Late Jurassic footprints reveal walking kinematics of theropod dinosaurs

摘要: Avanzini, M., Pin˜uela, L. & Garci´a-Ramos, J.C. 2011: Late Jurassic footprints reveal walk-ing kinematics of theropod dinosaurs. Lethaia,DOI:10.1111⁄j.1502-3931.2011.00276.xThis study describes a set collected from the LastresFormation (Asturias, N Spain). The are natural casts (tracks and undertracks)grouped into three morphotypes, which characterized by different size frequency,L⁄W relationship divarication angles: ‘Grallatorid’ morphotype, ‘Kayentapus–Mag-noavipes’ ‘Hispanosauropus’ morphotype. tracks were produced infirm, stiff soft sediments. infills deep tracks, typically formed in softmud, lack fine anatomical details, but they can walk track-maker through morphology internal track fills sinking traces. In all footprints,a horizontal outwardly directed translation movement rotation recognizable.The amount geometry digit penetration ground also show pronounceddifference. It be inferred described sample that theropoda-relatedichnogenera share common kinematics. hAsturias, dinosaur footprint, late jurassic, thero-pods, walking kinematics.Marco Avanzini. [avanzini@mtsn.tn.it], Museo Tridentino di Scienze Naturali, Via Calep-ina 14, 38100 Trento, Italy; Laura Pin˜uela [lpinuela@geol.uniovi.es], del Jura´sico deAsturias (MUJA), Colunga. Asturias, Espan˜a, Departamento de Geologi´aUniversidadde Oviedo, C⁄Jesu ´s Arias Velasco, s⁄n 33005 Espan˜a; Jose Carlos Gar-ci ´a-Ramos [jcgramos@geol.uniovi.es], Jurasico Asturias Colunga.Asturias, Geologi´a Universidad C⁄Jesu´s deVelasco, manuscript received on 13⁄10 ⁄2010; manu-script accepted 01 ⁄4⁄2011.