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Dactylioceras (Orthodactylites) semiannulatum
Taxonomy
Dactylioceras (Orthodactylites) semiannulatum was named by Howarth (1978).
Sister species lacking formal opinion data
D. aequistriatum, D. alpestre, D. anguiformis, D. anguinum, D. annulatum, D. attenuatum, D. comptum, D. curvicosta, D. groenlandicum, D. helianthoides, D. hoelderi, D. pseudocommmune, D. semicelatum, D. tenuicostatum, D. verme, D. vermis, D. anguiformis, D. vermis, D. aequistriatum, D. andaluciensis, D. chilense, D. clevelandicum, D. ernsti, D. helianthoides, D. hoelderi, D. semicelatum, D. tenuicostatum, D. tenuicostatum, D. verme, D. tenuicostatum, D. annuliferum, Dactylites tenuicostatum, Orthodactylites andaluciensis
Synonymy list
| Year | Name and author |
|---|---|
| 1978 | Dactylioceras (Orthodactylites) semiannulatum Howarth |
| 2022 | Dactylioceras (Orthodactylites) semiannulatum Benzaggagh et al. p. 9 fig. 8K,L |
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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.
†Dactylioceras (Orthodactylites) semiannulatum Howarth 1978
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Tenuicostatum or 184.20000 to 182.90000 Ma
Collections (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Toarcian | Germany (Bavaria) | Dactylioceras semiannulatum (51271) | |
| Early/Lower Toarcian | Spain (Cantabria) | Dactylioceras semiannulatum (222268 222269 222270 222271 222273) | |
| Falciferum | Morocco | Dactylioceras semiannulatum (228345 228346) | |
| Falciferum | France (Vendée) | Dactylioceras semiannulatum (147206) | |
| Falciferum | France | Dactylioceras semiannulatum (140741) | |
| Falciferum | France (Deux-Sevrès) | Dactylioceras semiannulatum (140859 140860 147149) | |
| Falciferum | Germany | Dactylioceras semiannulatum (228509) | |
| Tenuicostatum | Spain (Aragon) | Dactylioceras semiannulatum (146794) |