page_title: Hallipterus
section_title: Description
hierarchical_section_title: Hallipterus / Description
caption_attribution_description: English: Reconstruction of H. excelsior.
context_page_description: Hallipterus is a genus of prehistoric eurypterid classified as part of the family Hardieopteridae.
context_section_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. Still, assigned specimens suggest a size of over 1 meter long.
  The carapace was subelliptical, greater in length than in width, with a prominent and unornamented marginal rim. The eyes were very small, close to each other and separated by a prominent median ridge with large ocelli at the posterior extremity.
  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.
caption: Reconstruction
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