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Asteroceras
Taxonomy
Asteroceras was named by Hyatt (1867) [Sepkoski's age data: J Sine-u Sepkoski's reference number: 302]. It is not extant.
It was assigned to Ammonoidea by Sepkoski (2002); to Asteroceratinae by Bremer (1965), Corna and Dommergues (1995), Blau (1998), Meister and Friebe (2003), Geczy and Meister (2007), Howarth (2013); and to Asteroceratidae by Edmunds et al. (2016).
It was assigned to Ammonoidea by Sepkoski (2002); to Asteroceratinae by Bremer (1965), Corna and Dommergues (1995), Blau (1998), Meister and Friebe (2003), Geczy and Meister (2007), Howarth (2013); and to Asteroceratidae by Edmunds et al. (2016).
Synonymy list
| Year | Name and author |
|---|---|
| 1867 | Asteroceras Hyatt |
| 1965 | Asteroceras Bremer |
| 1995 | Asteroceras Corna and Dommergues |
| 1998 | Asteroceras Blau p. 203 |
| 2002 | Asteroceras Sepkoski |
| 2003 | Asteroceras Meister and Friebe |
| 2007 | Asteroceras Geczy and Meister |
| 2013 | Asteroceras Howarth p. 22 |
| 2016 | Asteroceras Edmunds et al. p. 152 |
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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. †Asteroceras Hyatt 1867
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†Asteroceras acceleratum Hyatt 1889
†Asteroceras confusum Spath 1925
†Asteroceras dommerguesi Zaitsev 2023
†Asteroceras margarita Parona 1896
†Asteroceras margaritoides Spath 1925
†Asteroceras obtusum Sowerby 1817
†Asteroceras retusum Reynes 1900
†Asteroceras reynesi Fucini 1903
†Asteroceras saltriensis Parona 1896
†Asteroceras smithi Sowerby 1814
†Asteroceras stellare Sowerby 1815
†Asteroceras suevicum Quenstedt 1884
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 14 | 19.0 | 11.0 | 35.0 | 18.0 | 10.7 | |
| shell diameter | 14 | 71.8 | 32.0 | 133.1 | 78.4 | 37.7 | |
| shell inflation | 14 | 20.6 | 12.0 | 38.0 | 20.0 | 11.4 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Semicostatum to the top of the Obtusum or 199.50000 to 192.90000 Ma
Collections (77 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Jurassic | Canada (British Columbia) | A. saltriense (199633 199634) | |
| Early/Lower Sinemurian | Austria | A. saltriense (218900) | |
| Early/Lower Sinemurian | France (Bourgogne-Franche-Comté) | A. stellare, A. obtusum (234373) | |
| Early/Lower Sinemurian | Hong Kong | A. sp. (137807) | |
| Early/Lower Sinemurian - Late/Upper Sinemurian | Canada (British Columbia) | A. saltriense (198441 198442) | |
| Late/Upper Sinemurian | Chile | A. obtusum (210180) | |
| Late/Upper Sinemurian | Canada (British Columbia) | A. margarita, A. saltriense (208347) A. sp. (53194 53863) | |
| Late/Upper Sinemurian | Portugal | A. sp. (196201) | |
| Late/Upper Sinemurian | Morocco | A. acceleratum (200462 200569 200574) A. margarita (200571 200607) A. sp. (200579) A. stellare (200466 200575 200576 200577 200578) A. stellare, A. margarita (200568) | |
| Late/Upper Sinemurian | Austria | A. retusum (196516) A. sp., A. suevicum (218928) | |
| Late/Upper Sinemurian | United Kingdom (England) | Ammonites stellaris, Ammonites obtusus (227267) A. sp. (105125) | |
| Late/Upper Sinemurian | China (Guangdong) | A. margarita, A. obtusum (59654) A. obtusum (59655) | |
| Obtusum | United Kingdom (Dorset) | A. margaritoides (170337) | |
| Obtusum | China (Guangdong) | A. sp. (7785) | |
| Obtusum | Ukraine (Crimea) | A. dommerguesi (230733) | |
| Obtusum | Hungary (Veszprém Megye) | A. reynesi (81579) A. saltriense (78282) | |
| Obtusum | Hungary | A. saltriense (78797) | |
| Obtusum | France | A. sp., A. confusum (219991) | |
| Obtusum | Germany | A. sp. (189221 189222 189223) | |
| Obtusum | Austria | A. sp. (195016) A. suevicum (189142 189218) | |
| Obtusum | Türkiye | A. blakei (147280 147284 147340) | |
| Obtusum | United Kingdom (Somerset) | A. blakei (179698 179699 179701) A. smithi (179703) A. stellare (159466) | |
| Obtusum | United Kingdom (England) | A. margaritoides (230410) A. obtusum (114638) | |
| Obtusum - Raricostatum | Hungary (Veszprém Megye) | A. saltriense (78210) A. stellare, A. saltriense (78211 78284) | |
| Sinemurian | Austria | A. sp. (196524 218906) | |
| Sinemurian | USA (Nevada) | A. spp. (201221 201226 201234 201236) | |
| Sinemurian | Canada (Yukon) | A. sp. (53164) | |
| Sinemurian | Mexico (Sonora) | A. jamesi (201188 201189) A. ocotilloi (201190) | |
| Sinemurian | United Kingdom (Gloucestershire) | A. obtusum (204148) A. sp. (204149) A. stellare, A. margaritoides, A. marstonense (204147) | |
| Sinemurian | Canada (Alberta) | A. sp. (53275) | |
| Sinemurian | Canada (British Columbia) | A. margarita, A. saltriense (37503) | |
| Sinemurian | Algeria | A. sp., A. margarita (238710) | |
| Sinemurian | USA (California) | A. sp. (38337) | |
| Turneri - Obtusum | France | A. sp. (219990) | |
| Obtusum - Margaritatus | Austria | A. saltriensis (218909) | |
| Semicostatum - Ibex | Hungary | A. sp. (78688) | |
| Sinemurian - Early/Lower Pliensbachian | Austria | A. retusum, A. acceleratum (218908) |