The ratios of strontium isotopes in fossil shark teeth can be used to better understand ... including major sea-level fluctuations and the Great American Biotic Interchange—the migration of ...

Our study was one of the first to date Florida coastal deposits using fossil shark teeth and a technique that ... including major sea-level fluctuations and the Great American Biotic Interchange ...

(MENAFN- The Conversation) The ratios of strontium isotopes in fossil shark teeth can be used to better ... Our work provides a more precise date. During the Great American Biotic Interchange ...

The ratios of strontium isotopes in fossil shark teeth can be used to better understand how coastal environments evolved ... Our revised age calibrations coincide with global events, including major ...