A football-size creature may have been among the earliest plant-eating land animals

Scientists found a 307 million-year-old fossil, Tyrannoroter heberti, revealing one of the earliest known land vertebrates ...
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Ancient sea sponges in 541-million-year-old fossils could be Earth’s first animals even before dinosaurs

For decades, scientists have debated which animals first appeared on Earth and set the stage for the evolution of complex life. A recent study by MIT geochemists offers compelling evidence that the ...