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Miltoceras
Taxonomy
Miltoceras was named by Wiedenmayer (1980).
It was assigned to Polymorphitinae by Thomson and Smith (1992); to Eoderoceratidae by Smith and Tipper (1996); to Coeloceratinae by Geczy and Meister (2007); and to Coeloceratidae by Blau (1998), Hillebrandt (2006), Sarih et al. (2007) and Howarth (2013).
It was assigned to Polymorphitinae by Thomson and Smith (1992); to Eoderoceratidae by Smith and Tipper (1996); to Coeloceratinae by Geczy and Meister (2007); and to Coeloceratidae by Blau (1998), Hillebrandt (2006), Sarih et al. (2007) and Howarth (2013).
Synonymy list
| Year | Name and author |
|---|---|
| 1980 | Miltoceras Wiedenmayer p. 172 |
| 1992 | Miltoceras Thomson and Smith p. 17 |
| 1996 | Miltoceras Smith and Tipper p. 42 |
| 1998 | Miltoceras Blau p. 226 |
| 2006 | Miltoceras Hillebrandt p. 56 |
| 2007 | Miltoceras Geczy and Meister |
| 2007 | Miltoceras Sarih et al. p. 96 |
| 2013 | Miltoceras Howarth p. 45 |
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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. †Miltoceras Wiedenmayer 1980
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†Miltoceras bettonii Fucini 1908
†Miltoceras chilcaense Hillebrandt 2006
†Miltoceras deficiens Wiedenmayer 1980
†Miltoceras furlense Venturi et al. 2007
†Miltoceras gruenae Blau 1998
†Miltoceras involutum Meister et al. 2011
†Miltoceras irregulare Rosenberg 1909
†Miltoceras reductispinosum Hillebrandt 2006
†Miltoceras roseum Wiedenmayer 1980
†Miltoceras sellae Gemmellaro 1884
†Miltoceras taguendoufi El Hariri et al. 1996
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 39 | 6.28 | 1.20 | 21.0 | 5.80 | 5.60 | |
| shell diameter | 39 | 22.2 | 4.00 | 86.0 | 18.0 | 26.6 | |
| shell inflation | 39 | 6.33 | 1.30 | 48.0 | 4.90 | 12.5 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Pliensbachian to the top of the Imlayi or 190.80000 to 186.70000 Ma
Collections (39 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Jurassic | Canada (British Columbia) | M. sp. (199644) | |
| Late/Upper Sinemurian | Austria | M. sp. (196516) | |
| Raricostatum | Austria | M. gruenae (189195) | |
| Pliensbachian | Canada (British Columbia) | M. sellae (33131 33189 33205 33206 33209 33210) | |
| Imlayi | Canada (British Columbia) | M. sellae (32804 32827 33126 33128 33190) M. sp. (32828) | |
| Early/Lower Pliensbachian | Morocco | M. sp. (206629 206630) | |
| Early/Lower Pliensbachian | Canada (British Columbia) | M. sp. (55548 198451) | |
| Jamesoni | Argentina | M. chilcaense (181795) M. sp. A, M. chilcaense, M. reductispinosum (181796) | |
| Jamesoni | Tunisia | M. sellae, Pseudoskirroceras deficiens, M. irregulare, Pseudoskirroceras bettonii (170522) | |
| Jamesoni | Morocco | M. sellae, M. taguendoufi, M. roseum, M. bettonii (148938) M. sp. (148873) M. sp., M. sellae, M. taguendoufi, M. roseum, M. involutum (148874 148947) M. taguendoufi (197654 197992) | |
| Jamesoni | Argentina (Mendoza) | M. sp., M. sellae (42771) | |
| Jamesoni | United Kingdom (England) | M. sp. (33361) | |
| Jamesoni | Hungary | M. deficiens (80152) M. sellae (80147 80154 80160 80161) M. sp. (80148 80151) | |
| Jamesoni | Hungary (Veszprém Megye) | M. sellae (81555) | |
| Jamesoni | Italy | M. furlense (147083) |