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Presentation Time: 9:15 AM

THE CARBONIFEROUS WHIP SPIDER GRAEOPHONUS (ARACHNIDA: AMBLYPYGI): NEW DATA ON PEDIPALP EVOLUTION


KNECHT, Brian1, HEGNA, Thomas1 and GARWOOD, Russell2, (1)Geology Department, Western Illinois University, 1 University Circle, 113 Tillman Hall, Macomb, IL 61455, (2)School Of Materials / School of Earth, Atmospheric, and Environmental Sciences, The University of Manchester, Manchester, M13 9PL, United Kingdom, bj-knecht@wiu.edu

Two specimens of the Carboniferous whip spider Graeophonus (Order Amblypygi) are presented as high-resolution microCT scan reconstructions. The fossils are preserved within siderite nodules from the Middle Coal Measures of Coseley, Staffordshire, UK. The new 3D reconstructions of Graeophonus yield additional morphological information not revealed by surface examinations. Of particular interest is the form of the pedipalps, which are revealed to have a more complex armature. Compared to most modern species, the armature of the pedipalps belonging to Graeophonus is relatively meager, but it supports previous assertions of a close relationship between Graeophonus and the most primitive living species, Paracharon.

Session No. 262

T245. The Arthropoda: Paleoecology, Diversity, Taphonomy, and Phylogeny (Posters)
Tuesday, 29 October 2013: 9:00 AM-6:30 PM
Hall D (Colorado Convention Center)
Geological Society of America Abstracts with Programs. Vol. 45, No. 7, p.622
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