Description: English: Fig. 18. Hexapoda fossil calibrations for (A) node 70: Delitzschala bitterfeldensis, BGR X 9216, scale bar 2mm, image credit C. Brauckmann; (B) node 68: Cretaceomachilis libanensis, Milki No. 194/35, scale bar 500μm, image credit G. Poinar; (C) node 69: Burmalepisma cretacicum, B-TH-1, scale bar 500μm, image credit G. Poinar; (D) node 67: Rhyniognatha hirsti, BMNH IN. 38234, scale bar 200µm, image credit NHMUK; (E) node 72: Triassonurus doliiformis, Louis Grauvogel collection No. 9304, scale bar 10mm, image credit L. Grauvogel-Stamm. Date: 21 March 2016. Source:
https://www.biorxiv.org/content/10.1101/044859v2. Author: Joanna M. Wolfe, Allison C. Daley, David A. Legg, Gregory D. Edgecombe.