Ancient diversification that reshaped animal life
A long-forgotten tail vertebra from James Ross Island has been confirmed as belonging to a Titanosaur, dating from about 82 million years ago. The bone had been stored in a BAS drawer since 1985 and is the first dinosaur fossil identified on Antarctica. Scientists say the find reshapes understanding of the continent’s prehistoric ecosystems and suggests a forested, hospitable Antarctica.
A study suggests that early animal digestion and fecal matter helped drive nutrient cycles, supporting marine life growth and possibly accelerating the Cambrian diversification. Coprolites trace the emergence of complex guts and debris distribution, hinting at a global fecal feedback that shaped oceans 540–520 million years ago.