Eurypteroidea

Eurypteroidea are an extinct superfamily of eurypterids. It contains three families (Dolichopteridae, Eurypteridae, Strobilopteridae) and two genera of uncertain classification, Paraeurypterus and Pentlandopterus.[1]

Eurypteroidea
Temporal range: Late Ordovician–Devonian
Fossil of Eurypterus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Order: †Eurypterida
Suborder: †Eurypterina
Superfamily: †Eurypteroidea
Burmeister, 1843
Families

Description

Eurypteroidea, which lived from the Ordovician to Devonian periods, were characterized by their last pair of prosomal (head) appendages, which were developed as swimming legs, carrying paddles formed by the expansion of the two penultimate joints.[2]

Families
gollark: WHY
gollark: AAAARGH WHY ARE PUMPKINS OUT OF ALIGNMENT
gollark: Seriously though, that'd actually be quite cool; there'd probably be dedicated hatchery areas for stupidly low time hatching.
gollark: Maybe 55 minutes if that's too easy.
gollark: BSA idea: a BSA to remove 6 days 23 hours 50 minutes from the time of your egg/hatchling!

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 16.0 http://www.wsc.nmbe.ch/resources/fossils/Fossils16.0.pdf (PDF).
  2. Størmer, L 1955. Merostomata. Treatise on Invertebrate Paleontology, Part P Arthropoda 2, Chelicerata, P30. as Eurypteracea


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