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fossil trilobite imprinted in the sediment
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).
Fossil sea urchin in stone (Scutellidae) on the rocks of Gozo island, Malta
Magnified close up of shale with multiple trilobite fossils.
Fossilized fish
Fossilized remains of ancient marine life creating an interesting natural pattern on a rock surface
Rudists embeded in sandstones, cross sections.\nCretaceous marine fossis near Barcelona.
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 ray-finned fish (Promecosomina) dating from Triassic period.
Fossilised Fish
Isolated on white.
Fossil Fern inside carbon rocks. The image was captured in the Swiss Alps.
Trilobites fossil from Middle Ordovician Era. Selective focus
Abruzzo, Italy: fossil shells enclosed in the sedimentary rocks of a mountain river in the Gran Sasso Monti della Laga National Park, sign that the mountain range was once submerged
Beautiful fossil of some sort of dinosaur reptile from Madagascar, isolated on a white background
Fossil Devonian brachiopod isolated on white background.
Ancient fish fossils are on a rock
Fossils of marine life.Ammonite fossils
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.
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.
coral fossil texture as very nice geology background
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).
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.
Chiton, Tripoplax regularis. on a rock at Salt Point State Park in Sonoma County, California.
Petrified fossil crinoids (sea lilies, featherstars) in stone
Double elrathia Kingi trilobite fossils superimposed.
Photo of Dinosauro Antonio, Tethyshadros insularis
Primitive fish fossil
Free Images: "bestof:Fossilcricket.jpg en Fossil Cretaceous cricket Family Gryllidae from Brazil on display at the San Diego County Fair California USA Own Stickpen 2009-06-29"
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