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Fort Clinch is a 19th-century masonry coastal fortification, built as part of the Third System of seacoast defense conceived by the United States. It is located on a peninsula near the northernmost point of Amelia Island in Nassau County , Florida .
The Fort Clinch State Park is a Florida State Park, located on a peninsula near the northernmost point of Amelia Island, along the Amelia River. Its 1,100 acres (4 km 2 ) include the 19th-century Fort Clinch , sand dunes, plains, maritime hammock and estuarine tidal marsh .
At the beginning of the 19th century, several authors including Swiss paleontologist Louis Agassiz eventually demonstrated the affinities of Ptychodus teeth with those of elasmobranchs (rays and sharks). The first discovery of Ptychodus teeth in Kansas came in 1868 when Leidy reported and described a damaged tooth near Fort Hays, Kansas.
The really dark shark teeth, Dunn said, are millions of years old and more commonly found. The lighter teeth, beige or pearly in color, fell out more recently.
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Any fossils, including fossil shark teeth, are preserved in sedimentary rocks after falling from their mouth. [13] The sediment that the teeth were found in is used to help determine the age of the shark tooth due to the fossilization process. [15] Shark teeth are most commonly found between the Upper Cretaceous and Tertiary periods. [16]
The burials found in Mound 3 were ranked into 3 levels: the elite who were buried with the most-elaborate copper items, pearl beads and shark-teeth-adorned clothing, the middle rank who were interred with stone axes or shell/bead necklaces, and the low-ranked who did not have any high-status grave goods.
It was real. Despite all the Internet naysayers, the widely shared video of a creature that greatly resembled a shark swimming around the floodwaters of Fort Myers is apparently legit.