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Showing results for tags 'bumastus'.
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Yesterday I was able to take a trip to the Silurian Racine formation of Southern Wisconsin. This site was easier than others due to the clear stratification, and I was able to see some of the reef overlay and underlay. finds included: my first dolomitized crinoid calyx, a nice fez-looking coral, some Bumastus trilobits, and what looks like a Cornulites impression? I’m curious if anyone has thoughts on the circular impression with calcite growths in it- unsure if it‘s an imprint or just a gap with mineral growth. Included a fun extra picture of old and new critters paired together.
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From the album: Nautiloid’s Trilobite Collection
Although the cephalon is slightly disarticulated, this is still a nice example of an iconic Rochester Shale trilobite. This bug was collected from Caleb Quarry in Middleport, NY, and was purchased from a good friend of mine.© Owen Yonkin 2022
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I found this pygidium the other day in the Silurian Racine formation near Chicago, wondering if any trilobite specialists can help with species ID? I'm thinking Illaenus ioxus (is that current nomenclature?)but not sure. Thanks for any help.