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Sand Dollars

Clypeasteroida A. Agassiz 1872

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World Register of Marine Species

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Echinocyamus; Echinocyamus pusillus (broad beau of sea); Fibulariidae; Laganiformes; Scutellina; Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

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Echinarachnius; Echinarachniidae; Echinarachnius parma (Sand dollar); Scutelliformes; Scutellina; Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

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Mellita quinquiesperforata (Sand dollar); Mellita; Mellitidae; Scutelloidea; Scutelliformes; Scutellina; Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

Image of Echinodiscus bisperforatus Leske 1778

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Echinodiscus bisperforatus; Echinodiscus; Astriclypeidae; Scutelloidea; Scutelliformes; Scutellina; Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

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Image of Clypeaster reticulatus (Linnaeus 1758)

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Clypeaster reticulatus; Clypeaster (cake urchins); Clypeasterina; Clypeasteridae (sea biscuits); Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

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Image of Clypeaster humilis (Leske 1778)

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Clypeaster humilis; Clypeaster (cake urchins); Clypeasterina; Clypeasteridae (sea biscuits); Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

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Clypeaster rosaceus (sea biscuit); Clypeaster (cake urchins); Clypeasterina; Clypeasteridae (sea biscuits); Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

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Fellaster; Fellaster zelandiae; Arachnoidinae; Clypeasterina; Clypeasteridae (sea biscuits); Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

Image of Clypeaster chesheri Serafy 1970

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Clypeaster chesheri; Clypeaster (cake urchins); Clypeasterina; Clypeasteridae (sea biscuits); Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

Image of Clypeaster luetkeni Mortensen 1948

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Clypeaster luetkeni; Clypeaster (cake urchins); Clypeasterina; Clypeasteridae (sea biscuits); Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

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Clypeaster subdepressus (Sand dollar); Clypeaster (cake urchins); Clypeasterina; Clypeasteridae (sea biscuits); Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

Image of Encope michelini L. Agassiz 1841

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Encope michelini; Encope; Mellitidae; Scutelloidea; Scutelliformes; Scutellina; Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

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Leodia; Leodia sexiesperforata (sand dollar); Mellitidae; Scutelloidea; Scutelliformes; Scutellina; Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

Image of Mellita tenuis H. L. Clark 1940

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Mellita tenuis; Mellita; Mellitidae; Scutelloidea; Scutelliformes; Scutellina; Clypeasteroida (Sand dollars); Neognathostomata; Irregularia; Euechinoidea; Echinoidea (sea urchins); Echinozoa; Echinodermata (echinoderms); Deuterostomia (deuterostomes); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

Echinocyamus pusillus (Azores)
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WoRMS Editorial Board World Register of Marine Species
Two specimens of Echinocyamus pusillus. The orange mass adhering to their dorsal sides are eggs (left) and sperm (right). Find more pictures on www.medslugs.de/E/Photographers/Peter_Wirtz.htm#photos (http://www.medslugs.de/E/Photographers/Peter_Wirtz.htm#photos)
Echinocyamus pusillus (O.F. Müller, 1776)
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Echinocyamus pusillus (O.F. Müller, 1776). Mesa do Con, 9 m (Ría de Arousa, Galicia) Spain.
Echinocyamus pusillus (O.F. Müller, 1776)
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Echinocyamus pusillus
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Picture of lab specimens Holtmann, S.A. et al. (1996). Atlas of the Zoobenthos of the Dutch Continental Shelf, p. 163. NIOZ: Den Burg, The Netherlands
Echinocyamus pusillus
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Echinarachnius parma - sand dollar
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Sand dollars from a DFO trawl survey.
Echinarachnius parma on sand
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Pair of sand dollars, along with a Mysis (bottom) as seen in Manicouagan area.
Mellita quinquiesperforata, aboral view of denuded test
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Mellita quinquiesperforata, aboral view of denuded test. Bessa Beach, Paraiba, Brazil, South Atlantic Ocean. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/file-colorboxed/182).
Echinodiscus bisperforatus naked test
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Naked test of Echinodiscus bisperforatus from Mayotte. Collection of the Centre Universitaire de Formation et de Recherches de Dembéni.
Echinodiscus bisperforatus
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Maputo, Mozambique
Echinodiscus bisperforatus
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Maputo, Mozambique
Clypeaster reticulatus test
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Both faces of a preserved Clypeaster reticulatus from Réunion island (Indian ocean).
Clypeaster reticulatus
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A live Clypeaster reticulatus from Mayotte (Indian ocean).
Clypeaster reticulatus (Linnaeus, 1758)
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Clypeaster reticulatus (Linnaeus, 1758) 2012-05-06. by Dr. WJ Chen from SiaoLioucious, Pingtung County, Taiwan, ROC
Clypeaster reticulatus (Linnaeus, 1758)
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Clypeaster reticulatus (Linnaeus, 1758) 2012-05-19. by Dr. WJ Chen from SiaoLioucious, Pingtung County, Taiwan, ROC
Clypeaster humilis, aboral view
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Clypeaster humilis observed in the Maldives (Landagiraavaru, Baa atoll).
Clypeaster rosaceus, aboral view
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Clypeaster rosaceus (USNM E 14904 (http://echinoderms.lifedesks.org/file-colorboxed/599)), collected from Pointe A Pitre, Rat Island, Grande-Terre, Guadeloupe, Caribbean Sea.
Fellaster zelandiae
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Aboral surface (upper left), oral surface (upper right), and left side of Fellaster zelandiae, specimen from the California Academy of Sciences, CASIZ 150392, collected from the North Island, New Zealand.
Clypeaster chesheri
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Clypeaster chesheri, aboral view, collected off Panama, Caribbean Sea, North Atlantic Ocean. ID & Photographer : Simon E. Coppard (http://echinoderms.lifedesks.org/gallery?page=10).
Clypeaster luetkeni aboral
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Aboral view of Clypeaster luetkeni from Florida. Picture (https://www.flickr.com/photos/myfwc/11670436373/) courtesy of Florida Fish and Wildlife Conservation Commission (FWC).
Clypeaster subdepressus aboral
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Aboral view of Clypeaster subdepressus, ervo de invertebrados marinhos do Museu Nacional/UFRJ - Rio de Janeiro, RJ, Brasil. Author : Dornicke (https://commons.wikimedia.org/wiki/User:Dornicke).
Encope michelini, aboral view of denuded test
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Encope michelini, aboral view of denuded test. Fort Pierce, Florida, Atlanic Ocean. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/file-colorboxed/373).
Leodia sexiesperforata, aboral view
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WoRMS Editorial Board World Register of Marine Species
Leodia sexiesperforata (aboral view), Playa La Angosta, Caribbean Coast, Panama. Source : Echinoderms of Panama (http://echinoderms.lifedesks.org/file-colorboxed/73).
Mellita tenuis (New Jersey)
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20 June 2016, 12:00 -14:00 Wildwood, New Jersey 38.97, -74.81 0.3 meters ID changed to Mellita tenuis (was M. quinquiesperforata) based on collection locality (see Coppard et al. 2013)

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