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Hallipterus

Hallipterus is a genus of prehistoric eurypterid classified as part of the family Hardieopteridae.

Description
Hallipterus was a gigantic Hardieopterid eurypterid. Though some previous estimates have placed its size at over 1.5 meters in length, these were likely excessive. The chelicerae were simple and elongated. The first walking legs possessed flat and movable spines. The rest of the legs and the opisthosoma remain unknown. == Species ==
Species
Hallipterus contains one valid species, H. excelsior, from the Devonian of New York. Another species was once recognized from similarly aged deposits in Pennsylvania, "H. lacoanus", but it is today seen as synonymous with H. excelsior. ==See also==
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