Winter 2006/7: Sorting of Devonian (Frasnian) Fish Fossil Specimens from Rockford, Iowa 

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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same w/ scale
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same 'side view' w/ scale (sorry about the image quality)
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same, another version of previous image
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'new specimen' view a
(for scale, black background surface is 6 cm wide at top)
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'new specimen' view b
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'new specimen' view c
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'new specimen' view d
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enlarged section of 'new' (view b)
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further enlarged section of 'new' (view b)
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enlarged section of 'new' (view c)
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further enlarged section of 'new' (view c)
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