Taxon specimen Femur_mm U2_mm Source Halszkaraptor holotype 76.20 15.10 Cau_et_al._2017 Velociraptor IGM_100/982 153.70 38.70 Brusatte_et_al._2013 Linheraptor IVPP_V16923 220.00 55.60 Brusatte_et_al._2013 Bambiraptor AMNH_FARB_FR_30556 118.50 29.20 Brusatte_et_al._2013 Saurornitholestes TMP_88.121.39 230.00 69.00 Brusatte_et_al._2013 Rahonavis UA_8656 87.00 23.10 Brusatte_et_al._2013 Mahakala IGM/1033 79.00 16.00 Brusatte_et_al._2013 Anchiornis BMNHC_PH822 70.50 13.10 Pei_et_al._2017 Archaeopteryx Eichstatt_specimen 37.00 5.80 Elzanowski_2001 Archaeopteryx London_specimen 61.00 11.00 Elzanowski_2001 Microraptor CAGS_20_7_004_left 74.75 12.88 Hwang_et_al_2002 Microraptor CAGS_20_7_004_right 74.26 13.84 Hwang_et_al_2002 Microraptor CAGS_20_8_001_right 74.77 16.04 Hwang_et_al_2002 Additional references not included in the main paper: Brusatte SL, Vremir M, Csiki-Sava Z, Turner AH,Watanabe A, Erickson GM, Norell MA. 2013. The Osteology of Balaur bondoc, an island-dwelling dromaeosaurid (Dinosauria: Theropoda) from the Late Cretaceous of Romania. Bulletin of the American Museum of Natural History 374:1–100. Elzanowski A. 2001. A new genus and species for the largest specimen of Archaeopteryx. Acta Palaeontologica Polonica 46:519–532. Pei R, Li Q, Meng Q, Norell MA, Gao K-Q. 2017. New specimens of Anchiornis huxleyi (Theropoda: Paraves) from the Late Jurassic of Northeastern China . Bulletin of the American Museum of Natural History 411:1–67.