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During a hunt in the upper Widder Fm (Devonian) in the Thedford area, I encountered these curious bits among the usual clatter of trilobites, brachs, and nautiloids. I have some ideas, but would like to see if they are on - or off - the mark. I've largely ruled out worm burrows as they appear in these shales as generally very thin and pyritized. They look like some form of plant matter, which would be a first for me in these shales. I've collected the positive and impression. It measures about 3 cm. They appear to have very fine, fibrous striations (although detail is wanting when using the iPad camera ). Could be something very underwhelming, but thought I'd canvass opinions! Thanks for having a look.
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- devonian
- plant matter?
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Yesterday, Deb and I spent four hours at our usual spot in Arkona looking specifically in the Widder Fm for Greenops and other related goodies. It was one of those lovely days where it isn't too hot or too chilly to get some real hammer time. First up is the bench I'll be working. This is from the very beginning of the day, left and right shots. I've been working on this bench for the last four or so trips. Where all the tools are resting is just below the rich Tornoceras layer wherein are also found a higher probability of full Greenops. Much of the stuff on top of that is bits or just brachs, shale that is dense and shatters or just comes out in chips. For this trip, I'll be focusing on following the "Torno layer" to the left and right of this bench, but it may also require some approaches from the top, and that means a heck of a lot of overburden and blank shale to remove (and I forgot to bring the pickaxe this time - derp!). And this is what it looked like after four hours. Sorry for the choppiness of the image as it was my attempt to stitch three shots in a panoramic. The second shot shows it from a distance, and the third shot where I am gradually connecting my bench to Deb's bench to the left.
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- greenops
- mid devonian
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Deb and me spent about 7 hours in Arkona at the Hungry Holllow site where we had an opportunity to dig with @Northern Sharks and @middevonian - both great guys to crack rocks with - and two fossil club guests who were being shown around for the first time. My day started off in the south pit where I fussed about in the coral biostrome of the HH member. There are some interspersed shale-y layers that can produce marine fossils other than coral. The high energy environment of its deposition means finding more or less fragments of trilos, a few brachs, pelecypods, bryozoan colonies, and crinoid stems/ossicles. Eldredgeops is by far one of the most common to find in these layers, but not so common to find full. That being said, they can come out fairly robust. We were finding some big fragments. In one (not pictured) that was half a cephalon, the eye alone was probably the size of a Tic-Tac. Pictured here is the biggest cephalon I pulled from the biostrome - a fairly plump glabella on this one: . E. rana are nice, but my real goal was to bag a full Pseudodechenella. No dice on that one today, but at least some Crassiproetus pygidium fragments: