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Protoryctocephalus
Taxonomy
Protoryctocephalus was named by Chow (1974) [Sepkoski's age data: Cm Tojo-l Sepkoski's reference number: 463]. It is not extant.
It was assigned to Oryctocephalidae by Zhang and Zhou (1985); and to Corynexochida by Sepkoski (2002).
It was assigned to Oryctocephalidae by Zhang and Zhou (1985); and to Corynexochida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Protoryctocephalus Chow |
| 1985 | Protoryctocephalus Zhang and Zhou |
| 2002 | Protoryctocephalus 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.
G. †Protoryctocephalus Chow 1974
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†Protoryctocephalus balangensis Zhao and Yuan 2002
†Protoryctocephalus wuxunensis Zhou 1974
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Hendy et al. 2009, Aberhan et al. 2004, Whittington et al. 1997 | |||||
Age range: base of the Duyunian to the top of the Middle Cambrian or 514.00000 to 497.00000 Ma
Collections (25 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Nangaoian - Duyunian | China (Jiangsu) | P. sp. (127385) | |
| Dyeran | Greenland | P. arcticus (225140) | |
| Duyunian | China (Guizhou) | P. sp. (125076 125150 125154 125158) P. wuxunensis (128072 128074 128077 128078 128079 128081 128082 128083 128084 128086 128087 128088 128089 128090) P. wuxunensis, P. balangensis (128073) | |
| Middle Cambrian | Greenland | P. arcticus (193552 193553 193554 193555) |