†Periarchus lyelli Conrad 1834 (sand dollar)
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Echinoidea - Clypeasteroida - Protoscutellidae
Alternative combination: Scutella lyelli
Belongs to Periarchus according to P. M. Kier 1997
See also Clark and Twitchell 1915, Cooke 1942 and Kier 1980
Sister taxa: Periarchus altus, Periarchus kewi, Periarchus pileussinensis, Periarchus protuberans, Periarchus quinquefarius, Periarchus rutriformis
Ecology: slow-moving semi-infaunal detritivore
Distribution:
• Eocene of United States (64: Alabama, Florida, Georgia, Mississippi, North Carolina, South Carolina collections)
Total: 64 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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