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12 asaphida species
Isotelus gigas
Isotelus walcotti
Cryptolithoides reticulatus
Cryptolithoides ulrichi
Dikelocephalus minnesotensis
Ptychaspis miniscaensis
Pseudogygites latimarginatus
Isotelus maximus
Cryptolithus recurvus
Cryptolithus lorettensis
Cryptolithus tesselatus
Cryptolithus bellulus
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