An isolated pterygotid ramus (Chelicerata: Eurypterida) from the Devonian Beartooth Butte Formation, Wyoming
2010; Cambridge University Press; Volume: 84; Issue: 6 Linguagem: Inglês
10.1666/10-040.1
ISSN1937-2337
AutoresJames C. Lamsdell, David Legg,
Tópico(s)Amphibian and Reptile Biology
ResumoAn isolated ramus of the pterygotid eurypterid Jaekelopterus cf. howelli from the Early Devonian (Pragian) Beartooth Butte Formation (Cottonwood Canyon, north-western Wyoming) is described. Pterygotid taxonomy and synonymy is briefly discussed with the genera Pterygotus, Acutiramus and Jaekelopterus shown to be potential synonyms. The use of cheliceral denticulation patterns as a generic-level character is discouraged in light of variations within genera and its unsuitability as a major characteristic in the other eurypterid families.
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