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Paleoartistic reconstruction of Quebrada Huatacondo during the Late Jurassic epoch. Image credit: Nahuel Vásquez.
“The Late Jurassic fossil record exhibits notable disparities in the abundance and distribution of dinosaur tracksites between Laurasia and Gondwana,” said Dr. Marko Yurac from the Unidad de Patrimonio Paleontológico and his colleagues.
“In Europe alone, several sites have been documented, including those in Italy, Croatia, Poland, Spain, Switzerland, France, Germany, and Portugal.”
“Additionally, North America hosts extensive tracksites with abundant ichnological evidence.”
“In contrast, the dinosaur track record in Gondwana is markedly more limited and fragmented. Notable exceptions include track-bearing outcrops in the High Atlas Mountains of Morocco.”
“Beyond these, ichnological evidence is relatively scarce, with only a few records from Australia.
“In South America, most dinosaur tracksites are concentrated along the eastern margin of the continent, particularly in Brazil, Guyana, and Uruguay, with additional reports from northern regions such as Colombia.”
“In contrast, the western margin of South America — corresponding to the western boundary of Gondwana — has yielded Late Jurassic dinosaur tracksites exclusively from Chile.”