454
Journal of Paleontology 92(3):442–458
tolerance. Isoxys was an arthropod genus with a wide geographic and stratigraphic range, but it possessed a very thin, probably non-mineralized, shield with low preservation potential, and thus is only preserved in Konservat-Lagerstätten (Williams et al., 1996; Vannier and Chen, 2000; Stein et al., 2010). Does the combined occurrence of Buenellus and Isoxys, in sediments that accumulated within a deep water, low energy, outer shelf paleoenvironment, indicate that theMurray Shale has the potential to yield a soft-bodied fauna analogous to the Sirius Passet Lager- stätte? The possibility is intriguing, and provides another reason for further fieldwork in the Appalachians.
Acknowledgments
We thank M. Smith, R. Benfield, and students from Appa- lachian State University for assistance in the field. The first trilobite specimen from Chilhowee Mountain found as part of the present study was discovered by M. Smith accompanied by SJH. Blackberry Farm generously provided access to the locality at which Buenellus chilhoweensis n. sp. was found and donated multiple specimens to the USNM. Accessioning of specimens to the USNM was facilitated by D. Levin. Helpful comments were provided by reviewers J.S. Peel and P. Ahlberg, and associate editor B. Pratt. This work was funded in part by NSF Research Grant EAR Integrated Earth Systems 1410503 to MW.
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