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Showing results for tags 'pionodema'.
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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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From the album: Brachiopods of Platteville/Decorah Twin Cities Minnesota
Pionodema conradi. I knew I had some tiny orthid brachiopod from Middle Platteville Formation but after checking book and this website: https://2dgf.dk/xpdf/bull26-01-02-115-132.pdf Kind of weird. I think Hesperorthis concava was invalid - too similar and two very close look alike can't compete with each other. One other brachiopod mention on the list Campylorthis deflecta look too much like Strophomena species despite a website saying genus name is valid.-
- brachiopod
- minnesota
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From the album: Brachiopods of Platteville/Decorah Twin Cities Minnesota
Pionodema subaequata Rectangular shaped compare to Doleriodes pervetus and tend to have more of broader posterior. Seem to be fragile and loves to flakes off into thin layers.-
- brachiopod
- decorah formation
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