| Calliostoma palmeri | |
|---|---|
| Apertural view of a shell of Calliostoma palmeri Dall, 1871, 25.7 mm height by 27.6 mm diameter, from Puerto Penasco, Mexico | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Vetigastropoda |
| Superfamily: | Trochoidea |
| Family: | Calliostomatidae |
| Subfamily: | Calliostomatinae |
| Genus: | Calliostoma |
| Species: | C. palmeri |
| Binomial name | |
| Calliostoma palmeri Dall, 1871 |
|
Calliostoma palmeri is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.[1]
The shell of this species is very similar to that of Calliostoma bonita, but there are a few recognizable differences. The shell reaches a larger size and appears more squat than in C. bonita, because it has a lower spire. The shell appears to be thin and is relatively lightweight for its size. Sculpturally the carinations along the base and periphery are not as strong as in C. bonita and the peripheral carination is located higher on the whorl giving the shell a very distinct profile. The darker brown color markings on the tan shell are not as bold or distinct as in C. bonita. Average size: Height 24 mm, diameter 28 mm. Despite the range overlap there is no known intergradation between Calliostoma palmeri and C. bonita and the two species are considered to be distinct but closely related, making them sibling species. [2]
This is a Panamic Province species which is generally found from the northern end of the Gulf of California to Guaymas, Mexico, and is found in the low intertidal zone to the subtidal zone to depths of 45 m. [3]