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Plectoceras
Taxonomy
Plectoceras was named by Hyatt (1884) [Sepkoski's age data: O Aren-l O Ashg Sepkoski's reference number: 298,524]. It is not extant.
It was assigned to Plectoceratidae by Teichert et al. (1964), Crick (1981), Frey (1995); and to Barrandeocerida by Sepkoski (2002).
It was assigned to Plectoceratidae by Teichert et al. (1964), Crick (1981), Frey (1995); and to Barrandeocerida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1884 | Plectoceras Hyatt p. 268 |
1964 | Plectoceras Teichert et al. p. 374 |
1981 | Plectoceras Crick p. 229 |
1995 | Plectoceras Frey p. P36 |
2002 | Plectoceras 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. †Plectoceras Hyatt 1884
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†Plectoceras carletonense Foerste 1933
†Plectoceras jason Billings 1859
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class | |||||
References: Aberhan et al. 2004, Kiessling 2004 |
Age range: base of the Middle Ordovician to the top of the Blackriveran or 471.30000 to 449.60000 Ma
Collections (22 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Canadian | USA (Colorado) | P. manitouense (216979) | |
Arenig | China (XinJiang) | P. sp. (20806) | |
Chazyan | USA (New York) | P. jason (172317 172323 172327 172331) P. jasoni (42803) | |
Middle Ordovician - Late/Upper Ordovician | Canada (Nunavut) | P. sp. (24222) | |
Llanvirn | China (Manchuria) | P. ohtakai (56135) | |
Ashbyan | USA (Virginia) | P. bondi (33544 33545 33546 33547) | |
Ashbyan | USA (Tennessee) | P. bondi (5327) | |
Blackriveran | USA (Minnesota) | P. robertsoni, P. occidentale (23690) | |
Blackriveran | USA (Illinois, Iowa, Wisconsin) | P. occidentale (23758) P. robertsoni, P. occidentale (23753 23756 23757) | |
Blackriveran - Rocklandian | USA (Minnesota) | P. robertsoni, P. occidentale (23691) | |
Rocklandian | USA (Kentucky) | P. carletonense (87737) | |
Rocklandian - Kirkfieldian | United Kingdom (Northern Ireland) | P. sp. (89157) |