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Showing results for tags 'ophiuroids'.
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Jurassic, Callovian, Oxford Clay, Peterborough Member, Yaxley, Cambridgeshire I've found a few of these recently, and been trying to puzzle them out. I had thought they might be crab claws. Today I found my largest and best preserved one so far. I can clearly see plates, but I haven't found plates on images of Jurassic crustaceans, including in Martill. What it more looks like is the diagram of Ophiuroids in the book, which is what @JamieLynn, suggested might be the case, due to the plates. I have found brittle star at the site before, but the preservation was very different, not at all pyratised. So I'm wondering if this is Ophiroid, crustacean or something else entirely. If crustacean I was wondering about Thalassinidea, because I find so many burrows. I've attached images of the fossil and images from this article for comparison: https://www.cambridge.org/core/journals/journal-of-paleontology/article/brittle-stars-from-the-british-oxford-clay-unexpected-ophiuroid-diversity-on-jurassic-sublittoral-mud-bottoms/8B34E184DFCF1CEEE275194CE2498B17 Any help would be greatly appreciated. The ends I find particularly fascinating.
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My Very Rare Northern Ohio Brittle Star, Strataster Ohioensis
ZiggieCie posted a topic in Member Collections
I was going through my fossils yesterday (7/24/2015) labeling them and adding them to my Database when this small shape caught my eye. Took out my magnifier and checked out a small shape, that at first glance, I thought was just a small Crinoid disk among the Carbonized Fern pieces. To my surprise, I had a Starfish staring back at me. Yes, I was very surprised! These are extremely rare in Northern Ohio’s, Meadville Shale, or anywhere else. I knew of another Brittle Star find that was written about, and was a new species (Strataster ohioensis). I knew that I had a copy of the PDF describing this rare find, but did not think that I had one of these in my hand. The original find of these is only from 1970, along the Ohio Turnpike. They are described as of, Kinderhook and early Osage age and 391.9 to 388.1 MYA. (No Fossil hunting on the Turnpike). Now excited about this very unlikely find, I study this 4x5 inch piece of slate and find not one Brittle Star but nine of them. I have the link to the PDF if anyone has the time to check and see if mine is very close to the described ones. http://deepblue.lib.umich.edu/bitstream/handle/2027.42/48462/ID311.pdf?sequence=2&isAllowed=y Here are some photos of my Strataster ohioensis? There are 9 Brittle Stars on this piece. Size in mm- 26 replies
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