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Riccardiceras longalvum
Taxonomy
Coeloceras longalvum was named by Vacek (1886) [= 1886. Coeloceras nov. sp. indet. VACEK, p.98. pl. 17. figs 3, 3a.]. It is a 3D body fossil.
It was recombined as Docidoceras longalvum by Westermann (1964); it was recombined as Docidoceras (Docidoceras) longalvum by Westermann (1969); it was recombined as Riccardiceras longalvum by Sandoval et al. (2000), Dietze et al. (2017).
It was recombined as Docidoceras longalvum by Westermann (1964); it was recombined as Docidoceras (Docidoceras) longalvum by Westermann (1969); it was recombined as Riccardiceras longalvum by Sandoval et al. (2000), Dietze et al. (2017).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1886 | Coeloceras longalvum Vacek p. 97 figs. pI. 17. f. 1-2 |
| 1964 | Docidoceras longalvum Westermann p. 48 figs. pI. 6. figs 1, 2 |
| 1969 | Docidoceras (Docidoceras) longalvum Westermann p. 134 figs. Pl 32, figs 5a-c; pl 33; text-fig 44 |
| 2000 | Riccardiceras longalvum Sandoval et al. pp. 32 - 34 figs. PI 1, figs 1 -2; PI. II , fig. I |
| 2017 | Riccardiceras longalvum Dietze et al. p. 185 |
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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.
†Riccardiceras longalvum Vacek 1886
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 36.4 | |||||
| shell diameter | 1 | 140.0 | |||||
| shell inflation | 1 | 77.0 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Aalenian to the top of the Early/Lower Bajocian or 174.70000 to 168.60000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Aalenian | Italy | Riccardiceras longalvum (198948 198949 198950 198952 198953) | |
| Middle Aalenian | Thailand | Riccardiceras longalvum (87467) | |
| Early/Lower Bajocian | USA (Alaska) | Docidoceras longalvum (175666) | |
| Early/Lower Bajocian | Canada (Yukon) | Docidoceras longalvum (114621 208211) |