Acamptogenotia
Acamptogenotia is an extinct genus of predatory sea snails, marine gastropod mollusks belonging to an unassigned family in the Conoidea.[3]
| Acamptogenotia | |
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| Fossil shell of Acamptogenotia intorta | |
| Scientific classification | |
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| Family: | (unassigned) Conoidea |
| Genus: | Acamptogenotia Rovereto, 1899 |
| Type species | |
| Pleurotoma intorta Brocchi, 1814 | |
| Synonyms | |
First appearing 48.6 Ma and believed to go extinct 7.246 Ma. Specimens of the Acamptogenotia have been found in Austria, Denmark, Germany, The Netherlands, The UK, and The continental United States. The Acamptogenotia lived during the Paleocene epoch of Denmark and Greenland, The Oligocene epoch of Mexico, and in the Pliocene epoch of Italy
Description
The ovate, fusiform, shell is short and stout. The spire is about the length of the aperture. The columella is straight, very short, axis impervious. The siphonal canal is very short and wide. The anal sulcus is wide, moderately deep, close to the suture. The spiral sculpture is feeble. The axial sculpture consists of moderately strong riblets. The operculum is wide, ovate, with apical nucleus. Type Pleurotoma intorta Brocchi, 1814 [4]
Species
External links
References
- Bouchet, P., J.-P. Rocroi, J. Frýda, B. Hausdorf, W. Ponder, Á. Valdés & A. Warén. 2005. Classification and nomenclator of gastropod families. Malacologia 47 (1-2): 1-397.
- Powell, A. W. B. 1966. The molluscan families Speightiidae and Turridae: An evaluation of the valid taxa, both Recent and fossil, with lists of characteristic species. Bulletin of the Auckland Institute and Museum 5: 1-184, pl. 1-23.