Biology:Pagea

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Pagea is a genus of prehistoric eurypterid classified as part of the family Stylonuridae. It contains three species, all from the Devonian (Lochkovian to Pragian);[1] P. plotnicki from Nunavut, Canada and P. sturrocki and P. symondsii from the Old Red Sandstone of the United Kingdom.[2] The genus is named in honor of David Page, an early worker on the fauna of the Old Red Sandstone and describer of the first Stylonurine eurypterid.[3]

Description

Pagea was a large stylonurid eurypterid. The third and fourth prosomal appendages bore double rows of flat spines. The prosoma was subrectangularly shaped, with the eyes located on the anterior half.[3]

The metastoma was narrow in relation to the width of the prosoma, being half as wide as it was long. The telson was styliform, long and keeled.[3]

Synonyms

Leiopterella tetliei, a small eurypterid known only from the single specimen CMN 53573 from the Early Devonian of Nunavut, Canada,[4] was synonymized with Pagea by Lamdell (2025).[5] Leiopterella was originally described in 2010 as a rhenopterid, though the features claimed in the original description were later determined to not actually be visible in the fossil.[5] Lamsdell found no distinguishing characteristics between L. tetliei and the co-occurring Pagea plotnicki, and concluded that Leiopterella merely represented a juvenile individual of that species.[5]

See also

  • List of eurypterids

References

  1. ↑ Lamsdell, James C.; Braddy, Simon J. (2010-04-23). "Cope's Rule and Romer's theory: patterns of diversity and gigantism in eurypterids and Palaeozoic vertebrates". Biology Letters 6 (2): 265–269. doi:10.1098/rsbl.2009.0700. ISSN 1744-9561. PMID 19828493. 
  2. ↑ 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).
  3. ↑ 3.0 3.1 3.2 "Pagea sturrocki gen. et sp. nov., a new eurypterid from the Old Red Sandstone of Scotland | The Palaeontological Association" (in en). https://www.palass.org/publications/palaeontology-journal/archive/5/1/article_pp137-148. 
  4. ↑ Lamsdell, James C.; Braddy, Simon J.; Loeffler, Elizabeth J.; Dineley, David L. (2010-10-27). "Early Devonian stylonurine eurypterids from Arctic Canada". Canadian Journal of Earth Sciences 47 (11): 1405–1415. doi:10.1139/E10-053. ISSN 0008-4077. Bibcode: 2010CaJES..47.1405J. 
  5. ↑ 5.0 5.1 5.2 Lamsdell, James C. (2025). "Codex Eurypterida: A Revised Taxonomy Based on Concordant Parsimony and Bayesian Phylogenetic Analyses". Bulletin of the American Museum of Natural History 2025 (473): 63–64. doi:10.1206/0003-0090.473.1.1. 

Wikidata ☰ Q7124295 entry




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