H. Pettijohn on Nostr: Happy #FossilFriday! While not true fossils, ripple marks can help indicate where ...

Happy #FossilFriday! While not true fossils, ripple marks can help indicate where fossils may be found. As they are often formed by moving water, ripple marks and other sedimentary structures give evidence of where water used to be.
#paleontology #ichnology