Rocellaria stimpsonii
{{Short description|Species of bivalve}}
{{Italic title}}
{{Speciesbox
| taxon = Rocellaria stimpsonii
| authority = Tryon, 1861Bouchet, P.; Huber, M. (2014). Rocellaria stimpsonii Tryon, 1861. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=505251 on 2014-05-16
| display_parents = 3
}}
Rocellaria stimpsonii, with its common name the Stimpson chimney clam, is a species of saltwater clam, a marine bivalve mollusc in the family Gastrochaenidae, that can be found in the Gulf of Mexico.
This small species bores into calcareous surfaces, including the shells of other bivalves. The clam forms a living space which is lined with calcium carbonate and is shaped like a bottle,The Bailey-Matthews National Shell Museum website, shells, Family Gastrochaenidae, Rocellaria stimpsonii (Tryon, 1861), [http://shellmuseum.org/shells/shelldetails.cfm?id=278] accessed 2014-5-16 hence the common name "chimney clam."
Description
The shell of this bivalve grows to a size of {{convert|18|mm|abbr=on}}. The valves are white and translucent; they are also thin and delicate with a large gape at the front end towards the dorsal surface of the animal.