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A spiral petroglyph at Chaco Culture National Historic Park in New Mexico.  Visible from a walking trail in the park, are numerous petroglyphs aka rock art..  This spiral looks like it's been recently enhanced.  The park is a major archeological site of the Puebloan culture, or Anasazi from around late 1000 - 1400 AD, and attracts visitors from all over the world.
Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are commonly referred as ammonites
Sea Urchin spine fossil.  The close-up image shows a  sea urchin fossil from the jurassic period inside a limestone.
fossile Schnecke
Fossils of marine life.Ammonite fossils
fossil trilobite imprint in the sediment Backlit by lamp.
Bighorn Sheep Petroglyphs, Fremont Indian Petroglyphs on sandstone wall, Pleasant Creek area in Capitol Reef National Park, Utah. Fremont Culture from about 600-1300 years CE
Fossil of a amonite in chalk rock
Natural material, such as a large stone with the imprint of a prehistoric creature, allowing the study of natural diversity during the dinosaur period and earlie
Ammonite on white background. The ammonites where living between 409 and 65 million years ago (Mya).
Archeological pre-historic cave man painting in South Africa
Fossils of marine life.Ammonite fossils
Ammonites fossil snail cut found in Teruel Sierra Albarracin of Spain
Close-up of an ammonite fossil dating from the Jurassic\nperiod.
Petroglyph of what looks like a snake, Eastern Arizona.
fossil of Ammonite in the stone on white, isolated
Close-Up Of Ammonite Against White Background
Ammonite inside a large rock. The ammonites where living between 409 and 65 million years ago (Mya).
natural mineral on a green background with crystal quartz crystals is a  beautiful background and an abstract, macro
A stock photo of a cross section cut from a beautiful Ammonite fossil shell.
Desert rocks aligned in a wagon wheel pattern as seen in the Hexie Mountains of Joshua Tree National Park.
Fossils of marine life.Ammonite fossils
Ancient Mayan (Yucatan) drawings in a cave in Cuba.
Prehistoric fossilized shell. The concept of the archaeological site
Ammonite imprint on Solnhofen limestone, from the Jurassic of Southern Germany
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
Lodz, Poland - October 20th, 2017: Precious ammonites and fossils for sale at the annual Intersotne fair in city of Lodz.
Ammonite Fossil preserved in the rocks mined from the reserve found in the Middle Atlas Mountains of Morocco
Free Images: "bestof:Gogia spiralis Utah.jpg en Gogia spiralis fossil from Antelope Springs Utah on display at the San Diego County Fair California USA own Stickpen 2010-06-16"
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Young female mummy from near Lupo, Peruvian Andes, about 550 years old - San Diego Museum of Man - DSC06926.JPG
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