Clypeaster topilanus Jackson 1937 (sand dollar)

Echinoidea - Clypeasteroida - Clypeasteridae

Full reference: R. T. Jackson. 1937. Mexican fossil echini. Proceedings fo the United States National Museum 84(3015):227-237

Belongs to Clypeaster according to R. T. Jackson 1937

Sister taxa: Clypeaster (Rhaphidoclypus), Clypeaster abruptus, Clypeaster antillarum, Clypeaster batheri, Clypeaster bowersi, Clypeaster butleri, Clypeaster carrizoensis, Clypeaster caudatus, Clypeaster concavus, Clypeaster cotteaui, Clypeaster cubensis, Clypeaster deserti, Clypeaster europacificus, Clypeaster excentricum, Clypeaster gatuni, Clypeaster herrerae, Clypeaster humilis, Clypeaster japonicus, Clypeaster lanceolatus, Clypeaster lopezriosi, Clypeaster maoadentroensis, Clypeaster meridanensis, Clypeaster ochrus, Clypeaster oxybaphon, Clypeaster parrae, Clypeaster parvus, Clypeaster placentoides, Clypeaster planipetalum, Clypeaster reticulatus, Clypeaster rogersi, Clypeaster rosaceus, Clypeaster rotundus, Clypeaster saipanicus, Clypeaster sanchezi, Clypeaster speciosus, Clypeaster subdepressus, Clypeaster sunnilandensis, Clypeaster virescens

Type specimen: Its type locality is Rancho El Salitre, which is in an Oligocene marine horizon in the Mesón Formation of Mexico

Ecology: slow-moving semi-infaunal detritivore

Distribution:

• Oligocene of Mexico (2 collections)

Total: 2 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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