TMNH Posted March 30, 2013 Share Posted March 30, 2013 I found this last weekend and have been working to piece it together over the week. It is the cephalon of a large Isotelus maximus from the late ordovician Georgian Bay Formation. There are still some pieces that I have not been able to fit back together, but this is most of it. Its a bit rough looking, but it is a large specimen and I had some fun preparing it, so I figured it warranted a post here. The whole specimen measures about 15 cm between the two genal spines, which I freed of matrix. The whole trilobite was probably something like 25 cm long. This is another large chunk that was disarticulated from the rest of the specimen, perhaps part of the cranidium. Link to comment Share on other sites More sharing options...
Bev Posted March 30, 2013 Share Posted March 30, 2013 Orthocone Cephalopod Found 3.29.13 in Fillmore County, Minnesota, USA Ordovician Era Stewartville member of the Galena Formation I found it in the rock like this. It lifted right out. All I did was wash it off. There are some tiny crinoids embedded in the bottom of the ceph. And there appears to be sphincle (spelling?) of another ceph beside it in the rock. My personal best and most complete ceph find ever. Bev The more I learn, I realize the less I know. BluffCountryFossils.NET Fossil Adventure Blog Go to my Gallery for images of Fossil Jewelry, Sculpture & Crafts Pinned Posts: Beginner's Guide to Fossil Hunting * Geologic Formation Maps Link to comment Share on other sites More sharing options...
Archimedes Posted March 31, 2013 Share Posted March 31, 2013 (edited) My entry for fossil of the month was found on March 27th, on a cold snowy day, and rough prep on March 30th, to be finished up later. Onychocrinus pulaskiensis with stem and three others on the slab, one at the 10-11 inch mark, one at the 2 inch mark, and one just below the surface at the curve in the stem Bangor Limestone, Upper Chester, Upper Mississippian NW Alabama Edited March 31, 2013 by Archimedes Link to comment Share on other sites More sharing options...
Mike from North Queensland Posted March 31, 2013 Share Posted March 31, 2013 (edited) My entry this month is a couple of Placoid scales from a shark or ray. Found on the 3rd and 11th march Toolebuc formation - Albian Cretaceous For size the graph paper in the background is in 1 mm squares. The smaller I seived out on the 3rd and the other on the 11th of march out of the same bucket of matrix and as they are quite rare from the area I am classing them as associated material. They are from the Richmond fossicking area in central Queensland Australia. Mike Edited March 31, 2013 by Mike from North Queensland Link to comment Share on other sites More sharing options...
Archimedes Posted March 31, 2013 Share Posted March 31, 2013 My vertebrate entry for the month is a Petalodus tooth found March 27th and clean up on March 31st, a cute two tone tooth. Petalodus tooth Bangor Limestone, upper Chester, upper Mississippian NW Alabama Link to comment Share on other sites More sharing options...
Missourian Posted April 1, 2013 Share Posted April 1, 2013 Undetermined vertebrate Winterset Limestone, Pennsylvanian Jackson County, Missouri Context is critical. Link to comment Share on other sites More sharing options...
JohnJ Posted April 1, 2013 Share Posted April 1, 2013 Undetermined vertebrate Winterset Limestone, Pennsylvanian Jackson County, Missouri April-fools!.jpg Auspex is packing for Missouri. The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
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