Proxiuber anteaustrale
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| Proxiuber anteaustrale Temporal range: | |
|---|---|
 | |
| Holotype from Auckland War Memorial Museum | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Naticidae |
| Genus: | Proxiuber |
| Species: | †P. anteaustrale |
| Binomial name | |
| †Proxiuber anteaustrale A. W. B. Powell, 1938 | |
| Synonyms[1] | |
| |
Proxiuber anteaustrale is an extinct species of sea snail, a marine gastropod mollusc in the family Naticidae.[2] Fossils of the species date to the early Pleistocene strata across New Zealand, including the Castlepoint Formation at Castlepoint, Wairarapa, New Zealand.
In the original description, Powell described the species as follows:
Shell small, broadly ovate; spire very little raised, about one-fifth height of aperture. Whorls 4, including smooth blunt protoconch of 11⁄2 whorls. Sutures well marked, abutting. Surface without sculpture except for indistinct axial growth lines. Outline of whorls strongly and evenly convex, but slightly flattened below suture. Aperture semilunar. Umbilicus widely open about one-sixth width of shell, funicle undeveloped, merely defined below by a groove. Inner lip callus thickened and slightly encroaching upon the umbilicus from above.[3]
The holotype of the species has a height of 5.1 mm (0.20 in) and a diameter of 5.8 mm (0.23 in).[3]
