is Opisthias rarus.
It was assigned to Sphenodontidae by Gilmore (1909), Hay (1930), Carroll (1988); to Rhynchocephalia by Rauhut et al. (2012); to Opisthodontia by Apesteguía and Novas (2003), Apesteguia et al. (2012), Reynoso and Cruz (2014), Cau et al. (2014), Herrera-Flores et al. (2018), Hsiou et al. (2019); and to Sphenodontia by Allain et al. (2022).
It was assigned to Sphenodontidae by Gilmore (1909), Hay (1930), Carroll (1988); to Rhynchocephalia by Rauhut et al. (2012); to Opisthodontia by Apesteguía and Novas (2003), Apesteguia et al. (2012), Reynoso and Cruz (2014), Cau et al. (2014), Herrera-Flores et al. (2018), Hsiou et al. (2019); and to Sphenodontia by Allain et al. (2022).
Species
O. rarus (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Opisthias Gilmore pp. 35-36 fig. 1 |
| 1930 | Opisthias Hay p. 135 |
| 1988 | Opisthias Carroll |
| 2003 | Opisthias Apesteguía and Novas |
| 2012 | Opisthias Apesteguia et al. |
| 2012 | Opisthias Rauhut et al. |
| 2014 | Opisthias Cau et al. |
| 2014 | Opisthias Reynoso and Cruz p. 53 |
| 2018 | Opisthias Herrera-Flores et al. |
| 2019 | Opisthias Hsiou et al. |
| 2022 | Opisthias Allain et al. |
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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