Checklist for Infraclass Megoperculata Börner, 1902 and region Illinois Beach State Park (Lake County, Illinois, USA)
List of families for Illinois Beach State Park 6 Families width 7 Species
Genera for Illinois Beach State Park 7 Genera with 7 Species
Species list for Illinois Beach State Park 7 Species
Subnodes of Megoperculata with occurrences in Illinois Beach State Park
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