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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.
Real American Indian arrowhead found in Dripping Springs ,Texas.
Fossils: crinoids and trilobite
Sea Urchin spine fossil.  The close-up image shows a  sea urchin fossil from the jurassic period inside a limestone.
View of a tridactyl footprint fossilised on the rock known as Fossil track or Ichnite, Mosqueruela, Spain
Rudists embeded in sandstones, cross sections.\nCretaceous marine fossis near Barcelona.
Fossil footprint of Velociraptor
34 million year old fossil plant parts.
An axe head carved from stone and attributed to Native Americans found in and around what is now North Carolina.
Devonian cronoid fossils in limestone matrix. Largest is about 1/4\
Close up shot of cleaning skeleton of prehistoric human or animal from sand with tools and brush. Archaeologist works with fossil bones of extinct dinosaur in archaeological lab. Archaeology concept.
Many Bivalvia Fossils inside a limestone rock. Gastropods from the jurassic period captured as close-up during summer season.
Shark Tooth
Stone texture background
Fossilized leaf. Selective focus. Close-up, background and texture.
Primitive Living Fossil
Mosasaur Jaw Bone
Fossilised Fish
Aquatic animal fossil, Mesolimulus Walchi or Horseshoe Crab 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.
Fossils from the Devonian period are embedded into the limestone at the Falls of the Ohio State Park in Indiana
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.
foisl form sea animals that become stones
Fossil sea shells imbedded in rock at Capitola City Beach, California, USA.
White rock texture. Gray stone background. Rough rocky surface with cracks. Grunge background
Magnified close up of a rounded cracked sandstone rock.
Fossilized bone embedded in stone.
An Ammonite inside a limestone on an agricultural field. The ammonites where living between 409 and 65 million years ago (Mya).
Imprint of an ancient plant on a stone in the hands of a man
Primitive fish fossil
Free Images: "bestof:Trace fossils Bull Fork Ordovician OH.JPG en Trace fossils from the Bull Fork Formation Upper Ordovician ; Caesar Creek Ohio; collected by Curtis Davies"
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Cascades_on_the_Left_Fork_of_Rock_Creek,_Elk_Mountains._Gunnison_County,_Colorado._1873..jpg
SLNSW 34945 Friesian Bull.jpg
SLNSW 51577 Champion Friesian bull.jpg
SLNSW 7708 Champion Guernsey bull.jpg
SLNSW 7707 Champion Guernsey bull.jpg
At_the_Bend_in_Conneaut_Creek_by_Junius_Sloan.jpg
SLNSW 14136 Cattle judging at Liverpool Show Jersey bull progeny section.jpg
SLNSW 41275 Opening of Methodist Old Peoples Home Bull Street Mayfield.jpg
SLNSW 43040 Margaret Shaffhauser with bull terrier dog at the Canine Association Show.jpg
SLNSW 41498 Representive baseball players from Newcastle representing NSW Country against Victorian Country From left J Bull R Rice G McCabe L Balks at front H Davidson captaincoach.jpg
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Elizabeth Bacon Custer - Brady-Handy.jpg
StateLibQld 1 134973 Queen Street, Brisbane, ca 1872.jpg
The Ancient Roads of Italy and Sicily nopng.svg
Trace fossils Bull Fork Ordovician OH.JPG
Xenocrinus baeri (Meek, 1872).JPG
Bull Fork Formation Caesar Creek Ohio.JPG
Cincinnetina meeki (Miller, 1875) slab 2.jpg
Petroxestes pera Ordovician Ohio.jpg
Flexicalymene meeki pygidium view.JPG
Flexicalymene meeki cephalon view.JPG
Calapoecia huronensis Billings, 1865 top.jpg
LibertyFormationSlab092313.jpg
Streptelasma divaricans (Nicholson, 1875).jpg
Gypsum flower Saluda.jpg
Stigmatella personata.jpg
Constellaria polystomella Liberty Formation.jpg
OrdHdgd03.jpg
Petroxestes borings Ordovician.jpg
RusophycusOrdovician.jpg
SphenothallidHoldfastOrdovician.jpg
Trepostome on Hebertella richmondensis.JPG
Ropalonaria large 010213.jpg
Ordovician Kope Encrusted Concretion.JPG
Liberty Hardground 090114.jpg
Zygospira modesta Waynesville collection.jpg
Limestone etched section KopeFm new.jpg
Trypanites01.jpg
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LibertyBorings.jpg
Catellocaula.jpg
EntobiaVoigtoporaCoonCreek.jpg
Syneresis Cracks Drakes Formation Adams Co OH Ordovician.jpg
KopeCobbleOrdovicianKY.jpg
Protaraea.jpg
Heterotrypa Corryville.JPG
Cornulitids and bryozoan Bellevue.jpg
Rafinesquina ponderosa (Hall) ventral.JPG
Anomalodonta gigantea Waynesville Franklin Co IN.JPG
Stigmatella personata thin section.jpg
Cincinnetina meeki (Miller, 1875) slab 3.jpg
Helminthopsis01.JPG
Palaeophycus01.JPG
ZygospiraAttached.jpg
Bryozoa Hallopora2.jpg
Tuscarora2.jpg
Entobia Prairie Bluff Chalk Formation Cretaceous.JPG
Miocene Bored Cobble Cut labeled.jpg
Flexicalymene retrosa Ordovician Ohio.jpg
PlatystrophiaOrdovician.jpg
IsotelusHypostome.JPG
FavositesOrdovicianIndiana.jpg
OrdCrinoidHoldfasts.jpg
Rhynchotremadentatum.jpg
CambrianRusophycus.jpg
Esthoniopora Kukruse.jpg
AsteriacitesUtah.jpg
OrdNautiloidInternalMold.jpg
PetrocraniaOrdovician.jpg
Leptaena ventral dorsal Iowa.jpg
FavositesThinSection.jpg
Onnia Ordovician Alnif Morocco.png
DiscoscaphitesirisCretaceous.jpg
HadrodusCretaceousIsrael.jpg
ScapanorhynchusCretaceousIsraelTwo.jpg
Hardground oblique Ordovician 071514c.jpg
Pattersonia ulrichi Rauff, 1894.JPG
CrinoidHoldfastRoots.JPG
GastrochaenolitesMatmor.jpg
Reedsville Fm calc ss.jpg
Coprolite 4780s.jpg
Diplichnites.jpg
Naticid borehole Calvert.jpg
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Rogerella elliptica Jurassic.JPG
OysterBryozoansCoonCreek.jpg
MeadvilleConcretion091912.jpg
Densastroma pexisum section.jpg
CamelFootprintBarstowMiocene.jpg
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