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Tropidoceras
Taxonomy
Tropidoceras was named by Hyatt (1867) [Sepkoski's age data: J Plie-l Sepkoski's reference number: 302]. It is not extant.
It was assigned to Acanthopleuroceratinae by Bremer (1965), Frebold (1970), Braga and Rivas (1985), Thomson and Smith (1992), Smith and Tipper (1996) and Sepkoski (2002); to Acanthopleuroceratidae by Meister and Friebe (2003) and Hillebrandt (2006); and to Tropidoceratinae by Howarth (2013).
It was assigned to Acanthopleuroceratinae by Bremer (1965), Frebold (1970), Braga and Rivas (1985), Thomson and Smith (1992), Smith and Tipper (1996) and Sepkoski (2002); to Acanthopleuroceratidae by Meister and Friebe (2003) and Hillebrandt (2006); and to Tropidoceratinae by Howarth (2013).
Species
T. actaeon, T. atuelense, T. calliplocoides, T. calliplocum (syn. T. sparsicosta, T. stefanii), T. demonense, T. ellipticum, T. erythraeum, T. flandrini (syn. Harpoceras zancleanum), T. frischmanni, T. futtereri, T. hamulatum, T. heterogeneum, T. masseanum (syn. T. lineatum), T. mediterraneum (syn. Harpoceras galatense), T. rotundum, T. rursicosta, T. semilaevis, T. stahli, T. stahliforme, T. zitteli
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1867 | Tropidoceras Hyatt |
| 1965 | Tropidoceras Bremer |
| 1970 | Tropidoceras Frebold |
| 1985 | Tropidoceras Braga and Rivas p. 571 |
| 1992 | Tropidoceras Thomson and Smith p. 19 |
| 1996 | Tropidoceras Smith and Tipper p. 37 |
| 2002 | Eremiticeras Faraoni et al. |
| 2002 | Tropidoceras Sepkoski |
| 2003 | Tropidoceras Meister and Friebe |
| 2006 | Tropidoceras Hillebrandt p. 87 |
| 2013 | Tropidoceras Howarth p. 55 |
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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. †Tropidoceras Hyatt 1867
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†Acanthopleuroceras actaeon aegion d'Orbigny 1844
†Tropidoceras actaeon d'Orbigny 1844
†Tropidoceras atuelense Hillebrandt 2006
†Tropidoceras calliplocoides Spath 1923
†Tropidoceras calliplocum Gemmellaro 1884
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Invalid names: Tropidoceras sparsicosta Spath 1923 [synonym], Tropidoceras stefanii Fucini 1899 [synonym]
†Tropidoceras demonense Gemmellaro 1884
†Tropidoceras ellipticum Sowerby 1815
†Tropidoceras erythraeum Gemmellaro 1884
†Tropidoceras flandrini Dumortier 1869
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†Tropidoceras flandrini densicosta Futterer 1893
†Tropidoceras flandrini flandrini Dumortier 1869
Invalid names: Harpoceras zancleanum Gemmellaro 1884 [synonym]
†Tropidoceras flandrini obtusum Futterer 1983
†Tropidoceras frischmanni Oppel 1862
†Tropidoceras futtereri Spath 1923
†Tropidoceras hamulatum Hillebrandt 2006
†Tropidoceras heterogeneum Meister et al. 2011
†Tropidoceras masseanum d'Orbigny 1844
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Invalid names: Tropidoceras lineatum Spath 1923 [synonym]
†Tropidoceras mediterraneum Gemmellaro 1884
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Invalid names: Harpoceras galatense Gemmellaro 1884 [synonym]
†Tropidoceras rotundum Futterer 1893
†Tropidoceras rursicosta Buckman 1918
†Tropidoceras semilaevis Fucini 1899
†Tropidoceras stahli Oppel 1856
†Tropidoceras stahliforme Rakús and Guex 2002
†Tropidoceras zitteli Fucini 1899
Invalid names: Eremiticeras Faraoni et al. 2002 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| diameter | 1 | 24.0 | - | - | - | - | |
