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Levisoceras
Taxonomy
Levisoceras was named by Foerste (1925) [Sepkoski's age data: O Trem-l Sepkoski's reference number: 524]. Its type is Cyrtocerina mercurius.
It was assigned to Cyrtendoceratidae by Ulrich et al. (1943); to Ellesmeroceratidae by Unklesbay and Young (1956), Flower (1964), Teichert et al. (1964) and Crick (1981); and to Ellesmerocerida by Sepkoski (2002).
It was assigned to Cyrtendoceratidae by Ulrich et al. (1943); to Ellesmeroceratidae by Unklesbay and Young (1956), Flower (1964), Teichert et al. (1964) and Crick (1981); and to Ellesmerocerida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1925 | Levisoceras Foerste |
| 1943 | Levisoceras Ulrich et al. |
| 1956 | Levisoceras Unklesbay and Young p. 484 |
| 1964 | Levisoceras Flower p. 65 |
| 1964 | Levisoceras Teichert et al. p. 140 |
| 1981 | Levisoceras Crick p. 227 |
| 2002 | Levisoceras Sepkoski |
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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. †Levisoceras Foerste 1925
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†Levisoceras arctedorsatum Ulrich et al. 1943
†Levisoceras belli Ulrich et al. 1943
†Levisoceras complanatum Ulrich et al. 1943
†Levisoceras constrictum Ulrich et al. 1943
†Levisoceras contractum Flower 1964
†Levisoceras curvatum Ulrich et al. 1943
†Levisoceras edwardsi Ulrich et al. 1943
†Levisoceras ellipticum Ulrich et al. 1943
†Levisoceras instabile Ulrich et al. 1943
†Levisoceras mercurius Billings 1865
†Levisoceras obliquatum Ulrich et al. 1943
†Levisoceras percurvatum Ulrich et al. 1943
†Levisoceras raaschi Ulrich et al. 1943
†Levisoceras subgracile Ulrich et al. 1943
†Levisoceras transitum Ulrich et al. 1943
Diagnosis
No diagnoses are available