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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.
Dapalis Macrurus fish fossil from Aix-en-Provence, France
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).
Microraptor gui fossil, Early Cretaceous.
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.
Rudists embeded in sandstones, cross sections.\nCretaceous marine fossis near Barcelona.
Iguanodon dinosaur roaring while walking isolated in white background - 3D render
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.
Keichousaurus hui sauropterygian fossil from China
Fossil of ancient reptile in the rock
Dinosaur skeleton illustration
Fossilized dinosaur bones buried in the ground
plant Dandelion Fuzz W.M. under light mircoscope with white background
Leiden leaf c.s. under microscope
Part of a dromedary skeleton jaw in the Moroccan desert on a sunny morning.
Beautiful fossil of some sort of dinosaur reptile from Madagascar, isolated on a white background
Fossilized ammonite in limestone on a sidewalk, weathered by time.
Ancient fish fossils are on a rock
Bivalvia Fossils inside a large Ammonit. Gastropods from the jurassic period.
The fossil of a fish in grey slated stone
The head and neck of a aquatic dinosaur isolated on white with a clipping path
original Keichousaurus hui fossil from Guizhou Xingyi ,China isolated on white background
Skeleton of a dead dog in a dry area
close up on Trilobite fossil isolated on white background
Fish skeleton on black background
A very old fossil of a prehistoric fish on a stone
Natural ecology, stone, rust, texture, background, abstract, plain stone, rock, building material, shape, solid, marble, granite, sea stone, wall, floor, stone wall, color, nature, simplicity
Dinosaur fossils on sand stone background- detail.
Ancient rock art incised in a sandstone boulder.
Free Images: "bestof:Iguanodon sacrum.gif en Engraving of the fossil sacrum of an Iguanadon from Additional Observations on the Osteology of the Iguanodon and Hylaeosaurus Gideon"
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