†Periarchus quinquefarius Say 1825
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Echinoidea - Clypeasteroida - Protoscutellidae
Alternative combinations: Mortonella quinquefaria, Scutella quinquefaria
Belongs to Periarchus according to C. W. Cooke 1942
See also Clark and Twitchell 1915
Sister taxa: Periarchus altus, Periarchus kewi, Periarchus lyelli, Periarchus pileussinensis, Periarchus protuberans, Periarchus rutriformis
Distribution:
• Eocene of United States (3: Georgia collections)
Total: 3 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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