User:Abyssal/Prehistory of North America/DYK/12

...that an effigy mound in the shape of a turtle is located in the Beattie Park Mound Group in downtown Rockford, Illinois?
... that the fossil mantidfly Dicromantispa moronei was first described from a single specimen in a private collection?
... that Native Americans lived at the Canfield Island Site (pictured) on the West Branch Susquehanna River in Pennsylvania for thousands of years, and now hold an annual pow wow there?
... that the extinct Miocene age maple Acer smileyi has been classified as closely related to the living Acer nipponicum (pictured)?
... that Mound 72 (pictured) at Cahokia in pre-Columbian western Illinois was the site of ritual human sacrifice, including a pit burial containing 53 young women?

... that the Stonerose fossil site contains the earliest known records of Rosaceae, the rose family?
... that the extinct Syndesus ambericus is the only stag beetle known from the Caribbean?
... that Archaeomarasmius, Aureofungus, Coprinites, and Protomycena are the only four genera of agaric mushrooms known from the fossil record?
... that unlike the living golden-club Orontium aquaticum (pictured), the extinct species Orontium mackii may not have needed wetlands to grow?
... that the scorpionfly family Eorpidae has a single genus, Eorpa, described in 2013?