Pectinatum Cup-and-Saucer Shell

Pectinatum Cup-and-Saucer Shell, Crucibulum pectinatum

Pectinatum Cup-and-Saucer Shell, Crucibulum pectinatum. Shell collected off the beach of Punta Chivato, Baja California Sur, March 2025. Size: 2.3 cm (0.9 inches) x 2.2 cm (0.9 inches) x 0.6 cm (0.2 inches). Collection, photographs and identification courtesy of Colin Campbell, DVM, Punta Chivato.

Pectinatum Cup-and-Saucer Shell, Crucibulum pectinatum. Shell collected off the beach of Punta Chivato, Baja California Sur, March 2025. Size: 2.9 cm (1.1 inches) x 2.4 cm (0.9 inches) x 1.0 cm (0.4 inches). Collection, photographs and identification courtesy of Colin Campbell, DVM, Punta Chivato.

(Carpenter 1856)

Family: Calyptraeidae
Fresh shells are bright orange-brown, which fades to a dull grayish brown. The radical ribs extend beyond margin of the thin shell; successive periods of growth are marked by deep pits. They have a pagoda-like profile.
Known Range:  Mazatlán, Mexico – Peru
Spanish Name:  Ficha Descriptiva
Has a mantle with a significant cavity used for breathing and waste, a radula and a nervous system.
Crucibulum Pectinatum –  snail, monophyletic, have single auricle in heart, have a single pair a gill leaflets on one side of the central axis, snails and slugs, translates as stomach foot, univalve, has a mantle with a significant cavity used for breathing and excretion, most mollusks have a radula, has a nervous system, multicellular organism, eukaryote (nucleus and organelles in membrane), body plan becomes fixed eventually, excluding metamorphosis, motile (most species), must ingest another organisms or their product to live.
Synonyms:   None.