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Eocarcinosoma

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This is an old revision of this page, as edited by Super Dromaeosaurus (talk | contribs) at 17:27, 1 September 2019 (The total body size of Eorcarcinosoma is not specified in the original description at any time. The size of the prosoma is said, which is 2.05 cm long. It is impossible that the rest of the body measured only 1 cm. So Alkenopterus burglahrensis takes the crown of the smallest eurypterid (whose size was also wrong, that source is not completely reliable).). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Eocarcinosoma
Temporal range: Ashgillian, 449–443.8 Ma
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Order: †Eurypterida
Superfamily: †Carcinosomatoidea
Family: †Carcinosomatidae
Genus: †Eocarcinosoma
Caster & Kjellesvig-Waering, 1964
Type species
†Eocarcinosoma batrachophthalmus
Caster & Kjellesvig-Waering, 1964

Eocarcinosoma is a genus of eurypterid, a group of extinct aquatic arthropods. Fossils of Eocarcinosoma have been discovered in deposits of the Ordovician age in the United States. The genus contains only one species, E. batrachophthalmus, from the Ashgillian age of Ohio. It is classified as part of Carcinosomatidae, an eurypterid family classified as part of the superfamily Carcinosomatoidea.[1]

Description

Eocarcinosoma is based in one only well-preserved carapace (head plate). The prosoma ("head") was broad and subtriangular (almost triangular), with rounded frontal margins bent downward, what probably served to excavate in the mud. The lateral compound eyes were placed marginally (in the margins), prominent and roughly reniform (bean-shaped). The ocelli (light-sensitive simple eyes) occupied a central position, slightly behind the eyes, and were on a small, rounded and ocellar mound.[2]

See also

References

  1. ^ 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 18.5 http://www.wsc.nmbe.ch/resources/fossils/Fossils18.5.pdf (PDF).
  2. ^ Caster, Kenneth E.; Kjellesvig-Waering, Erik N. (1964). "Upper Ordovician eurypterids of Ohio". Paleontological Research Institution.


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