New Members thatalguy Posted October 24, 2009 New Members Share Posted October 24, 2009 Hi. I am new to the forum and hope I get this right. These were found in southern Colorado by my aunt and sent to me to help with ID. They were "Found below Ft. Hay's Limestone and above Dakota Sandstone. Found with ammonites." They are about the size of a quarter. Any thoughts? Thanks, Al Link to comment Share on other sites More sharing options...
Guest N.AL.hunter Posted October 24, 2009 Share Posted October 24, 2009 ptychodus shark teeth Link to comment Share on other sites More sharing options...
Auspex Posted October 24, 2009 Share Posted October 24, 2009 Yup, Cretaceous "crusher" shark. Here's a link for more info: http://www.elasmo.com/frameMe.html?file=genera/cretaceous/ptychodus.html&menu=bin/menu_genera-alt.html "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Ron E. Posted October 24, 2009 Share Posted October 24, 2009 I'll defer to the experts (as a newb should) but I was going to say definitely not a blastoid. I CAN spot one of those. Link to comment Share on other sites More sharing options...
New Members thatalguy Posted October 24, 2009 Author New Members Share Posted October 24, 2009 Thanks!! I went to the sites and YEP, they are shark teeth. Thanks a bunch. My aunt will be thrilled. Al Link to comment Share on other sites More sharing options...
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