A new study presents what is believed to be the oldest known example in the fossil record of an evolutionary arms race. These 517-million-year-old predator-prey interactions occurred in the ocean covering what is now South Australia between a small, shelled animal distantly related to brachiopods and an unknown marine animal capable of piercing its shell.
from All Top News -- ScienceDaily https://ift.tt/cqFJa5U
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