[Science] Huge mega-rafts carried dinosaur-era animals on round-the-world trips – AI

Ancient marine life may have travelled the high seasSMITHSONIAN INSTITUTION/SPL By Michael MarshallHuge floating logs carried communities of animals on round-the-world trips during the dinosaur era. The mega-rafts gave marine animals a way to travel without passing through deadly low-oxygen zones. Palaeontologists have long known of preserved logs up to 14 metres long from the Jurassic period 200-145 million years ago. The logs are covered in crinoids, an animal related to starfish – they have a central body with many long feathery arms. The logs also carry oysters. Initial studies in the 1960s suggested that these logs were floating …