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Protactinoceratida
Taxonomy
Protactinocerida was named by Chen and Qi (1979). It is not extant.
It was corrected as Protactinoceratida by King and Evans (2019).
It was assigned to Actinoceridea by Crick (1981); to Plectronoceratoidea by Wade (1988); to Cephalopoda by Sepkoski (2002); and to Plectronoceratia by King and Evans (2019).
It was corrected as Protactinoceratida by King and Evans (2019).
It was assigned to Actinoceridea by Crick (1981); to Plectronoceratoidea by Wade (1988); to Cephalopoda by Sepkoski (2002); and to Plectronoceratia by King and Evans (2019).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Protactinocerida Chen and Qi |
| 1981 | Protactinocerida Crick p. 226 |
| 1988 | Protactinocerida Wade |
| 2002 | Protactinocerida Sepkoski |
| 2019 | Protactinoceratida King and Evans p. 76 |
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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.
Or. †Protactinoceratida Chen and Qi 1979
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G. †Benxioceras
G. †Mastoceras
Fm. †Protactinoceratidae Chen 1979
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G. †Protactinoceras
G. †Sinoeremoceras Kobayashi 1933
G. †Wanwanoceras Kobayashi 1933
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004 | |||||
Age range: Cressagian or 486.40000 to 481.10000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cressagian | South Korea (Hwanghae-namdo) | Wanwanoceras peculiare (39398) |