Lockeia Fossil
Wikimedia Commons
commons.wikimedia.org
Wooster Geologists
https://woostergeologists.scotblogs.wooster.edu/2017/04/07/woosters-fossils-of-the-week-bivalve-escape-trace-fossils-devonian-and-cretaceous/
Lockeia Fossil
Adventure Tectonics
www.adventuretectonics.co.uk
