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Leioceras
Taxonomy
Leioceras is a genus. It is not extant.
It was assigned to Ammonoidea by Buckman (1899); to Ammonoidea by Sepkoski (2002); and to Leioceratinae by Howarth (2013).
It was assigned to Ammonoidea by Buckman (1899); to Ammonoidea by Sepkoski (2002); and to Leioceratinae by Howarth (2013).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
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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. †Leioceras
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†Leioceras capillare Buckman 1928
†Leioceras comptocostosum Chandler and Callomon 2009
†Leioceras comptum Reinecke 1818
†Leioceras costosum Quenstedt 1886
†Leioceras crassicostatum Rieber 1963
†Leioceras evertens Buckman 1899
†Leioceras goetzendorfense Dorn 1935
†Leioceras opalinum Reinecke 1818
†Leioceras paucicostatum Rieber 1993
†Leioceras striatum Buckman 1899
†Leioceras subcostosum Buckman 1899
†Lioceras concavum Sowerby 1815
Invalid names: Cypholioceras Buckman 1899 [synonym], Manselia Buckman 1899 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| height | 15 | 41.5 | 29.0 | 71.0 | 40.0 | 9.96 | |
| diameter | 15 | 96.2 | 59.0 | 143.0 | 94.5 | 19.3 | |
| inflation | 15 | 19.7 | 13.0 | 28.0 | 20.5 | 4.50 | |
| shell height | 6 | 27.2 | 13.0 | 45.5 | 34.8 | 13.6 | |
| shell diameter | 6 | 78.3 | 35.0 | 130.0 | 102.5 | 42.6 | |
| shell inflation | 6 | 30.0 | 14.0 | 54.6 | 34.9 | 15.8 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Late/Upper Toarcian to the top of the Early/Lower Aalenian or 180.40000 to 170.90000 Ma
Collections (98 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Toarcian | Germany (Bavaria) | L. costosum, L. opalinum, L. lineatum (51853) L. opalinum (51849 51850 51851 51852) | |
| Toarcian - Aalenian | Canada (Yukon) | L. sp. (34207) | |
| Toarcian - Aalenian | France (Provence-Alpes-Côte d'Azur) | L. crassicostatum, L. striatum (106465) | |
| Late/Upper Toarcian | Spain (Granada) | L. comptum (201384 201385 201386) | |
| Late/Upper Toarcian - Aalenian | France | L. costatum, L. uncinatum, L. uncum, L. sinon, L. opalinum (51501) | |
| Aalenian | Italy | L. comptum (198954 198955) L. lineatum, L. paucicostatum (198946) L. plicatum, L. uncinatum, L. comptum, L. opalinum, L. lineatum, L. crassicostatum, L. paucicostatum, L. striatum (198944) L. sp. (198947) L. sp., L. paucicostatum, L. striatum (198956) L. striatum (198945) | |
| Aalenian | Canada (Yukon) | L. opalinum (34204 34205 34206) | |
| Aalenian | United Kingdom | L. costosum (234764) | |
| Aalenian | United Kingdom (Yorkshire) | L. costosum (220494) L. sp. (220499) | |
| Aalenian | Morocco (Taza-Al Hoceima-Taounate) | L. comptum, L. opalinum (234055) | |
| Aalenian | Tunisia | L. sp. (170548 170602) | |
| Aalenian | Italy (Sicily) | L. partitum, L. opaliniforme, L. lineatum (151229) | |
| Aalenian | Iran | L. comptum (155326) | |
| Concavum | Tunisia | L. opaliniforme (170605) | |
| Concavum | United Kingdom | Lioceras concavum (228417) | |
| Early/Lower Aalenian | Spain (Granada) | L. opalinum (201314 201315) | |
| Early/Lower Aalenian | Spain (Murcia) | L. opalinum (201663 201664) | |
| Early/Lower Aalenian | Spain | L. opalinum, L. lineatum (168072) L. plicatellum, L. bifidatum (71713) L. uncinatum, L. comptum, L. opalinum, L. lineatum, L. crassicostatum, L. paucicostatum (168073) | |
| Early/Lower Aalenian | Germany | L. comptum (59515 59519) L. lineatum (59510) L. opalinum (59502 59503 59505 59514 59527) L. partitum, L. sp. (59520) L. partitum, L. sp., L. opalinum (59496) L. partitum, L. subcostosum, L. opalinum (59493) L. sp., L. comptum (59508) L. sp., L. opalinum (59504) L. subglabrum, L. partitum, L. sp., L. opalinum (59495) L. subglabrum, L. partitum, L. sp., L. subcostosum, L. opalinum (59477) L. subglabrum, L. partitum, L. subcostosum, L. opalinum (59478 59479 59494) L. subglabrum, L. subcostosum, L. opalinum (59492) | |
| Early/Lower Aalenian | Ukraine (Transcarpathian) | L. sp. (197178) | |
| Opalinum | Italy (Sicily) | Leicoeras comptum, L. opalinum (151231) | |
| Opalinum | Germany | L. crassicostatum, L. goetzendorfense, L. paucicostatum, L. striatum (228458) L. goetzendorfense (228460 228467) L. goetzendorfense, L. evertens (228465) L. goetzendorfense, L. paucicostatum, L. striatum (228459) L. goetzendorfense, L. striatum, L. capillare (228468) L. sp. (228461 228463 228464) | |
| Opalinum | France | L. opaliniforme (148822 148823) L. subglabrum (148821) | |
| Opalinum | Hungary | L. sp. (108614 108617 108618 108652 108653 108657 108658 108660 108661 108697 108698 108701 108703 108704 108708 108710 108711 108712) L. sp., L. comptum (108709) | |
| Opalinum | Spain | L. comptum, L. lineatum (131826) | |
| Opalinum | United Kingdom | L. comptocostosum (141362) L. opaliniforme, L. opalium (141358) L. opalinum (141359) L. plicatellum, L. grave, L. opalinum, L. lineatum, L. capillare (141360) | |
| Opalinum | Iran | L. comptum (196963 196965) | |
| Middle Jurassic | United Kingdom (Gloucestershire) | L. sp. (204108) |