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Showing results for tags 'hesperorthis tricenaria'.
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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: Brachiopods of Platteville/Decorah Twin Cities Minnesota
Hesperorthis tricenaria - from Decorah formation. Seem like it have more diversity of shapes in Decorah than platteville, mostly in height.-
- brachiopod
- decorah formation
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From the album: Brachiopods of Platteville/Decorah Twin Cities Minnesota
Hesperorthis tricenaria. This is upper Platteville formation which is very abundant and the most easily identified brachiopod from that layer - diversity of fossils in upper platteville while abundant, tend to be very low in diversity. Among brachiopods of upper platteville, mainly Strophomena filitexta, Hesperorthis tricenaria, Oepikina minnesotensis, Rafinesquina sp, and maybe Oepikina inquassa is practically the only brachiopod species found in upper Platteville.-
- brachiopod
- hesperorthis
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