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Phacops rana (Eldredgeops rana) is a species of trilobite from the middle Devonian period
Ohio Dovetail - Arrowhead - Isolated
close up on Trilobite fossil isolated on white background
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
Ancient fish fossils are on a rock
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.
Rudists embeded in sandstones, cross sections.\nCretaceous marine fossis near Barcelona.
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.
complete pyritised Leonaspis (Kettneraspis) sp. trilobite from Morocco
Arrowhead- Knife Point Isolated; found in North Carolina
close up on Trilobite fossil isolated on white background
Magnified close up of shale with multiple trilobite fossils.
fossil trilobite imprinted in the sediment
Fossil Fern inside carbon rocks. The image was captured in the Swiss Alps.
Trilobites fossil from Middle Ordovician Era. Selective focus
Rheum officinale, Chinese rhubarb, Rheum palmatum L.
trilobite fossil
American Indian Arrowhead/Spear Point Artifact in Palm of Hand
Eoraptor skull on white, isolated
Ancient rock art incised in a sandstone boulder.
close up on Trilobite fossil isolated on white 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.
A single arrowhead on a white background.
Fossil ammonite fossil isolated on white background with clipping path
Devonian cronoid fossils in limestone matrix. Largest is about 1/4\
trilobite fossil texture as nice natural background
Double elrathia Kingi trilobite fossils superimposed.
Fossil of ancient reptile in the rock
Trilobite fossil of the species Metacanthina issoumourensis from  Djebel Issoumou, Morocco\nMiddle Devonian, 393 - 388 million years ago.
Free Images: "bestof:Trilobite clipart-vector.svg en Clip art show Trilobite Fossil in Rock 2015-06-07 Made vector version of File Trilobite clipart png Offnfopt other versions"
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