Krister T. Smith,^1,* Bhart-Anjan S. Bhullar,^2,** Patricia A. Holroyd<sup>3

1</sup>aVertebrate Paleontology Lab, J. J. Pickle Research Campus, 10100 Burnet Rd. Bldg. 6, The University
²bDepartment of Geological Sciences, 1 University Station Stop C1100, The University of Texas, Austin
³cUniversity of California Museum of Paleontology, 1101 Valley Life Sciences Building, University of

^**Corresponding author/current address: Abteilung Messelforschung, Senckenberg Museum, Senckenberganlage 25, D60325 Frankfurt am Main, Germany; krister.smith@senckenberg.de
^**†Current address: Harvard University, Department of Organismic and Evolutionary Biology, 26 Oxford Street, Cambridge, MA 02138