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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.
Ancient fish fossils are on a rock
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).
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.
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.
trilobite fossils on white isolated background.
Microscopic photo of a thin section of calcareous tufa of Holocene age.
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.
Scleractinia coral fossil specimen for education. Scleractinia, also called stony corals or hard corals. Scleractinian corals evolved from soft-bodied ancestors in the Middle Triassic period.
Fossils of marine life.Ammonite fossils
Trilobites fossil from Middle Ordovician Era. Selective focus
Magnified close up of shale with multiple trilobite fossils.
Elrathia Kingii Trilobite fossil in shale stone (Cambrian age). (shallow dof)
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
A fish fossil found in a rock near italian beach
Rheum officinale, Chinese rhubarb, Rheum palmatum L.
Fossil & Ammonite for fuel energy
Fossilised Fish
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.
complete pyritised Leonaspis (Kettneraspis) sp. trilobite from Morocco
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).
Old stones background. imprint of an ancient ammonite from the Mesozoic era.
fern fossil
close up on Trilobite fossil isolated on white background
Fossilised Fish
trilobite animals texture
Close up of transparent container holding a mini Mexican Black King Snake for sell.
A trilobite fossil
Fossil Fern inside carbon rocks. The image was captured in the Swiss Alps.
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