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Showing results for tags 'Carboniferous'.
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L.S., Pecopterid fossils from the Piesberg (Lower Saxony, DEU) are notoriously difficult to ID because the preservation does usually not show the venation (e.g., Josten 1991; PDFs of text and atlas volume). As a group, the pecopterids have also undergone quite substantial taxonomical revisions in the last few years based on material from other localities; not in the least from Mazon Creek (Illinois, USA). This makes identification of my Piesberg-pecopteris a rather daunting endeavour. Perhaps someone on TFF who has experience with the Mazon Creek pecopterids and most current nomenclatural changes would be willing to take a stab at them for me? Images can be enlarged by clicking on them. If photos of specific details are required, let me know and I'll do my best to provide them (but note that venation is often simply not preserved very well). Thanks in advance for any ID suggestions or tips you can provide. Kind regards, Tim Specimens TKTW0048 (left; "Spiropteris sp.") and TKTW0049 (right) Specimen TKTW0542 Specimen TKTW0651 - I'm not even sure this is a pecopterid... Specimen TKTW0826 (left) and TKTW0827 (right) Specimen TKTW1004 Specimen TKTW1078 (left), TKTW1079 (middle) and TKTW1082 (right) - all from same slab of rock (related?) Specimen TKTW1099 - "Spiropteris sp." but what kind of pecopterid is in the foreground? Specimen TKTW1099 - note fertile pinna on the right
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- asturian
- carboniferous
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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I was lucky enough to stop by mazon creek the other day. Had a great time and was lucky enough to find some very productive areas. I found one particularly large concretion(?) that was already opened. Identifying Mazon Creek fauna is an art and science, I do my best. Does anyone see anything here, know what it could be? I see some symmetry, and there seems to be a central structure with tentacles or something coming from the bottom. My guess is it is some kind of jellyfish? Maybe its nothing? Any help by those more versed in the Mazon Creek fauna would be greatly appreciated. Thanks.
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- Carboniferous
- illinois
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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Renaultia chaerophylloides (Brongniart) Zeiller 1883
paleoflor posted a gallery image in Member Collections
From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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Macroneuropteris scheuchzeri (Hoffmann) Cleal et al. 1990
paleoflor posted a gallery image in Member Collections
From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
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Micro heteromorphic silicified ?gastropod ?microconchid Mississippian, England
TqB posted a topic in Fossil ID
Does anyone recognise this tiny silicified shell? It's about 2mm long. I haven't seen one like it before from the Carboniferous. From the Great Limestone (upper Mississippian, Pendleian Stage) from Weardale, Co. Durham, England. From a piece I've been dissolving in acid, containing silicified brachiopods, gastropods etc. It starts off with an open helical spiral (3rd photo) and then straightens out. It also has clear annular ribs. Although the preservation is imperfect and sugary, I'm sure it's shell replacement rather than internal mould, judging from other fossils in the pece. The various serpulid-like gastropods and microconchids I've come across elsewhere don't have the regular ribbing.
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- aberrant
- carboniferous
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I am going to start adding some images of my favorite finds which I call Collection Pieces. Identifications range from maybe, probably to most likely. I've only started to seriously collect over the past year. I've spent a great deal of time studying and learning Geology, as a hobby. I am located in Western Pennsylvania. At first, a map of the area. Anything in bright yellow is the Glenshaw Formation. The Ames Limestone layer exists between the Glenshaw and the Casselman Formations, which is the Orange color on the map. I have yet to explore the Ames Limestone, so I've only found fossils that exist in the marine zones below the Ames. Second and Third, are Metacoceras. The Fourth photo is of another Metacoceras. The id is slightly less likely as I can only see a few of the rounded spines. But I'm pretty sure it is one. Coming up next is a Mooreoceras that I found just this past weekend. I maintain everything on a website, that is listed in my profile. Thank you! Clint
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- carboniferous
- glenshaw formation
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L.S., Found some plant fossils where the mineralisation takes on all colours of the rainbow. Earlier, Ken @digit suggested the blue colour may originate from chalcopyrite (a good candidate, as chalcopyrite is known to occur at the locality). All these additional colours seem to support Ken's hypothesis, since chalcopyrite develops an iridescent tarnish more often. Unfortunately the thin film-preservation makes confident mineral identification quite challenging. I'll report back once I've found the associated fossil-pot of gold. Kind regards, Tim Eusphenopteris sp. Cyclopteris sp. (same specimen photographed under slightly different lighting conditions) Laveineopteris rarinervis Laveineopteris cf. dussartii
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- carboniferous
- germany
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From the album: Steinbruch Piesberg (Osnabrück, Germany)
© T.K.T. Wolterbeek
