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Alocolytoceras
Taxonomy
Alocolytoceras was named by Hyatt (1900) [Sepkoski's age data: J Toar-l J Toar-u]. It is not extant.
It was assigned to Ammonoidea by Sepkoski (2002); and to Alocolytoceratinae by Bourillot et al. (2008), Hoffmann (2010) and Galácz and Kassai (2012).
It was assigned to Ammonoidea by Sepkoski (2002); and to Alocolytoceratinae by Bourillot et al. (2008), Hoffmann (2010) and Galácz and Kassai (2012).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1900 | Alocolytoceras Hyatt p. 572 |
| 1925 | Peripleuroceras Tutcher and Trueman |
| 2002 | Aegolytoceras Sepkoski |
| 2002 | Alocolytoceras Sepkoski |
| 2005 | Aegolytoceras Venturi et al. p. 92 |
| 2008 | Alocolytoceras Bourillot et al. p. 599 |
| 2010 | Alocolytoceras Hoffmann p. 42 |
| 2012 | Alocolytoceras Galácz and Kassai |
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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. †Alocolytoceras Hyatt 1900
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†Alocolytoceras coarctatum Pompeckj 1896
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Invalid names: Lytoceras angustum Monestier 1921 [synonym], Lytoceras rude Monestier 1921 [synonym]
†Alocolytoceras dorcadis Meneghini 1875
†Alocolytoceras germainei d'Orbigny 1845
†Alocolytoceras isztimeri Galácz and Kassai 2012
†Alocolytoceras ophioneum Benecke 1865
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Invalid names: Ammonites (Lytoceras) catriensis Meneghini 1881 [synonym]
†Alocolytoceras sisyphus Gemmellaro 1886
†Alocolytoceras trautscholdi Oppel 1862
Invalid names: Aegolytoceras [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 18 | 13.7 | 4.30 | 31.3 | 15.1 | 6.95 | |
| shell diameter | 18 | 33.4 | 10.8 | 92.9 | 35.1 | 19.5 | |
| shell inflation | 18 | 12.0 | 4.30 | 31.3 | 13.0 | 7.08 |
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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 Aalenian or 190.80000 to 170.30000 Ma
Collections (37 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Sinemurian - Late/Upper Sinemurian | Mexico (Hidalgo) | Aegolytoceras sp. (208370) | |
| Late/Upper Sinemurian | Morocco | Aegolytoceras indet. (200536 200548 200553) | |
| Pliensbachian | Austria | Aegolytoceras sp. (218330) | |
| Jamesoni | United Kingdom (England) | Peripleuroceras rotundicosta (33357) | |
| Jamesoni | Italy | Aegolytoceras sp. (147083) | |
| Toarcian | France | A. trautscholdi (210819) Lytoceras dorcadis (210830) | |
| Toarcian - Early/Lower Bajocian | Morocco | A. sp. (145370) | |
| Bifrons | Morocco | A. dorcadis (97995) | |
| Bifrons | Italy | A. dorcadis (145323 147042) | |
| Bifrons | France | Lytoceras dorcadis (170429) | |
| Levesquei | Morocco | A. coarctatum (145369) A. ophioneum (145367) | |
| Levesquei | Germany | A. coarctatum (59427) A. germaini (59425) A. sp. (59429) | |
| Middle Toarcian - Late/Upper Toarcian | Morocco (Taza-Al Hoceima-Taounate) | A. dorcadis, A. coarctatum (234054) | |
| Variabilis | France | A. trautscholdi (161663) | |
| Variabilis | Spain | A. sp. (131824) | |
| Late/Upper Toarcian | United Kingdom (Yorkshire) | A. torulosum (220489) | |
| Late/Upper Toarcian | Spain | A. sp. (131825) | |
| Late/Upper Toarcian | France | A. coarctatum, A. trautscholdi (161668) A. rude, A. trautscholdi (161677) A. trautscholdi (161671 161676) | |
| Early/Lower Aalenian | Spain | A. ophioneum (71713) | |
| Middle Aalenian | Spain | A. ophioneum (71716) | |
| Murchisonae | Morocco | A. ophioneum (145368) | |
| Opalinum | Spain | A. ophioneum (131826) | |
| Aalenian | Italy (Sicily) | Audaxlytoceras ophioneum (151229) | |
| Early/Lower Bajocian | Hungary | A. isztimeri (220223 220225) A. sisyphus, A. isztimeri (220224) | |
| Early/Lower Bajocian | Spain | A. sp. (73294) |