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Soc. open sci."],"published-print":{"date-parts":[[2023,8]]},"abstract":"<jats:p>\n                    During the Mesozoic, non-avian theropods represented one of the most successful clades globally distributed, with a wide diversity of forms. An example is the clade Megalosauroidea, which included medium- to large-bodied forms. Here, we analyse the macroevolution of the locomotor system in early Theropoda, emphasizing the Megalosauroidea. We scored the\n                    <jats:italic>Spinosaurus<\/jats:italic>\n                    neotype in a published taxon-character matrix and described the associated modifications in character states, mapping them onto a phylogeny and using these to study disparity. In the evolution of Megalosauroidea, there was the mosaic emergence of a low swollen ridge; enlargement of the posterior brevis fossa and emergence of a posterodorsal process on the ilium in some megalosauroids; emergence of a femoral head oriented anteromedially and medially angled, and appearance of posterolaterally oriented medial femoral condyles in spinosaurids. The greatest morphological disparity is in the ilium of megalosaurids; the ischium seems to have a high degree of homoplasy; there is a clear distinction in the femoral morphospace regarding megalosauroids and other theropods; piatnitzkysaurids show considerable disparity of zeugopodial characters. These reconstructions of osteological evolution form a stronger basis on which other studies could build, such as mapping of pelvic\/appendicular musculature and\/or correlating skeletal traits with changes in locomotor function.\n                  <\/jats:p>","DOI":"10.1098\/rsos.230481","type":"journal-article","created":{"date-parts":[[2023,8,16]],"date-time":"2023-08-16T03:05:35Z","timestamp":1692155135000},"update-policy":"https:\/\/doi.org\/10.1098\/crossmark-policy","source":"Crossref","is-referenced-by-count":11,"title":["Macroevolutionary patterns in the pelvis, stylopodium and zeugopodium of megalosauroid theropod dinosaurs and their importance for locomotor function"],"prefix":"10.1098","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8403-7884","authenticated-orcid":false,"given":"Mauro B. 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