| shell height | 65 | 18.3 | 4.00 | 80.0 | 19.8 | 14.4 | |
| shell diameter | 65 | 51.5 | 11.4 | 240.0 | 54.0 | 40.7 | |
| shell inflation | 65 | 23.6 | 5.40 | 95.0 | 23.5 | 17.3 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Whiteavesi or 189.60000 to 186.70000 Ma
Collections (247 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Jurassic | Canada (British Columbia) | T. actaeon (199611 199641 199643 199673 199683) | |
| Sinemurian - Early/Lower Pliensbachian | Austria | T. sp. (218907) | |
| Late/Upper Sinemurian - Early/Lower Pliensbachian | Hungary | T. sp., T. erythraeum (78630) | |
| Late/Upper Sinemurian - Early/Lower Pliensbachian | Turkey | T. actaeon, T. masseanum (218661) T. masseanum, T. calliplocum, T. ellipticum (218660) | |
| Late/Upper Sinemurian - Late/Upper Pliensbachian | France | T. sp. (205748 205749) | |
| Late/Upper Sinemurian - Late/Upper Pliensbachian | Austria | T. sp. (218910) T. sp., T. erythraeum, T. masseanum, T. rotundum (218932) T. sp., T. stahli (218911) | |
| Obtusum - Margaritatus | Austria | T. sp., T. masseanum (218909) | |
| Raricostatum - Davoei | Hungary | T. sp. (78690) | |
| Raricostatum - Ibex | Turkey | T. demonense (147339) | |
| Pliensbachian | Chile (Chañaral) | T. sp. (223831) | |
| Pliensbachian | Argentina (Mendoza) | T. sp. (33721 33722) | |
| Pliensbachian | Canada (British Columbia) | T. actaeon (33209 33226 33228 33231) T. actaeon, T. erythraeum (33204) T. actaeon, T. masseanum (33216 33223 33227 33230 33232 33236) T. flandrini, T. erythraeum (33131) T. masseanum (33141 33234 33235 33238 33246 33249) T. n. sp. 1, T. actaeon (33242) T. n. sp. 2 (33210) T. n. sp. 2, T. masseanum (33189) T. sp. 1, T. actaeon (33221) T. sp. 1, T. actaeon, T. masseanum (33218) T. sp.1 (33167) | |
| Pliensbachian | United Kingdom (Gloucestershire) | T. actaeon, T. stahli, T. calliplocoides (204124) T. calliplocoides, T. ellipticum (204126) | |
| Pliensbachian | Papua New Guinea | T. sp. (137280) | |
| Pliensbachian | Turkey | T. erythraeum, T. masseanum (218658) | |
| Imlayi | Canada (British Columbia) | T. erythraeum (33128 33169 33170 33183 33185) T. erythraeum, T. rursicosta (33176) T. rursicosta (33172) T. sp. 1, T. erythraeum (33126) T. sp. 1, T. erythraeum, T. rursicosta (33171) T. sp. 1, T. flandrini (32839) T. sp.1, T. flandrini, T. erythraeum, T. rursicosta (33168) T. spp. (32827 32828) | |
| Whiteavesi | Canada (British Columbia) | T. actaeon (32781 32782 32842 32845 32853 33111 33133 33134 33138 33146 33147 33149 33150 33151) T. actaeon, T. flandrini, T. masseanum (32847 32848) T. actaeon, T. masseanum (32846 32850 32852) T. erythraeum (32778) T. flandrini (32786 33132 33148) T. masseanum (32777 32830 33135) T. n. sp. 1, T. actaeon, T. masseanum (33158) T. spp. (32785) | |
| Early/Lower Pliensbachian | France (Centre-Val de Loire) | Ammonites actaeon, Ammonites masseanus, Ammonites aegion (234368) T. sp., T. masseanum (234369) | |
| Early/Lower Pliensbachian | Turkey | T. masseanum (218656) | |
| Early/Lower Pliensbachian | Morocco | T. sp. (206635 206636 206637) | |
| Early/Lower Pliensbachian | USA (Nevada) | T. flandrini (207909 207913) | |
| Early/Lower Pliensbachian | Canada (British Columbia) | Acanthopleuroceras stahli (53352 53879 55549) T. actaeon (198419 198448 198450 198490 199640) T. flandrini (55554) T. sp. (53253 53765 55551 55552 55553 198447) T. sp., T. actaeon (53177 53639) T. spp., T. actaeon (90960) | |
| Early/Lower Pliensbachian | Slovakia | T. sp. (218338) | |
| Ibex | Austria | T. sp. (145272 145273) | |
