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Emaciaticeras
Name was considered invalid by Haas 1947 due to "no authors of genera are given, nor is any of those names designated a new name, nor is a generic (subgeneric) diagnosis, or definition, or description given in any case; needless to say that there are no type species designated". However this opinion is based on the belief this publication was published after 31 Dec 1930 when ICZN Article 25 came into effect. Although the endpapers are dated 15 June 1931, the frontispiece for this paper is dated December 1930. Emaciaticeras is a name clearly derived from Ammonites emaciatus Catullo, 1847 thus idea that the type species is not clear is moot. Howarth (2013) considered that Vecchia (1949) was in fact the author of this name an alternative viewpoint is that Vecchia (1949) acted as first revisor.
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It was assigned to Ammonoidea by Sepkoski (2002); and to Arieticeratinae by Géczy and Meister (1998), Hillebrandt (2006), Howarth (2013).
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| Year | Name and author |
|---|---|
| 1931 | Seguentia Fucini |
| 1931 | Emaciaticeras Fucini p. 119 |
| 1931 | Trinacrioceras Fucini p. 147 |
| 1970 | Ugdulenia Cantaluppi |
| 1998 | Emaciaticeras Géczy and Meister |
| 2002 | Emaciaticeras Sepkoski |
| 2006 | Emaciaticeras Hillebrandt p. 249 |
| 2013 | Emaciaticeras Howarth p. 84 |
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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.
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell diameter | 3 | 66.7 | 53.0 | 100.0 | 56.0 | 26.3 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Margaritatus to the top of the Tenuicostatum or 192.90000 to 182.90000 Ma
Collections (56 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Pliensbachian | Morocco | E. emaciatum (206713 206714) E. fervidum (206711) E. gracile (200352) E. imitator, E. lottii (200347) E. sp. (200349 206710 206712) E. sp., E. emaciatum (200348) | |
| Late/Upper Pliensbachian | Spain (Granda) | E. archimedis (200537) E. fulculum, E. emaciatum (200529) E. gracile (200533 200557) E. gracile, E. timaei (200559) E. timaei (200554) | |
| Late/Upper Pliensbachian | Spain (Jaén) | E. emaciatum (200493) E. falculum, E. emaciatum (200491 200492 200494) E. imitator, E. emaciatum (200490) E. imitator, E. lottii (200487 200488 200489) E. timaei (200496 200497 200498) E. timaei, E. gracile (200499 200500) | |
| Late/Upper Pliensbachian | Canada (Yukon) | E. lottii (208202) | |
| Margaritatus | Tunisia | E. archimedis (84289) | |
| Pliensbachian | Tunisia | E. ermaciatum (84294) | |
| Spinatum | Tunisia | E. archimedis (84286) E. emaciatum (170587) E. lottii, E. emaciatum (84287) E. sp. (170610) | |
| Spinatum | Hungary | E. emaciatum (118888) E. sp. (109509) | |
| Spinatum | Morocco | E. archimedis (148929 148930) E. emaciatum (148926) E. fervidum (148927 148928) E. fervidum, E. emaciatum (148945) E. sp. (203735 203736) E. sp., E. fervidum, E. emaciatum (203737) | |
| Spinatum | Algeria | E. sp. (148274 148278 148279) | |
| Spinatum | Spain (Aragon) | E. emaciatum (146771 146774) E. imitator, E. lottii (146772) | |
| Spinatum | Canada (Yukon) | E. lottii (114583) | |
| Spinatum | Chile | E. sp. A (183613) | |
| Spinatum - Tenuicostatum | Hungary | E. sp., E. fervidum, E. emaciatum (109576) | |
| Tenuicostatum | Italy | E. sp. (238987) |