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Showing results for tags 'aphelaspis brachyphasis'.
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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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I did not think that I was going to have time to hunt Georgia Cambrian trilobites – Aphelaspis brachyphasis from the Conasauga Formation, but I did find a couple hours to collect. So this morning I left at 7 AM and drove one and a half hours to Murray County, Georgia to collect at a small exposure on the Consssuga River. It was a cold morning, 31°, even by my Chicago standards for October. The purpose for this visit visit was to gather some matrix for winter work. If you have a chance to visit this site, besides being abundant , many of your finds will have multiple trilobites on the mudstone. Below are a couple pics of the area, as well as some of the trilobites that I found.
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Well I did not have much luck opening Mazon Creek concretions today, so I figured that I would try something about 190 Million years older, so tonight I was whacking Conasauga shale matrix from Murray County, Georgia, looking for Cambrian Aphelaspis brachyphasis trilobites. I did not go through much matrix tonight, but I did find a few trilobites, but the ones that I found do not represent the quality of trilobites that come from that location. As I continue to go through this matrix, I guarantee that I will find some pretty specimens and I will post my finds. Here is what I found tonight-
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