Fig. 1

Preservation of YPM VP 59473. The blocks containing all bones of the holotype (except for the humerus, tibiotarsus, synsacrum fragment, and large distal pedal phalanx) are shown under light microscopy (a, e, h) and with multiple x-ray views of the largest (b, c, d), second largest (f, g), and smallest (i) blocks as rendered in VGStudio, showing the relative placement of bones in the matrix blocks