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Showing results for tags 'House Range'.
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A rangeomorph holdfast trace fossil from the Ediacara formation, Rawnsley quartzite of the Flinders Range, South Australia. This specimen is Medusina mawsoni, so called because it was until recently thought to be a jellyfish, but is now believed to be the attachment point of a fractal rangeomorph as Charniodiscus is the point of anchorage for Charnia sp. This one may have been the holdfast point for some species of Rangea. The diameter of the outer circle is 1.5 cm and the fossil is estimated to be 555 million years old.
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From Utah in House range/Wheeler shale. Selkirkia willoughbyi worm?
Anna Marie posted a topic in Fossil ID
1-1/2" (3.81 cm) long. Head/tail areas still seem buried in matrix. Caught my eye as it looks nothing like the Margaretia dorus algea there. Thanks for any help!- 7 replies
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From the album: Nautiloid’s Trilobite Collection
This is another specimen of one of my favorite trilobites. This little guy comes from the Lower Ordovician Fillmore Formation of Utah. Acquired from an old collection.© Owen Yonkin 2022
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I collected this at Marjum Pass in the House Range. The beds are likely Wheeler Shale but almost certainly middle Cambrian. Trace fossil or scour mark? The ruler is marked in centimeters, so an individual grove is about a centimeter long.
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Eldonia sp. Part and counterpart from the House Range in Utah, the pride and joy of my collection. Just look at that beautiful circular gut!
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I recently purchased a 40lb box of shale from U-Dig Fossils in Utah. Mid-Cambrian, Wheeler Shale Formation, House Range, Millard County, Utah. This morning after work, I split a smallish piece & one side had an odd dent, the other had an indistinct, slightly raised shape that sort of looked like a trilobite, so I started trying to find out if it was. This was the result. Using dental picks, a needle in a small pin vice, a # 428 Dremel wire brush (by hand) & another small, round nylon brush (Dremel) in another pic vice... and lots of patience. I think it's most of an Elrathia Kingii minus the cheeks (of course) measuring 1.5 cm in length. It isn't the cleanest & I have a bit more to do, but I wanted to "show it off" as it were. And see if I got the I.D right. Not the greatest quality pic, but I've also been up for almost 24 hours, so it may just be my imagination (pic quality or that I actually took a pic).
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Hey everyone, I just got back from an amazing trip to Utah and Nevada collecting a host of trilobites. I am going to try and post some photos of that trip in the next day or so. I never seem to be able to find the time anymore! This find was pretty much the trip maker for non trilobite finds. I found this soft tissue arthropod in the house range in rocks known to have Burgess Shale fauna. So far this doesn’t seem to line up with anything I’ve seen in the Burgess. I’ve had 2 suggestions on an identification. Canadaspis perfecta is the best guess so far however there are glaring differences. The similarities to Canadaspis would have me thinking this could still be related (family or genus level?) as it shares the same body plan but with different proportions. The other suggestion was Eldonia but I’m far more skeptical of that. to me this is clearly some type of arthropod with a distinct head, carapace, body segments and legs. If it has a name I don’t seem to have the reach in my research tools to figure it out. The gut tract is also preserved in this specimen too. This has been confirmed by reputable sources so that also makes this even more wild of a specimen. If this turns out to be something unknown to science that would sure be a surprise....we seem to have slapped names on almost everything at this point lol. here is a photo of the slightly more detailed side. Here is a little diagram showing anatomy. searching desperately for my scale bar (eye roll emoji lol).....one I find a good scale I’ll put up another photograph. It’s only about an inch or prolly 3-4cm tip to tip in a straight line not measuring the curve of the animal. If anyone with Burgess Shale knowledge or some deep pocket knowledge on Cambrian arthropods want take a guess, let me know what you think! Al
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From the album: Trilobites
7mm. long. Type specimen was originally named Ptychoparia. Synonym: Deissella Middle Cambrium From Antelope Springs, House Range, Utah Thanks to Tony (ynot) for this one.-
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Well, I'm headed up and ready to go. Been planning this trip for five months! obviously nothing to report yet, but I'm hoping a little pre-game Q and A with you guys might help me raise the safety factor. I'm traveling solo and I have never been to Millard county. No worries though, as desert camping and travel goes, this is an easy one for me. Three weeks in the Atacama on foot was far riskier! Death Valley, the Mojave, and Baja aren't too tough. Anyway: I've been scouting the works of Smith, Wilson, and about twenty other geologists and paleontologists to try my hand at places like Cowboy Pass, Camp Canyon, the red coral of the Foote range and Marjum pass in addition to the "tourist" sites like Fossil mountain in The Barn, reliable U-Dig, Fossil Butte and the fish quarries and my childhood dream, Dinosaur National Monument. ( I blame you all for everything but UDig and Dinosaur....first heard of those other spots on here or on members sites) Right now, I'm worried about road conditions in Millard county. Very hard to find recent reports and it looks like the weather was wet and floody. I plan to BLM camp for the entire trip of only for the quiet and some armchair astronomy. I don't use GPS or Internet maps, just topos, a recent road atlas, and my trusty Brunton transit. Any safety/weather/driving tips I should know before I get there?
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Found during a trip out to a hill right adjacent to U-Dig Fossil Quarry. The trip report can be FOUND HERE. This is the largest I've collected. Typical sizes I've found are 3-6mm in length, 1-3mm in width.
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- agnostid trilobite
- delta
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