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This a Permian Gastropod I found in County Durham, at Ford Quarry. I have been using this guide http://www.limestonelandscapes.info/media/11163/Zechstein-Reef-Fossils-and-their-palaeoecology-WEB/pdf/ZechsteinReefFossilsWEB.pdf to try to determine its genus, if its possible. There are a few other disarticulated remains if this helps. Does anyone here know enough about Molluscs to help? This is counted as Locality 2 in the guide, there are three possible genus, Yunnania, Naticopsis and Mourlonia. The gastropod is about 4cm in diameter at its widest point.
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- gastropod
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I found these on the local riverbank while my daughter was busy picking up a load more Carboniferous rugose corals. In the North East of England. Are they anything of interest?
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From the Great Limestone, Pendleian (Upper Mississippian) of County Durham, UK. One for @Spongy Joe and any other sponge experts out there. There appear to be no sponges (apart from Chaetetes) recorded from this well researched limestone but I've collected over thirty over the past few years. There are several different types, generally fossilised as broken fragments though these can be quite large (several inches across). This one is a curved sheet, like part of a vase or dish, about 10 - 15mm thick. The outer (convex) layer contains a good proportion of spicules showing five (and a few six) rays so could it be a heteractinid of some sort? The preservation is mostly calcite, perhaps original. Scale bar is 1cm long. Vertical section, showing disposition of tangential sections below. (specimen no. Sp. 13) Tangential section, cutting through outer surface on right and bottom (the orange layer, with smaller spicules than the internal ones). Closeups of tangential sections. Several five rayed spicules are visible along the edges (i.e. in the outer layer).
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- county durham
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Characteristic of the Upper Visean and Lower Namurian of Europe and Africa. Easily identified by its compact, cuspidate axial column made of small tabellae. One of the less common solitary corals in the Great Limestone, this one is in a dark matrix locally known as "Frosterley Marble".
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- alston formation
- aulophyllum
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