Early animals: Death near the shoreline, not life on land
Our understanding of when the very first animals started living on land is helped by identifying trace fossils -- the tracks and trails left by ancient animals -- in sedimentary rocks that were deposited on the continents.
from Latest Science News -- ScienceDaily https://ift.tt/2QrB081
from Latest Science News -- ScienceDaily https://ift.tt/2QrB081
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