Extended Data Fig. 6: Ischia of a variety of cerapodan dinosaurs in lateral view and drawn to the same length for comparison.
From: A hidden diversity of ceratopsian dinosaurs in Late Cretaceous Europe

a, Right ischium of Ferenceratops shqiperorum, NHMUK PV R 4900. b, Left ischium (reversed) of Psittacosaurus neimongoliensis, IVPP [Institute of Vertebrate Palaeontology and Palaeoanthropology, Beijing, China] V120888, an early-diverging ceratopsian. c, Left proximal (c1 – reversed) and right distal (c2) ischia of Protoceratops andrewsi, an early-diverging neoceratopsian (from Słowiak et al.61). Panel c was adapted from ref. 61, PeerJ Inc., under a Creative Commons licence CC BY 4.0. d, Right ischium of Archaeoceratops oshimai, IVPP V11114, an early-diverging neoceratopsian. e, Left ischium (reversed) of Chasmosaurus belli, ROM [Royal Ontario Museum, Toronto, Canada] 843, a ceratopsid. f, Left ischium (reversed) of MHN AIX.PV.1995.13, the Aix ‘Rhabdodon’, a western European ‘rhabdodontid’. Panel f was adapted with permission from T. Tortosa and E. Turini. g, Right ischium of ROM 804, Parksosaurus warreni, an early-diverging ornithopod. h, Right ischium of NHMUK PV R 193, Hypsilophodon foxii, an early-diverging ornithopod. i, Right ischium of MM [Manchester Museum, UK] LL12275, Tenontosaurus tilletti, an early-diverging iguanodontian. j, Right ischium of NHMUK PV R 11521, Mantellisaurus atherfieldensis, an early-diverging hadrosauroid. Abbreviations: ob.p., obturator process.