Cretaceous shark tooth

 Cretaceous shark tooth from the Big Brook site, Monmouth County, NJ (at the Boundry Road bridge.) Overall length approximately 7mm. Imaged using a scanning electron microscope, secondary electron image, 18KeV. Note enamel, dentin, serrations and wear surface near tip.
Collected and imaged by Anne Argast.

©2004 A. Argast