| Ibex | Spain (Granada) | T. calliplocum (190148) T. zitteli (190149) | |
| Ibex | Spain (Aragon) | T. arietiforme (146709) | |
| Ibex | Chile | T. zitteli (181909) | |
| Ibex | Hungary (Veszprém Megye) | T. sp. (81550 81551) T. zitteli (81548 81549) | |
| Ibex | Argentina | T. atuelense (181778) T. flandrini, T. zitteli (181776 181906) T. mediterraneum (181780) T. zitteli, T. atuelense (181777) | |
| Ibex | Hungary | T. demonense (78862) T. erythraeum (78873) T. zitteli (78856 78869) | |
| Ibex | Tunisia | T. flandrini (170529 170552) T. flandrini, T. demonense, T. zitteli, T. mediterraneum, T. stahliforme (170523) | |
| Ibex | Morocco | T. demonense (148875 197998) T. heterogeneum (148941) T. sp. (203733) T. sp., T. heterogeneum (148876) T. zitteli (148877 148878) | |
| Ibex | Spain (Jaen) | T. flandrini, T. erythraeum, T. demonense (190144) T. zitteli (145374) | |
| Ibex | Turkey | T. demonense (147293) T. erythraeum, T. demonense, T. mediterraneum (147328) T. flandrini (147315 147317) T. flandrini, T. erythraeum, T. mediterraneum (147292) T. flandrini, T. mediterraneum (147291) T. mediterraneum (147335) T. semilaevis (147316) T. semilaevis, T. mediterraneum (147304) T. sp., T. rotundum, T. zitteli (147337) T. sp., T. zitteli (147321) T. zitteli (147295) | |
| Ibex | Canada (British Columbia) | Acanthopleuroceras stahli (53110 53283 55550) T. flandrini (32843) | |
| Ibex | France | Acanthopleuroceras actaeon (146913 148160) T. calliplocoides (148084 148094) T. demonense (147712) T. flandrini (146482 146483 146486 147742 147982 148161 148166 148204) T. flandrini, T. masseanum (147711) T. flandrini, T. masseanum, T. demonense (148167) T. flandrini, T. masseanum, T. stahli (146490) T. masseanum (146491 147745 147746 147747 147748 147749 147750 147963 147992 147993 148108 148188) T. masseanum, T. calliplocum (147935) T. sp. (146489 147744 147934 148187) | |
| Ibex | Spain (Murcia) | T. calliplocum (190146) T. calliplocum, T. mediterraneum (190147) T. mediterraneum (145372) T. zitteli, T. calliplocum (190145) | |
| Ibex | United Kingdom (Dorset) | Acanthopleuroceras actaeon (159158) Acanthopleuroceras calliplocoides (159156) Acanthopleuroceras calliplocoides, Acanthopleuroceras stahli (159147) T. galatense, T. subarietiforme, T. sp., T. masseanum, T. ellipticum, T. lineatum, T. sparsicosta, T. futtereri, Acanthopleuroceras stahli, T. stefanii (159180) | |
| Jamesoni | Argentina | T. demonense (181795 181796 181891 181892 181893) T. hamulatum (181889 181890) | |
| Jamesoni | Hungary | T. flandrini (78878 80142) T. sp. (78874 78875 78877 80144 80148) | |
| Jamesoni | Turkey | T. flandrini (147303 147313 147333) | |
| Jamesoni | France | T. flandrini (147760) | |
| Jamesoni - Ibex | Argentina | T. demonense (181824) T. flandrini (181775 181779 181793 181794 181905 181907 181908) T. flandrini, T. zitteli (181894) | |
| Jamesoni - Ibex | Argentina (Mendoza) | T. flandrini, T. stahli (42773) | |
| Jamesoni - Ibex | Tunisia | T. flandrini (170508 170514 170517 170528) | |
| Jamesoni - Ibex | France | T. masseanum (147964 147965 148189 148193) | |
| Jamesoni - Ibex | Austria | T. flandrini (194502) | |
| Jamesoni - Ibex | Chile | T. flandrini (181815) | |
| Jamesoni - Ibex | Hungary (Veszprém Megye) | T. flandrini (81552) T. sp. (78404) | |
| Jamesoni - Ibex | Spain (Jaen) | T. erythraeum (190143) | |
| Jamesoni - Ibex | Turkey | T. sp. (147287) | |
| Late/Upper Pliensbachian | Canada (British Columbia) | T. masseanum (53768) |