3D reconstruction, taphonomic and petrological data resolve "the oldest record of bioturbation” as a body fossil coquina Christos Psarras, Philip C.J. Donoghue, Russell Garwood, Dmitriy V. Grazhdankin, Luke Parry, Vladimir I. Rogov and Alexander G. Liu This dataset contain a three dimensional X-Ray microtomographic dataset of fossil specimens of Nenoxites (Khatyspyt Formation of the late Ediacaran Khorbusuonka Group, Siberia, Sakha Republic, Russia), along with a stereolithographic model of a computed tomographic reconstruction, and an Excel table listing localities and lithotypes from which related fossils have been described The data accompanies the following paper: 3D reconstruction, taphonomic and petrological data resolve ‘‘the oldest record of bioturbation” as a body fossil coquina The specimen analysed, its catalogue number and the deposited files related to it are as follows: File name Specimen name Catalogue number Files 01 Nenoxites Nenoxites X 50382.1 Tomographic data 02 Nenoxites.stl Nenoxites X 50382.1 3D Stereolithograph model *Institutional abbreviation: The specimen is housed at the Sedgwick Museum, University of Cambridge, U.K. Specimen was scanned using using a Nikon Metrology HMX ST 225 at the Natural History Museum in London, United Kingdom; Raw tomographic data for the specimen consists of a stacked series of 2D .tif files that represent maps of X-ray attenuation. The individual slices can be viewed with standard graphics software. The dataset can be studied in 3D using tomographic reconstruction software such as Avizo (www.vsg3d.com/), Spiers (www.spiers-software.org/), VG Studio Max (www.volumegraphics.com) etc. Scan settings for the specimen scanned at Nikon Metrology HMX ST 225 at the Natural History Museum in London File name Specimen name Cat. number Energy Proj'ns Exposure(ms) Resolution (um) Target Current Filtration Voxel size volume 01 Nenoxites Nenoxites X 50382.1 180 KV 3142 708 33.71747838 Tungsten 140 μA None 33.7 μm