A Late Jurassic diverse ichnocoenosis from the siliciclastic Iouaridène Formation (Central High Atlas, Morocco)

摘要: The Late Jurassic Iouaridene tracksite has been studied for decades and is well-known the reference trackway of Breviparopus taghbaloutensis . These siliciclastic flood-plain deposits bear probably more than 1500 tracks, at least 21 trampled levels: they yield tracks medium to very large sauropods, possible stegosaurs theropods. first accurate description footprint association made by biped trackmakers proposed herein. More six hundred footprints a trackways mapped analysed; this led definition four tridactyl two tetradactyl morphotypes, mainly produced small theropods, while probable ornithopod are also present. bipedal dominated medium-large which most abundant type. taxonomical attribution morphotypes difficult poor preservation many specimens. Furthermore, theropod those with "megalosaurian" affinity, there complex ichnotaxonomical situation, that makes attributions yet challenging; however, it was recognize great affinity specimens Megalosauripus from Iberian Peninsula North America. Three-dimensional models were generated moulds best-preserved render detailed easier access