Английская Википедия:Hallipterus
Шаблон:Short description Шаблон:Italic title Шаблон:Automatic taxobox
Hallipterus is a genus of prehistoric eurypterid classified as part of the family Hardieopteridae.[1]
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.[1] Still, assigned specimens suggest a size of over 1 meter long.[1]
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.[2]
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.[2]
Species
Hallipterus contains one valid species, H. excelsior, from the Devonian of New York.[3] Another species was once recognized from similarly aged deposits in Pennsylvania, "H. lacoanus",[2] but it is today seen as synonymous with H. excelsior.[1]
See also
References
Шаблон:Eurypterida Шаблон:Taxonbar
- ↑ 1,0 1,1 1,2 1,3 Шаблон:Cite journal
- ↑ 2,0 2,1 2,2 Шаблон:Cite web
- ↑ Dunlop, J. A., Penney, D. & Jekel, D. 2015. A summary list of fossil spiders and their relatives. In World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch , version 16.0 http://www.wsc.nmbe.ch/resources/fossils/Fossils16.0.pdf (PDF).
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