Specimen identifications and sizes.

*Histologically sampled. **Examined using research photographs from colleagues and/or through high-resolution research casts. Institution designations: BMMS  =  Bürgermeister-Müller Museum, Solnhofen; BMNH  =  Museum of Natural History, London; BSPG  =  Bayerische Staatssammlung für Paläontogie und Geologie, Munich; BYUVP  =  Brigham Young University Earth Science Museum, Provo; HMN  =  Museum für Naturkunde, Humboldt-Universität, Berlin; IGM  =  Institute of Geology, Mongolian Academy of Sciences, Ulaanbaatar; IVPP  =  Institute of Vertebrate Paleontology and Paleoanthropology, Beijing; JM  =  Jura Museum, Eichstät; LPM  =  Shenyang Normal University, Shenyang; MOR  =  Museum of the Rockies, Montana State University, Bozeman; TSMHN  =  Teyler-Museum Haarlem; WDC  =  Wyoming Dinosaur Center, Thermopolis.