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Annoceras
Taxonomy
Annoceras was named by Flower (1964) [Sepkoski's age data: O Trem Sepkoski's reference number: 298]. It is not extant. Its type is Annoceras costatum.
It was assigned to Ellesmeroceratidae by Crick (1981), Kröger and Landing (2007).
It was assigned to Ellesmeroceratidae by Crick (1981), Kröger and Landing (2007).
Synonymy list
| Year | Name and author |
|---|---|
| 1964 | Annoceras Flower |
| 1981 | Annoceras Crick p. 227 |
| 2007 | Annoceras Kröger and Landing |
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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. †Annoceras Flower 1964
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†Annoceras costatum Flower 1964
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Invalid names: Annoceras elevatum Flower 1964 [synonym], Annoceras perobliquum Foerste 1964 [synonym], Ellesmeroceras angulatum Flower 1964 [synonym], Ellesmeroceras fusiforme Flower 1964 [synonym], Ellesmeroceras imbricatum Flower 1964 [synonym], Ellesmeroceras progressum Flower 1964 [synonym], Eremoceras magnum Flower 1964 [synonym], Eremoceras perseptatum Flower 1964 [synonym]
†Annoceras multicameratum Flower 1964
†Annoceras vernonense Ulrich et al. 1943
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: Demingian or 486.85000 to 483.40000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Skullrockian | USA (New York) | A. costatum (87451 87456 87523 87524 89489) A. costatum, A. multicameratum (87318) | |
| Demingian | USA (New York) | A. costatum, A. elevatum, Ellesmeroceras angulatum, Ellesmeroceras fusiforme, Ellesmeroceras imbricatum, Ellesmeroceras progressum, Eremoceras magnum, Eremoceras perseptatum (427) | |
| Gasconadian | USA (New York) | A. costatum, A. elevatum, A. perobliquum, Ellesmeroceras fusiforme, Ellesmeroceras progressum, Eremoceras magnum, Eremoceras perseptatum (56487) | |
| Tremadocian | USA (Wisconsin) | Dakeoceras vernonense (189339) |