Jeweled Top Snail
Calliostoma annulatum
Marine Life of the Northeast Pacific (MLNEP) notes 5
Likely to be observed in video based on kelp transect observations.
Summary 6
Calliostoma annulatum, also known as the purple-ring topsnail, blue-ring topsnail or jeweled topsnail, is a medium-sized sea snail with gills and an operculum.
Description 7
The shell height varies between 16 mm and 35 mm. The elevated-conic shell is imperforate and rather thin. This species is distinguished by its brilliantly colored shell, which is lustrous with a gold field, dotted with brown on the spiral rows of grains, the periphery or lower edge of each whorl encircled by a zone of violet or magenta stripes, the axis surrounded by a tract of the same. The brilliance of the colors fades somewhat once the animal dies. The thin shell shows numerous granulose spiral riblets, about 7 on the penultimate whorl, 9 or 10 on the base. It has few or none interstitial lirulae. The acute, reddish apex is minute. The sutures are slightly impressed. There are about 9 whorls, slightly convex, the last angular at periphery, flattened beneath. The rhomboidal aperture is oblique, fluted within. There is no umbilicus. The head and foot of the animal has a yellow-orange color with brown spots. The color of the shell is gold with purple stripes.
Fuentes y créditos
- (c) Brenna Green, algunos derechos reservados (CC BY-NC-ND), subido por Brenna Green
- (c) Gena Bentall, algunos derechos reservados (CC BY-NC), subido por Gena Bentall
- (c) aaronbaldwin, algunos derechos reservados (CC BY-NC), subido por aaronbaldwin
- (c) Merav Vonshak, algunos derechos reservados (CC BY-NC), subido por Merav Vonshak
- (c) Shannon Schmunk, algunos derechos reservados (CC BY-SA)
- Adaptado por Shannon Schmunk del trabajo de (c) Wikipedia, algunos derechos reservados (CC BY-SA), https://hub.toolforge.org/P3151:121181?lang=
- Adaptado por Shannon Schmunk del trabajo de (c) Wikipedia, algunos derechos reservados (CC BY-SA), https://en.wikipedia.org/wiki/Calliostoma_annulatum
