Figure 1 Results of the cladistic analysis of 1,850 characters among 44 specimens of Tyrannosaurus rex. (A) Strict consensus of 50 MPTs showing the recovery of three primary growth stages separated by the specimen BMRP 2002.4.1. (B) The single ontogram recovered after the exclusion of wildcard specimens, reducing the number of OTUs to 31. Numbers to the left of the internodes are bootstrap and jackknife values, respectively; numbers to the right are Bremer decay indices. Asterisk indicates the type specimen. Ellipses enclose the regions of polytomies produced by the wildcard specimens, which are listed in the lower right hand corner of the corresponding ellipse. Note that the ellipses are limited to one side or the other relative to BMRP 2002.4.1, which corresponds to the topology of the strict consensus ontogram. Full-size DOI: 10.7717/peerj.9192/fig-1

Published as part of Carr, Thomas D., 2020, A high-resolution growth series of Tyrannosaurus rex obtained from multiple lines of evidence, pp. e9192 in PeerJ 8 on page 10, DOI: 10.7717/peerj.9192, http://zenodo.org/record/5824972