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Showing results for tags 'agnostid'.
Found 11 results
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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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- paradoxides series
- slammestadt
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Hey all, I bought this trilobite from a seller today and was wondering if anyone could help me ID it. I'm pretty sure its from Utah, and I think it's an Elrathia, but I just want to get some other thoughts or opinions. In the bottom left there seems to be part of an agnostid, but I could be wrong. The seller said that they didn't know where it came from unfortunately.
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Hello again, still going back through my neglected trilobites. This one I had labeled in my mind as Elrathia+ Agnostid fragment. After learning a little more about trilobite ontogeny (https://www.trilobites.info/ontogeny.htm) I wonder if the partial agnostid may rather be a larva of Elrathia? Or can I rule that out by size? I hope the "adult" is sufficient for scale comparison. The more you learn the less you know. Best Regards, J
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I now have 2 slabs with Agnostids: One that I found last week, and one that I bought years ago at Fernbank Museum of Natural History. You know what to do: Show 'em if ya got 'em! This is the hash slab I bought with some Agnostids and Elrathria: And this is the Barrandagnostus inexpectans that I found last week up in Chatsworth. Probably my most proud find in the Conasauga shale:
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Hello for all. It has been a while to leave a post here! I am currently in Burlington, VT as a UVM student. Before the end of the summer recess (August 18), I traveled to northern Vermont consulting some articles about Cambrian and Ordovician formation located in Highgate Falls and South Hero. In this post, I will just talk about one trip to Highgate. I left my dorm around 11 a.m., and I get the Higate Falls near 1 p.m. After straying about 3 hours, I finally realized that the outcrops described as fossiliferous in the article are located in the private land.
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Well, i thought I'd show my primitive prepping skills. This is all rather unnecessary as Tony @ynothas already done this thread here and probably better and the pieces shown were kindly donated to me as well. So treat this as a repeat of what Tony does better. Hey ho. So these are the three pieces that Kind Tony sent me. 1. Notice this Elrathia kingii (1.2 cm long) has a break on the anterior margin (cause of death?) .and an upside down Itagnostus interstrictus (5.5 mm) above it and a piece of another to the right of it. 2. This Elrathia (1.8 cm long) has anot
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- wheeler shale formation
- wheeler shale
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I found a few lists of trilobite species from Utah, but am having trouble finding any information on telling the Agnostid species apart. Looking for some sort of papers, book, illustrations, pictures or something that can help me make sense of the differences between, say, Baltagnostus eurypyx, Itagnostus interstricta, Peronopsis interstricta, and etc. Thanks!
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From the album: Anomalocaris and friends.
Close up of Agnostid trilobite from the Mid-Cambrian Changhia Formation. Shandong, China. -
From the album: Anomalocaris and friends.
Close up of Agnostid trilobite from the Mid-Cambrian Changhia Formation. Shandong, China. -
From the album: Anomalocaris and friends.
Close up of Agnostid trilobite from the Mid-Cambrian Changhia Formation. Shandong, China. -
From the album: Anomalocaris and friends.
Small plate with several Agnostid trilobites. These guys were small, blind trilobites. From the Mid-Cambrian Changhia Formation in Shandong, China.
