Zeatoma
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| Zeatoma Temporal range: | |
|---|---|
 | |
| Zeatoma anomala | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | †Pseudotomidae |
| Genus: | †Zeatoma P. A. Maxwell, 1992 |
| Type species | |
| † Marshallena impar A. W. B. Powell, 1942 | |
Zeatoma is a genus of extinct sea snails, marine gastropod molluscs in the family Pseudotomidae.[1] Species in the genus begin to appear in fossil record in the Kaiatan stage of the Eocene, and are only known to occur in New Zealand, living in warm water environments. Falling temperatures during the Pliocene has been suggested as a reason for the extinction of Zeatoma.
Members of the genus have fine, closely spaced spiral threads that are located between the primary spiral cords, which are not bisected by axial sculpture.[2]
Taxonomy
Zeatoma was first described in 1992 by Phillip A. Maxwell.[3]