Peat Burns Posted September 28, 2018 Share Posted September 28, 2018 I have two items on which I am requesting opinions. These are from a dolomitic nodule from the Schoolcraft Fm. in the upper peninsula of Michigan. The first one I think is a pygidium of the trilobite Scutellum. (note there appear to be some other trilo"bits" surrounding it). @piranha, what do you think? Here is an image from Ehlers (1973) Stratigraphy of the Niagaran Series of the Northern Peninsula of Michigan that he has as Scutellum laphami. 1 Link to comment Share on other sites More sharing options...
Peat Burns Posted September 28, 2018 Author Share Posted September 28, 2018 The second item is a carbonized compression (i.e. two-dimensional with only an organic "stain") which is why I don't think it's a fenestrate bryozoan. I was thinking graptolite. Inocaulus plumosus? Maybe another alga? Thoughts? (scale in mm) 1 Link to comment Share on other sites More sharing options...
ynot Posted September 28, 2018 Share Posted September 28, 2018 12 minutes ago, Peat Burns said: Thoughts? A mouse's snowshoe(?) How about a fairy's lacrosse racket(?) Nice piece, but I got no clue on this one. Tony Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Peat Burns Posted September 28, 2018 Author Share Posted September 28, 2018 13 minutes ago, ynot said: A mouse's snowshoe(?) How about a fairy's lacrosse racket(?) Nice piece, but I got no clue on this one. Tony Link to comment Share on other sites More sharing options...
piranha Posted September 28, 2018 Share Posted September 28, 2018 Congrats! 1 Link to comment Share on other sites More sharing options...
Peat Burns Posted September 28, 2018 Author Share Posted September 28, 2018 4 minutes ago, piranha said: Congrats! I'll take that as an affirmative on the Scutellum. Thank you, sir . Is there enough there to call it S. laphami? (or perhaps that's all it can be based on possible taxa?) Link to comment Share on other sites More sharing options...
piranha Posted September 28, 2018 Share Posted September 28, 2018 On 9/27/2018 at 7:42 PM, Peat Burns said: ...Is there enough there to call it S. laphami? (or perhaps that's all it can be based on possible taxa?) Yes, there is only one scutelluid. Since Bronteus laphami (Whitfield 1882), it has had some name changes: Goldius, Scutellum The current taxonomy has been revised to: Ekwanoscutellum laphami Hughes, H.E., Thomas, A.T. 2014 Trilobites from Silurian Reefs in North Greenland. Special Papers in Palaeontology, 92:1-102 Whitfield, R.P. 1882 Geology of Wisconsin, Part III: Palaeontology. Wisconsin Geological Survey, 4:161-363 LINK 6 Link to comment Share on other sites More sharing options...
Packy Posted May 5, 2020 Share Posted May 5, 2020 Sure looks like a nice graptolite. I guess we need a treatise to get closer . packy 1 Link to comment Share on other sites More sharing options...
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