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Crocodile evolution rebooted by Ice Age glaciations News Researchers discover impacts of Ice Age sea level changes in the genomes of Caribbean and Pacific crocodiles in Panama Published: 16Feb2021 Image by José Avila-Cervantes. Crocodiles are resilient animals from a lineage that has survived for over 200 million years. Skilled swimmers, crocodiles can travel long distances and live in freshwater or marine environments. But they can’t roam far on land. American crocodiles ( Crocodylus acutus) are found in the Caribbean and Pacific coasts of the Neotropics but they arrived in the Pacific before Panama existed, according to researchers from McGill University. Over 3 million years ago, the formation of the Isthmus of Panama altered global ocean circulation, connecting North and South America and establishing the Caribbean Sea. This resulted in widespread mixing of species on the continent and separation in the seas. On land, mammals from North America such as ma

Isthmus of panamaPanama generalUnited statesBarro colorado islandCaribbean seaBelize generalPanama canalJose avila cervantesHansce larssonW owen mcmillanMarta vargasCarlos ariasHans larssonMiryam venegas anayaRedpath museum at mcgillMcgill university