Tonna dunkeri
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| Tonna dunkeri | |
|---|---|
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| Shell of Tonna dunkeri (specimen at MNHN, Paris) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Tonnidae |
| Genus: | Tonna |
| Species: | T. dunkeri |
| Binomial name | |
| Tonna dunkeri | |
| Synonyms[2] | |
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Tonna dunkeri, common name boxing glove, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.[2]
The length of the shell attains 125 mm.[3]
The shell is moderate to large, fragile and globular in shape. It features a very large aperture and a low spire. The surface is sculpted with well-developed, broad, flat-topped spiral cords, and the base has a pronounced siphonal notch. Adult animals lack an operculum. This species is highly variable, with both shallow- and deep-water forms. On the Agulhas Bank, shells tend to be more globular, with a lower spire, a pronounced shoulder, and a slightly sunken suture.[3]
The color of fresh shells is light brown to orange-brown. The ribs are marked with irregular white blotches, bordered by darker brown bars.[3]
