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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).
Ancient fish fossils are on a rock
An eroding rock with fossil inclusions surrounded by beach rock swash deposits.  These types of rocks are fairly common to find on NW USA beaches for those with a keen eye.
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.
Old stones background. imprint of an ancient ammonite from the Mesozoic era.
fossil of a trilobite. lived during time of Early Cambrian throughout the lower Paleozoic, during the Devonian til the end of the Permian See also my other Fossils and Mineral/ Crystal images:
Microscopic photo of a thin section of calcareous tufa of Holocene age.
Marine life fossils.
Trilobite fossil on stone, prehistoric extinct animal lived in Cambrian and Silurian seas. Big trilobite fossil of prehistoric era and rock. Concept of paleontology, evolution and Paleozoic fossil.
Ammonite (partially). The ammonites where living between 409 and 65 million years ago (Mya). The fossil was found in the canton of Aargau (Switzerland).
Fossil Sand Dollars
Knightia alta is an extinct genus of fish well-known from abundant fossils found in the Green River Formation of Wyoming, United States. They rarely exceeded 10 cm in length and are found throughout the formation. Knightia alta, Eocene Epoch, Green River Shale. Fossil.
Fossil & Ammonite for fuel energy
Magnified close up of shale with multiple trilobite fossils.
great beautiful ammonite on the shelf. fossilized remains. High quality photo
Fossils of marine life.Ammonite fossils
A trilobite fossil
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
Natural material, such as a large stone with the imprint of a prehistoric creature, allowing the study of natural diversity during the dinosaur period and earlie
Marine mammal bone (Cetacea) and other fossils outcrop on the beach at Capitola City Beach, California, USA.
Trilobites are a group of extinct marine arthropods that first appeared around 521 million years ago, shortly after the beginning of the Cambrian period, living through the majority of Palaeozoic era, bornit, bornite, cooper , cu5fes4, cambrium, sulfite
trilobite fossils on white isolated background.
complete pyritised Leonaspis (Kettneraspis) sp. trilobite from Morocco
Piece of natural mineral gemstones in gift store
Archaeologist cleans prehistoric human or animal bones after excavation under lamp using tools, examines ancient fossil remains of dinosaur skeleton. Male scientist works in archaeological lab.
Fossil Fern inside carbon rocks. The image was captured in the Swiss Alps.
Trilobites fossil from Middle Ordovician Era. Selective focus
Fossilised Fish
trilobite animals texture
Rudists embeded in sandstones, cross sections.\nCretaceous marine fossis near Barcelona.
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