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Roadoceras
Taxonomy
Roadoceras was named by Zhou (1985). It is not extant.
It was assigned to Pseudogastrioceratidae by Leonova (2002); to Prolecanitida by Tazawa et al. (2005); and to Pseudogastrioceratinae by Korn (2006), Furnish et al. (2009), Korn et al. (2016).
It was assigned to Pseudogastrioceratidae by Leonova (2002); to Prolecanitida by Tazawa et al. (2005); and to Pseudogastrioceratinae by Korn (2006), Furnish et al. (2009), Korn et al. (2016).
Species
Species lacking formal opinion data
Entered
by L. Fall (authorized by T. Olszewski) on 2006-08-18; modified by M. Clapham on 2025-10-31
Synonymy list
| Year | Name and author |
|---|---|
| 1985 | Roadoceras Zhou p. 195 |
| 2002 | Roadoceras Leonova |
| 2005 | Roadoceras Tazawa et al. |
| 2006 | Roadoceras Korn |
| 2009 | Roadoceras Furnish et al. p. 172 |
| 2016 | Roadoceras Korn et al. p. 852 |
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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. †Roadoceras Zhou 1985
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†Roadoceras beedei Plummer and Scott 1937
†Roadoceras bellum Zhou 1985
†Roadoceras chinense Liang 1981
†Roadoceras haacki Miller 1944
†Roadoceras hubeiense Xu 1977
†Roadoceras plicatum Liang 1981
†Roadoceras prodromus Ruzhentsev 1976
†Roadoceras roadense Böse 1919
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Invalid names: Pseudogastrioceras globulosissimum Plummer and Scott 1937 [synonym]
†Roadoceras sinense Zhou 1987
†Roadoceras tumidum Liang 1981
†Roadoceras xizangense Liang 1977
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 33 | 11.7 | 2.40 | 33.0 | 15.6 | 10.5 | |
| shell diameter | 33 | 32.2 | 6.20 | 105.3 | 36.4 | 24.3 | |
| shell inflation | 33 | 7.42 | 2.40 | 16.1 | 9.50 | 4.50 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Kungurian to the top of the Wuchiapingian or 283.30000 to 254.14000 Ma
Collections (41 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian | Russian Federation | R. subroadense (186620) | |
| Roadian | China (Gansu) | Uraloceras chinense, Uraloceras plicatum, Uraloceras tumidum, Uraloceras pokolbinense (150431) | |
| Roadian | USA (Texas) | Gastrioceras roadense (113182 128591) Pseudogastrioceras roadense (43553 101783 113196 113197 113199 113206 113236 131118) | |
| Roadian | Mexico (Coahuila) | Pseudogastrioceras roadense (63055 63057) | |
| Roadian | USA (Alaska) | Pseudogastrioceras roadense (115733) | |
| Roadian - Wordian | China (Hubei) | Altudoceras beedei (124011) | |
| Roadian - Wordian | USA (Texas) | Pseudogastrioceras roadense (106147) | |
| Wordian | China (Zhejiang) | Altudoceras roadense (97115) | |
| Wordian | USA (Texas) | Pseudogastrioceras beedei (113176 113248) Pseudogastrioceras globulosissimum (131476) Pseudogastrioceras roadense (105515 113221 113222 113261) Pseudogastrioceras roadense, Pseudogastrioceras beedei (105514) | |
| Wordian | Mexico (Guerrero) | Pseudogastrioceras roadense (232710) | |
| Wordian | Mexico (Coahuila) | Pseudogastrioceras roadense (62916 62921) R. roadense (275659 275661) | |
| Wordian - Capitanian | China (Nei Mongol) | Altudoceras roadense (107792 107797) | |
| Capitanian | Russian Federation | Altudoceras prodromus (86042) | |
| Capitanian | Japan | R. sp. (62292) | |
| Capitanian | Mexico (Coahuila) | Pseudogastrioceras haacki (63100) Pseudogastrioceras haacki, Pseudogastrioceras roadense (62907) | |
| Capitanian | USA (Texas) | Paragastrioceras beedei (113230) Pseudogastrioceras beedei (113231) | |
| Wuchiapingian | China (Xizang) | R. xizangense (42454) Uraloceras xizangense (121591) |