Northeastern (46th Annual) and North-Central (45th Annual) Joint Meeting (2022 March 2011)
Paper No. 71-5
Presentation Time: 1:30 PM-5:30 PM

A POSSIBLE TRACEMAKER OF ARTHROPHYCUS

MCCOY, Victoria, Geology and Geophysics, Yale University, New Haven, CT 06520, victoria.mccoy@yale.edu, STROTHER, Paul K., Geology & Geophysics, Boston College, Weston Observatory, Weston, MA 02493, and BRIGGS, Derek, Dept. of Geology and Geophysics, Yale University, 210 Whitney Avenue, P.O. Box 208109, New Haven, CT 06520

A single organic compression of a long-bodied arthropod was collected from the Silurian (Llandovery) Tuscarora Formation at Mann Narrows, Pennsylvania. The preserved portion includes two tagmata: the anterior tagma has broad, rectangular pleurae each of which corresponds to two segments in the trunk, indicating diplosegments; the posterior tagma has monosegments with long, gently curving, posterior facing lateral ‘spines’. Head and appendages are not preserved. The compression fossil occurs in shale which is interbedded with sandstones containing Arthrophycus, an hypichnial trace that is abundant throughout the Tuscarora Formation in central Pennsylvania. The morphology of the arthropod matches the general proposed morphology of the producer of Arthrophycus, making the Tuscarora specimen a possible tracemaker. The closest affinities of the arthropod appear to lie with the problematic Oxyuropoda from the Devonian of Ireland.

Northeastern (46th Annual) and North-Central (45th Annual) Joint Meeting (2022 March 2011)
General Information for this Meeting
Session No. 71--Booth# 11
Paleontology (Posters)
Omni William Penn Hotel: Grand Ballroom
1:30 PM-5:30 PM, Tuesday, 22 March 2011

Geological Society of America Abstracts with Programs, Vol. 43, No. 1, p. 164

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