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SAND TIGER TOOTH #1A.JPG

Dpaul7

By Dpaul7

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Fossil Sand Tiger Shark Teeth
 
SITE LOCATION: Aurora, Beaufort Co., North Carolina, USA
TIME PERIOD: Miocene age (5.3-23 Million Years Ago)
Data: The sand tiger shark (Carcharias taurus), grey nurse shark, spotted ragged-tooth shark, or blue-nurse sand tiger is a species of shark that inhabits subtropical and temperate waters worldwide. It inhabits the continental shelf, from sandy shorelines (hence the name sand tiger shark) and submerged reefs to a depth of around 191 m (627 ft). Despite its name, it is not related to the tiger shark Galeocerdo cuvier; however, it is a cousin of the great white shark Carcharodon carcharias. Differentiating different species of sharks is usually done by locating and measuring their fins. The second dorsal fin and the anal fin of Carcharias are very large. In fact, they are about equal in size. The pectoral fins are triangular and only slightly larger than the dorsal fins. The teeth are very long and narrow with sharp points. The teeth are smooth with no ridges. The tail is one third of the entire body size. Sandtiger Shark - Carcharias sp. teeth: long, slender, smooth-edged blade, small, secondary cusplet on either side of main blade, strongly bilobed root, large lingual protruberance (bulge) and nutrient groove at center of root. Many 'species' have been named, but the fossil teeth are difficult to distinguish from one another as well as similar genera, such as Odontaspis and Striatolamna.
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: Lamniformes
Family: Odontaspididae
Genus: Carcharias

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Photo Information

  • Taken with Canon Canon PowerShot SX120 IS
  • Focal Length 7.3 mm
  • Exposure Time 1/60
  • f Aperture f/3.2
  • ISO Speed 80
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