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Devonian fossils in limestone matrix include bryozoa, crinoid, and brachiopod fossils. Largest pieces are about 1/2 inch (10 mm). Fossil and Prairie Park Preserve, Silos and Smokestacks National Heritage Area, Rockford, Iowa, USA.
coral fossil texture as very nice geology background
Close up of a multitude of fossil crinoids
Sea shells fossil imprint on stone, petrified prehistoric extinct mollusk in sandstone or limestone. Building wall with fossil close-up for texture background. Paleontology, geology and time concept.
Family enjoying vacations in Dorset, United Kingdom. \nThey are walking on the Lyme Regis Fossil Beach and looking for fossils.\nCold and windy overcast day.\nShot with Canon R5
Shark Tooth
Ammonite fossils in limestone. The ammonites where living between 409 and 65 million years ago (Mya). The fossils where found in the canton of Aargau (Switzerland).
Close up of an Ammonite Fossil
full frame macro Muschelkalk limestone closeup
Rudists embeded in sandstones, cross sections.\nCretaceous marine fossis near Barcelona.
Macro photo of Sternberger Kuchen, a Tertiary sandstone with fossils from Northern Germany.
Ammonite and Orthoceras Fossil preserved in the rocks mined from the reserve found in the Middle Atlas Mountains of Morocco
Fossil Oyster
Three teenage kids enjoying summer vacations in Dorset, United Kingdom. \nCloseup of a large stone and ammonite fossils visible inside it.\nLyme Regis Fossil Beach.\nCold and windy overcast day.\nShot with Canon R5
Fossil of a large shell in yellow-red limestone. Coast of Algarve, Portugal
Ammonite inside a limestone rock. The ammonites where living between 409 and 65 million years ago (Mya). The image was captured in the canton of Aargau (Switzerland).
A rocky outcrop of strata of black, or dark grey limestone and blue lias mudstone geology of the Jurassic, Triassic and Cretaceous periods of the Mesozoic era, rich in fossils of between 250 - 65 million years ago, along the cliff shore along the stony pebbles of the shingle beach of the Jurassic Coast coastline, Lyme Regis, England, UK
Jurassic Coast cliff detail
Closeup detail of a chalk cliff rock face seen in Normandy, France
Strunjan cliff: .An 80 meters high cliff along 200 meters of the coast, a natural reserve and is the highest flysch cliff in the east part of the Adriatic.
Ammonite fossil in lower right, on Lyme Regis' Monmouth Beach to the west of town. Lyme Regis is on England's Jurassic Coast, famous for ammonite and other marine fossils.  The fossils wash out of the cliffs shown in the background.
Abruzzo, Italy: fossil shells enclosed in the sedimentary rocks of a mountain river in the Gran Sasso Monti della Laga National Park, sign that the mountain range was once submerged
One of the views from the clifftop of the famous White Cliffs Of Dover, landmark, in the United Kingdom.
Fossil Shells  on a sandstone rock. The image was captured in Switzerland (Lucerne).
sea shells fossil texture as very nice background
Fossilized ammonite in limestone on a sidewalk, weathered by time.
Chalk cliff closeup near Etretat, a commune in the Seine-Maritime department in the Normandy region of Northwestern France
The chalk and sandstone cliffs are constantly being eroded and collapsing on to the beach.  This shows the different coloured rock strata and cracks between them that make them exceptionally unstable.
Geological rock layers exposed with erosion over millions of years.
Marine mammal bone (Cetacea) and other fossils outcrop on the beach at Capitola City Beach, California, USA.
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