Sharktoothguy11222 Posted June 1, 2008 Share Posted June 1, 2008 This one is from the PCS phosphate Mine in Aurora, NC. It measures 1 3/4" Slant Length. It might be an extinct species, such as Isurus retroflexus, Isurus precursor, Isurus desori or something else. But it might also be from an extant species, such as Isurus oxyrinchus (Short-Fin Mako) or Isurus paucus (Long-Fin Mako). Any input is welcome, Thanks! Tha tighin fodham, fodham, fodham! Link to comment Share on other sites More sharing options...
Northern Sharks Posted June 1, 2008 Share Posted June 1, 2008 It looks as though the enamel on the back extends up onto the root and forms a "ridge". If so, it's Isurus retroflexus. There's no limit to what you can accomplish when you're supposed to be doing something else Link to comment Share on other sites More sharing options...
Guest bmorefossil Posted June 1, 2008 Share Posted June 1, 2008 we have a bunch of them, it is an upper desori Link to comment Share on other sites More sharing options...
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