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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.
Microraptor gui fossil, Early Cretaceous.
Nearly a thousand years ago natives inhabited the lower elevations around the San Francisco Peaks of Arizona. In an area so dry it would seem impossible to live, they built pueblos, harvested rainwater, grew crops and raised families. Today the remnants of their villages dot the landscape along with their other artifacts. These petroglyphs were found on Magnetic Mesa in Wupatki National Monument near Flagstaff, Arizona, USA.
Keichousaurus hui sauropterygian fossil from China
Detail of a fossil Ichthyosaurus.
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
Fossilized fish
Petroglyphs on a rock in Arizona near Phoenix.
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.
The fossil of a fish in grey slated stone
Rudists embeded in sandstones, cross sections.\nCretaceous marine fossis near Barcelona.
Isolated on white.
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
Millions of Years Old Bird Fossil
Beautiful fossil of some sort of dinosaur reptile from Madagascar, isolated on a white background
Fossil Fern inside carbon rocks. The image was captured in the Swiss Alps.
Detail of a fossil Ichthyosaurus.
Trace of ammonite fossil on the beach at Lyme Regis, Dorset, uK
isolated on black.
Marine mammal bone (Cetacea) and other fossils outcrop on the beach at Capitola City Beach, California, USA.
Close up of an Ammonite Fossil
Fossilised Fish
Photo of Dinosauro Antonio, Tethyshadros insularis
Ammonite and Orthoceras Fossil preserved in the rocks mined from the reserve found in the Middle Atlas Mountains of Morocco
Fossil male freshwater stingray from the eocene period found in the Green River Formation in Wyoming
Fossils in the rock in the Sierra de Francia, Salamanca
Mesolimulus is an extinct genus of arthropod. The best known examples are found in Solnhofen limestone near Solnhofen, Bavaria, Germany. Originally assigned to the living genus Limulus, they are related to and look virtually identical to the modern horseshoe crab. Other species assigned to Mesolimulus have been recorded from Spain, Siberia and (questionably) from Lebanon.
Primitive fish fossil
Free Images: "bestof:Ordovician fossils of north China BHL23954358.jpg Ordovician fossils of north China by Amadeus W Grabau with plates I-IX and 20 text figures 23954358 77376"
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