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Showing results for tags 'hyolithid'.
Hardly anybody ever talks about the Cambrian fossils of the southern midcontinent (USA). They're super-underappreciated. Show us what you've got! Here's one to start us off: Thorax and pygidium of a trilobite, possibly Orygmaspis, typically referred to as "Orygmaspis cf. Orygmaspis llanoensis" but probably a different species altogether. Note the two pairs of macropleural spines marking the final thoracic segments. Davis Formation (late Cambrian: Furongian), south side of Highway 8, St. François County, Missouri.
Washington state is well known for its beautifully preserved fossil crabs and leaf impressions but recently I have been fascinated by some of the less recognised Palaeozoic material from the northeast of the state. Last week I had the opportunity to visit a large roadcut outside of Addy, Wa. I first learned of this location a few years back researching the Palaeozoic of Washington and spending about an hour at the site what I found far exceeded my expectations. The roadcut, published by Okulitch (1951) cuts through the Addy Quartzite Formation which is of Lower Cambrian age and is one of only