Name/Title
Sand Dollar (fossil)Entry/Object ID
2011.57.38Description
Description: Phylum: Echinodermata
Class: Echinoidea
Order: Clypeasteroida
Genus: Clypeaster
Common Name: Sand Dollar
Age: Unknown
Location: Unknown
Description: Large domed sand dollar with (5) noticeable ridges extending downwards. Color is burnt orange to beige.
Physical Characteristics:
Echinoderms (Phylum Echinodermata) are a phylum of marine animals. Echinoderms are found at every ocean depth, from the intertidal zone to the abyssal zone. Aside from the problematic Arkarua, the first definitive members of the phylum appeared near the start of the Cambrian period.The phylum contains about 7,000 living species, making it the second-largest grouping of deuterostomes, after the chordates. Echinoderms are also the largest phylum that has no freshwater or terrestrial representatives.The word is derived from the Greek ?????d??µata (echinodermata), plural of ?????de?µa (echinoderma), "spiny skin" from ?????? (echinos), "sea-urchin", originally "hedgehog,"[1] and d??µa (derma), "skin".[2][3]The echinoderms are important both biologically and geologically: biologically because few other groupings are so abundant in the biotic desert of the deep sea, as well as the shallower oceans, and geologically as their ossified skeletons are major contributors to many limestone formations, and can provide valuable clues as to the geological environment. Further, it is held by some[citation needed] that the radiation of echinoderms was responsible for the Mesozoic revolution of marine life.
Genus: Clypeaster
Kingdom: Animalia (Animals)
Class: Echinoidea
Order: Clypeaseroida
Phylum: EchinodermataCollection
Museum Collection of FossilsAcquisition
Accession
2011.57Source or Donor
Museum Collection of FossilsAcquisition Method
Long-term LoanDimensions
Width
6-1/4 inDepth
4-1/2 inLength
7-1/2 inLocation
Location
Container
CenterDrawer
3rd ShelfShelf
RightCabinet
Case # 49Wall
NorthRoom
Delmar Smith HallBuilding
Crater Rock MuseumCategory
Permanent
