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Winter 2006/7: Sorting of Devonian (Frasnian) Fish Fossil Specimens from Rockford, Iowa
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initial sort
Combined from entire collection:'top view' of 4 ptyctodont dental elements (left row); 1 unidentified 'plate'; 3 more ptyctodont dental elements. From 10-02-06:'new' unidentified specimen (see details below))
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