Caleb Scheer – Midwestpaleo.com
Tap image to make larger.
This is an exceptionally clear photo.
If you go to “View” and then “Zoom”, you can study it at 2-400% enlarged.
Hash Plate
Platteville Formation, Mifflin member
Middle Ordovician
Southwest Wisconsin
Dimensions roughly: 6in long, 3.5in wide, 1.5in thick
Weight: estimated 2lbs
From DeMolt’s 1963 paper, trilobite graph redone by Caleb Scheer.
The orginal post on thefossilforum.com can be seen here:
http://www.thefossilforum.com/index.php?/topic/42187-hash-plate-from-wisconsin/#entry460298
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