Geologists solve half-century-old mystery of animal traces in ancient rocks

Source: Science Daily

Geologists have been baffled by perforations in an Australian quartzite (rock), identical in shape to burrows made in sands by crustaceans; the original sandy sediment is a billion years older than the oldest known animals. An international team of scientists has now resolved the mystery.

https://www.sciencedaily.com/releases/2021/09/210927150403.htm