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Showing results for tags 'amygdalocystite'.
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Honestly I seriously thought about not posting this find from yesterday. I did not want any of you thinking that the fossil gods where being grossly unfair. But then I decided that in all likelihood most of my comrades here on the forum will never have seen one of these, never mind one this is pretty much as good as you find them. Promise not to submit it for IPFOTM. Four of us were out collecting splitting a lot of rock and excavating near the area that I found those two amazing Astrocystites a few weeks ago (August Invertebrate Fossil of the month) After a very unproductive 5 hours two of my friends gave up and headed home leaving the two regular diehards (Myself and J.) Seeing as no one had found anything of note splitting rock in the blast piles, we both decided decided to work on excavating the wall about 25 feet from the area that produced the astrocystites and a wealth of other cystoids and edrioasteroids. After about 8 hours of wall excavating J. was rewarded with a gorgeous complete extra large pleurosystites. As for myself I somehow once again lucked out finding this spectacular Amygdalocysties florealis. Only a few of these are found each year at this site and rarely are they as complete as this. This is a class of echinoderms known as paracrinoids. There are only two species represented in southern Ontario the Comarocystities and this one the amygdalocystites. These only occured in the Ordovician. I guess they were a failed experiment. This specimen was found at the top of the BobCaygeon formation. Here is what they look like...... very weird........ but cool Believe it or not I spent about 5 hours prepping this with 40 micron dolomite, .015 nozzle and 18 PSI. Here is the before picture. I actually knew what it was in the field because of the distinctinve pattern of the plates. I aslo could see that it had a stem and at least one arm in the field. I had to field douse it thoroughly in Cyano as it looked like it was ready to flake off the plate at the slightest tough. Here it is as found.... (not much to look at) Here it is prepped The finished creature is 35 mm x 20 mm wide The whole plate which also has a small crinoid on it.