Hallipterus
| Hallipterus Temporal range: Devonian,
| |
|---|---|
| File:The Eurypterida of New York (1912) (20617594530).jpg | |
| Carapace of H. excelsior | |
| File:Hallipterus.png | |
| Reconstruction after Tetlie (2008) | |
| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Order: | †Eurypterida |
| Superfamily: | †Kokomopteroidea |
| Family: | †Hardieopteridae |
| Genus: | †Hallipterus Kjellesvig-Waering, 1963 |
| Type species | |
| †Hallipterus excelsior Hall, 1884
| |
| Synonyms | |
| |
_(20617594530).jpg){kind=link}
Hallipterus is a genus of prehistoric eurypterid classified as part of the family Hardieopteridae.[1]
Description
[edit | edit source]
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
[edit | edit source]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
[edit | edit source]References
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- ^ a b c Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ 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 Archived 2021-12-04 at the Wayback Machine , version 16.0 http://www.wsc.nmbe.ch/resources/fossils/Fossils16.0.pdf Archived 2015-11-29 at the Wayback Machine (PDF).
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