sandstone - teaching hand specimen of Jurassic fine-grained white Nava – Geological Specimen Supply
File:Zoophycos in fine-grained sandstone (Henley Member, Borden Formation, Lower Mississippian; Tener Mountain roadcut, southern Ohio, USA) 10 (49039639416).jpg - Wikimedia Commons
Land outcrops. The outcrops are mainly composed of fine-grained to medium-grained sandstone and alternating layers of clayey siltstone sediments. Zivt Stock Photo - Alamy