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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:
Ancient fish fossils are on a rock
Ohio Dovetail - Arrowhead - Isolated
Microscopic photo of a thin section of calcareous tufa of Holocene age.
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).
close up on fish fossil fish in the rock
Fossilized fish
Detail of a fossil Ichthyosaurus.
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.
Trilobites
Fossils of marine life.Ammonite fossils
A fossil of a germanodactyl in a stone slab
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).
Archaeopteryx marble imprint, fossilized imprint, imprint transitional form (mosaic form), of a theropod dinosaur. Replica of a lime-impression (limestone slab) from the Jurassic about 150 million years old.
close up on Trilobite fossil isolated on white background
Trilobite fossil (Cheirurus ingricus) from the middle Ordovician peroid (488.3 – 443.7 million years ago) . This specimen was found in Russia
Ammonite and Orthoceras Fossil preserved in the rocks mined from the reserve found in the Middle Atlas Mountains of Morocco
Close up of an Ammonite Fossil
Agate is a microcrystalline variety of quartz, chiefly chalcedony, cryptocrystalline form of silica.  Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks but can be common in certain metamorphic rocks. Most agates occur as nodules in volcanic rocks or ancient lavas where they represent cavities originally produced by the disengagement of volatiles in the molten mass which were then filled, wholly  by siliceous matter deposited in regular layers upon the walls. Cathedral Valley, Capitol Reef National Park, Utah.
Centriscus strigatus fish fossil from Poggio Berni, Italy
Photomicrograph of planaria, a flatworm, Dugesia species. Slight motion blur in head. Freshwater stream, San Luis Obispo, California. Live specimen. Wet mount, 2.5X objective, transmitted brightfield illumination.
Prehistoric fish fossil impint in stone isolated on a white background
Ammomite (Ammomoideae) fossil imprint on a limestone. The image was captured in the canton of schaffhausen during springtime.
Ammonite fossil imprint on prehistoric rocks
elrathia Kingi trilobite fossil in gray shale matrix.
isolated on black.
Fossilised Fish
trilobite fossil
Rudists embeded in sandstones, cross sections.\nCretaceous marine fossis near Barcelona.
Free Images: "bestof:Fossil Stygimoloch spinifer 001.jpg en Museum für Naturkunde Berlin Fossil Stygimoloch spinifer skull North Dakota USA; 66 million years old de Museum für"
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