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Showing results for tags 'gravicalymene'.
Found 5 results
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A nice Dictyonema flabelliforme dendroid graptolite from Oslo Fields in Norway. It's Tremadoc, Lower Ordovician in age and is thus maybe around 480 mya. Another angle :
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- amplexopora
- amplexopora septosa
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From the album: Nautiloid’s Trilobite Collection
This is definitely one of my favorite finds from the fall of 2022. This bug was expertly prepared to reveal even the finest of textures on the shell. Unfortunately the cephalon is slightly removed from the rest of the molt, but I honestly think it looks kinda nice. The majority of these bugs are found as either prone or slightly enrolled. Ventral examples are hard to come by. Middle Ordovician Lower Trenton Group Mohawk River Valley, NY Collected 11/05/2022-
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- gravicalymene
- trenton group
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What ancient creature is this? it has small bumps, no holes so i don't think it's a bryozoan? I will appreciate if anyone can identify this little fossil for me. Thanks!
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From the album: Nautiloid’s Trilobite Collection
This is the largest Gravicalymene I’ve collected so far at over 1.25” wide. It required quite a lot of gluing but it should turn out pretty nice when all is said and done! Collected 11/04/2022© Owen Yonkin 2022
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- gravicalymene
- ordovician
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There have been some great reports in the last week of folks hunting the Silurian and I wanted to add a report for my own serendipitous mini-trip from the last weekend. A few months ago, I had noticed a large pile of buff-colored stone dumped next to a retention pond in front of a local retail district. I thought they looked very similar to the Silurian dolomite I have seen and collected from elsewhere in Illinois, so I have been meaning to take a closer look. Last weekend I finally had some errands to run at Target with some free time on my hands, so I wandered over to the pile to check it out. In less than a minute I spotted a friendly face poking out of the corner of one piece of stone- Gravicalymene celebra! An iconic trilobite, and the biggest one I have found, with a cephalon just over 1 inch wide. It looks like it may be complete, although prep can be very difficult as @aek mentioned recently- at a minimum the cephalon appears to all be there. I looked around a little more and found a very poorly preserved cephalopod impression as well as one other rock with some intriguing shapes in it- it will need more prep though to say if it is anything. Since these were dumped next to a parking lot and there are no Silurian dolomite quarries within 60 miles, I can't say for sure what the source is. It seems likely to be the Racine or Joliet Dolomite of northeastern Illinois, though. I will definitely be returning when I have some free time and looking around some more- who knows, they may have used the same stone in other spots around the development!
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- dolomite
- gravicalymene
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