525-million-year-old fossil defies textbook explanation for brain evolution | University of Arizona News
Lasting Impressions: A Guide to Understanding Fossils in the Northeastern United States: Edelstein, Karen, Edelstein, Karen L., Sayre, Tamara: 9781577531821: Amazon.com: Books
Remarks on some fossil impressions in the sandstone rocks of Connecticut River: Silsbee, George M., Warren, John Collins, Boston Society of Natural History: 9781245401012: Amazon.com: Books
Haul of Fossil Fish Pushes Back the Origin of Teeth and Jaws | Science| Smithsonian Magazine
Neel Extra Capacity Trifold Wallet in Black – Lasting Impressions
Meet the Dinos of 'Deep Time' | At the Smithsonian | Smithsonian Magazine