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Derwentia
Taxonomy
Derwentia was named by Cosgriff (1974). Its type is Derwentia warreni.
It was assigned to Indobrachyopidae by Cosgriff and Zawiskie (1979); to Derwentiidae by Schoch and Milner (2000); and to Rhytidosteidae by Cosgriff (1974), Warren and Black (1985), Carroll (1988), Marsicano and Warren (1998), Poropat et al. (2023).
It was assigned to Indobrachyopidae by Cosgriff and Zawiskie (1979); to Derwentiidae by Schoch and Milner (2000); and to Rhytidosteidae by Cosgriff (1974), Warren and Black (1985), Carroll (1988), Marsicano and Warren (1998), Poropat et al. (2023).
Species
D. warreni (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Derwentia Cosgriff |
| 1979 | Derwentia Cosgriff and Zawiskie p. 23 |
| 1985 | Derwentia Warren and Black |
| 1988 | Derwentia Carroll |
| 1998 | Derwentia Marsicano and Warren p. 152 |
| 2000 | Derwentia Schoch and Milner p. 84 |
| 2023 | Derwentia Poropat et al. p. 141 |
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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
Measurements
No measurements are available
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| Source: subo = suborder, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Uhen 2004, Carroll 1988, Hendy et al. 2009 | |||||