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Gemmellaroceras
Taxonomy
Gemmellaroceras was named by Hyatt (1900) [Sepkoski's age data: J Sine-u J Plie-l Sepkoski's reference number: 302].
It was assigned to Eoderocerataceae by Blau (1998); and to Polymorphitinae by Bremer (1965), Smith and Tipper (1996), Sepkoski (2002) and Howarth (2013).
It was assigned to Eoderocerataceae by Blau (1998); and to Polymorphitinae by Bremer (1965), Smith and Tipper (1996), Sepkoski (2002) and Howarth (2013).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
Year | Name and author |
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1900 | Gemmellaroceras Hyatt p. 574 |
1924 | Tubellites Buckman |
1925 | Leptonotoceras Spath |
1965 | Gemmellaroceras Bremer |
1996 | Gemmellaroceras Smith and Tipper p. 33 |
1998 | Leptonotoceras Blau p. 232 |
1998 | Gemmellaroceras Blau p. 233 |
2000 | Leptonotoceras Blau et al. p. 274 |
2001 | Furlites Venturi and Ferri |
2002 | Gemmellaroceras Sepkoski |
2002 | Leptonotoceras Sepkoski |
2005 | Pelingoceras Venturi et al. p. 109 |
2013 | Gemmellaroceras Howarth p. 52 |
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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. †Gemmellaroceras Hyatt 1900
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†Gemmellaroceras aenigmaticum Gemmellaro 1884
†Gemmellaroceras alloplocum Gemmellaro 1884
†Gemmellaroceras circumcrispatum Gemmellaro 1884
†Gemmellaroceras cortesei Gemmellaro 1884
†Gemmellaroceras gemmellaroi Geczy 1976
†Gemmellaroceras granuliferum Gemmellaro 1884
†Gemmellaroceras involutum Venturi and Ferri 2001
†Gemmellaroceras mazzettii Gemmellaro 1884
†Gemmellaroceras pseudocarinatum Venturi et al. 2005
†Gemmellaroceras subtilicostatum Rakús and Guex 2002
Invalid names: Furlites Venturi and Ferri 2001 [synonym], Leptonotoceras Spath 1925 [synonym], Pelingoceras Venturi et al. 2005 [synonym], Tubellites Buckman 1924 [synonym]
Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 51 | 4.26 | 2.20 | 7.60 | 4.20 | 1.24 | |
shell diameter | 51 | 12.7 | 6.60 | 27.6 | 11.9 | 4.37 | |
shell inflation | 51 | 4.93 | 1.80 | 14.0 | 4.80 | 2.28 |
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Source: o = order, c = class | |||||
References: Kiessling 2003, Kiessling 2004 |
Age range: base of the Pliensbachian to the top of the Freboldi or 190.80000 to 185.70000 Ma
Collections (55 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Early/Lower Jurassic | Canada (British Columbia) | G. spp. (199615 199644 199692) | |
Late/Upper Sinemurian | United Kingdom (Gloucestershire) | Leptonotoceras sp. (204132) Leptonotoceras suessi (204133) Tubellites sp. (204130) | |
Late/Upper Sinemurian | United Kingdom (Yorkshire) | G. sp. (219470) | |
Late/Upper Sinemurian | Morocco | Leptonotoceras sp. (200536 200538) | |
Oxynotum - Raricostatum | Hungary (Veszprém Megye) | G. sp. (78351) | |
Raricostatum | Germany | Leptonotoceras emersoni (189119 189120) | |
Raricostatum | United Kingdom (England) | Leptonotoceras abnorme (33366) | |
Raricostatum | Austria | Leptonotoceras abnorme (189193 189198) | |
Late/Upper Sinemurian - Early/Lower Pliensbachian | Turkey | G. cortesei, G. abnorme (218660) | |
Semicostatum - Ibex | Hungary | G. alloplocum (78688) | |
Pliensbachian | Turkey | G. cortesei, G. abnorme (218658) | |
Pliensbachian | Canada (British Columbia) | G. aenigmaticum (33141 33189 33256) G. alloplocum (33131 33209 33210 33214 33220) G. sp. (198499) | |
Imlayi | Canada (British Columbia) | G. alloplocum (33126 33187) | |
Whiteavesi | Canada (British Columbia) | G. aenigmaticum (32809) G. alloplocum (33132) | |
Davoei | France | G. gemmellaroi (146456 146619 146622 148010 148143 148144 148145) | |
Davoei - Margaritatus | France | G. gemmellaroi (148106) | |
Early/Lower Pliensbachian | Tunisia | G. sp. (170527) | |
Early/Lower Pliensbachian | Canada (British Columbia) | G. sp. (198423 198451) | |
Early/Lower Pliensbachian | Mexico (Sonora) | G. sp. (208277 208278 208279 208281) | |
Early/Lower Pliensbachian | Canada (Yukon) | G. sp. (197543) | |
Early/Lower Pliensbachian | United Kingdom (Gloucestershire) | G. peregrinum, Tubellites tubellus, Tubellites anguiformis (204129) | |
Jamesoni | United Kingdom (Dorset) | G. peregrinum (159860) | |
Jamesoni | Italy | Furlites sp., Furlites involutus, Pelingoceras pseudocarinatum (146998) G. sp. (147085) Pelingoceras sp., Furlites involutus, Pelingoceras pseudocarinatum (146997) | |
Jamesoni | Tunisia | G. aenigmaticum, G. subtilicostatum, G. granuliferum, G. mazzettii (170522) | |
Jamesoni | Hungary | G. aenigmaticum (80160) | |
Freboldi | Canada (British Columbia) | G. spp. (33112) |