Tegula excavata

Tegula excavata
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Tegulidae
Genus:	Tegula
Species:	T. excavata
Binomial name
Tegula excavata (Lamarck, 1822)
Synonyms [ citation needed ]
Agathistoma excavataLamarck, 1822 Chlorostoma excavataLamarck, 1822 Chlorostoma excavatumLamarck, 1822 Neomphalius excavataLamarck, 1822 Omphalius excavataLamarck, 1822 Trochus cinereaCosta, E.M. da, 1778 Trochus cinereusda Costa, 1778 Trochus excavatusLamarck, 1822 (original description)

Tegula excavata, common name the green-based tegula, is a species of sea snail, a marine gastropod mollusk in the family Tegulidae. ^[1]

Description

The height of the shell varies between 12 mm and 18 mm. The umbilicate shell has a conical shape. It is dull grayish, olivaceous or pinkish, longitudinally lineolate with a darker shade, frequently appearing unicolored. The spire is conic. The apex is eroded or acute. The six or seven whorls are flattened, scarcely convex, very obsoletely spirally grooved. The body whorl is acutely carinated at the periphery, flat or plano-concave beneath, concentrically lirate. The large aperture is subhorizontal, iridescent within. The columella is sinuous, unidentate in the middle, green, half surrounding the umbilicus with a sickle-shaped callus. The umbilicus is funnel-shaped, green or white within, broadly expanding at its opening. ^[2]

Five views of a shell of Tegula excavata

Distribution

This species occurs in the Gulf of Mexico, the Caribbean Sea and the Lesser Antilles. ^{[3] [4]}

References

1. Tegula excavata (Lamarck, 1822) . Retrieved through: World Register of Marine Species  on 20 April 2010.
2. Tryon, Jr., George W. (1889). Manual of Conchology. Vol. XI. Philadelphia: Conchological Section, Academy of Natural Sciences. p. 187. Retrieved 7 March 2025– via Internet Archive. (described as Chlorostoma excavatum)
3. "Tegula excavata (Lamarck, 1822)". COPEPEDIA. 4 August 2023. Retrieved 7 March 2025.
4. Leal, José H. (24 January 2025). "Shell of the Week: The Green-based Tegula". Bailey-Matthews National Shell Museum & Aquarium. Sanibel, Florida: Bailey-Matthews National Shell Museum. Retrieved 7 March 2025.

External links

• Gastropods.com: Tegula|excavata