Ancient marine life may have travelled the high seas Smithsonian Institution / SPL
Huge 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.
We have long known of preserved logs up to 14 metres long from the Jurassic period 200 to 145 million years ago. The logs are covered in , an animal related to starfish that has a central body with many long feathery arms. The logs also carry oysters.
Initial studies in the 1960s
