Multicrustacea - Cyclida - Americlidae

Alternative combination: Cyclus americanus

Full reference: A. S. Packard. 1885. Types of Carboniferous Xiphosura new to North America. The American Naturalist 19:291-294

Belongs to Americlus according to J. B. Dzik 2008

See also Clark et al. 2020, Packard 1885, Rogers 1902, Schram and Koenemann 2021 and Schram et al. 1997

Sister taxa: Americlus limbatus, Americlus packardi, Americlus rankini

Type specimen: Its type locality is Mazon Creek, USNM Lacoe Collection, which is in a Westphalian D interdistributary bay mudstone in the Carbondale Formation of Illinois

Distribution: found only at Mazon Creek, USNM Lacoe Collection

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Specimen images are retrieved through the ePANDDA API.