†Oligopygus alvarezi Lambert and Sanchez Roig 1924 (sand dollar)
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Echinoidea - Clypeasteroida - Oligopygidae
Belongs to Oligopygus according to M. Sanchez Roig 1926
Sister taxa: Oligopygus floridanus, Oligopygus haldermani, Oligopygus herrari, Oligopygus nancei, Oligopygus ovumserpentis, Oligopygus rotundus, Oligopygus sanjosephi, Oligopygus wetherbyi
Type specimen: Its type locality is Los Háticos Holguín, Holguín, which is in an Eocene marine horizon in Cuba
Ecology: slow-moving semi-infaunal detritivore
Distribution:
• Miocene of Cuba (1 collection)
• Eocene of Cuba (1)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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