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- Keyhole_sand_dollar abstract "Keyhole sand dollar refers to three species of sand dollars in the genus Mellita. They are found on the Atlantic coasts of the Americas, ranging from Caribbean Islands, such as Jamaica and Puerto Rico, to the southern areas of the United States at the north to the southern coasts of Brazil at the south. Their range includes Bermuda and the Pacific coasts of equatorial countries, such as Mexico and Costa Rica. The velvet-like skin of live keyhole sand dollars is usually tan, brown, grey or dark green in colour. Like all sand dollars, they are found in shallow seawater below tide lines, where they burrow into the seabed to obtain food. The creatures feed on fine particles of plankton and other organic matter they filter from the water.Keyhole sand dollars are so named because of the distinctive keyhole-shaped perforation toward the rear of the endoskeleton. This body shape offers an example of secondary front-to-back bilateral symmetry in an organism whose adult anatomy is primarily based on fivefold radial symmetry. The radial symmetry is characteristic of echinoids generally, including the ancestors of sand dollars. The bilateral features evolved as adaptations to a burrowing lifestyle.Mellita isometra ranges across the east coast of the United States. Mellita tenuis appears across the Caribbean and Gulf Coasts of Florida and nearby states. Mellita quinquiesperforata inhabits a wide range, from near the Mississippi Delta to Mexico and the Caribbean region and the coasts of South America.".
- Keyhole_sand_dollar class Sea_urchin.
- Keyhole_sand_dollar kingdom Animal.
- Keyhole_sand_dollar order Sand_dollar.
- Keyhole_sand_dollar order Scutellina_(Echinoderm).
- Keyhole_sand_dollar phylum Echinoderm.
- Keyhole_sand_dollar thumbnail Sand_Dollar.jpg?width=300.
- Keyhole_sand_dollar wikiPageExternalLink Mellita_quinquiesperforata.html.
- Keyhole_sand_dollar wikiPageExternalLink sand-dollar.html.
- Keyhole_sand_dollar wikiPageExternalLink invertebrates.htm.
- Keyhole_sand_dollar wikiPageExternalLink keyhole_sand_dollar.
- Keyhole_sand_dollar wikiPageExternalLink www.ncseagrant.org.
- Keyhole_sand_dollar wikiPageID "9024293".
- Keyhole_sand_dollar wikiPageRevisionID "544903361".
- Keyhole_sand_dollar classis Sea_urchin.
- Keyhole_sand_dollar familia "Mellitidae".
- Keyhole_sand_dollar familiaAuthority "Leske, 1778".
- Keyhole_sand_dollar genus "Mellita".
- Keyhole_sand_dollar hasPhotoCollection Keyhole_sand_dollar.
- Keyhole_sand_dollar imageCaption "Mellita quinquiesperforata".
- Keyhole_sand_dollar name "Keyhole sand dollar".
- Keyhole_sand_dollar ordo Sand_dollar.
- Keyhole_sand_dollar phylum Echinoderm.
- Keyhole_sand_dollar regnum "Animalia".
- Keyhole_sand_dollar subdivisionRanks Genus_(disambiguation).
- Keyhole_sand_dollar subordo Scutellina_(Echinoderm).
- Keyhole_sand_dollar subject Category:Echinoidea.
- Keyhole_sand_dollar type Animal.
- Keyhole_sand_dollar type Eukaryote.
- Keyhole_sand_dollar type Species.
- Keyhole_sand_dollar type Organism.
- Keyhole_sand_dollar comment "Keyhole sand dollar refers to three species of sand dollars in the genus Mellita. They are found on the Atlantic coasts of the Americas, ranging from Caribbean Islands, such as Jamaica and Puerto Rico, to the southern areas of the United States at the north to the southern coasts of Brazil at the south. Their range includes Bermuda and the Pacific coasts of equatorial countries, such as Mexico and Costa Rica.".
- Keyhole_sand_dollar label "Keyhole sand dollar".
- Keyhole_sand_dollar sameAs m.027tx6q.
- Keyhole_sand_dollar sameAs Q6398303.
- Keyhole_sand_dollar sameAs Q6398303.
- Keyhole_sand_dollar wasDerivedFrom Keyhole_sand_dollar?oldid=544903361.
- Keyhole_sand_dollar depiction Sand_Dollar.jpg.
- Keyhole_sand_dollar isPrimaryTopicOf Keyhole_sand_dollar.
- Keyhole_sand_dollar name "Keyhole sand dollar".
