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  1. 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
  2. paleoflor

    unidentified frond

    From the album: Steinbruch Piesberg (Osnabrück, Germany)

    © T.K.T. Wolterbeek

  3. L.S., Some TFF members may recall that I've posted about this specimen back in 2018 (this post, to be exact). This weekend, I'm going through drawers with fossils to try to identify some old finds. After looking at this particular specimen again, I think the tentative ID "cf. Zoophycos (?)" from six years ago is probably not correct. Therefore, I'd like to resubmit this one for evaluation by the esteemed TFF membership once more. The overview photo below (please click to enlarge) shows three spiral structures on the right hand side and a larger "C-shaped structure" more to the centre of the image. Combined, the three spirals are 16 mm long (distance measured as seen vertically on the overview photo). The second photo shows a microscope image that I made today. At least the lowermost spiral seems to be surrounded by a "hairy" rachis-like structure, with narrower hairy stems going in between the segmented structures of the spiral (possible pinnules?). Back in 2018, I did not have microscope images to share on TFF and the suggested ID as "cf. Zoophycos (?)" made sense to me (at least the specimen ended up like that in my current database). But looking at the fossil again, I think this really is something vegetative. Fossil fiddleheads (Spiropteris sp.) are well-known from the Carboniferous, but these would be the smallest ones I've seen. The nature of the C-shaped structure wasn't really resolved back in 2018, but could this be related to the supposed fiddleheads somehow? Could the C-shaped structure represent remnants of a seed for example? The area "connecting" the C-shaped structure and spirals shows a lot of interesting texture with additional/overlapping, even smaller spirals (?) but is rather rough and difficult to photograph (see third photo though). The "innards" of the C-shape are relatively flat, but this may caused by the straplike leaves/stems that seem to be preserved in a plane just above the other structures. You can see this layer-on-top quite clearly on the third photo, at the end of the rachis of the leftmost spiral and directly to its right. Yet I do not dare try remove this layer and risk damage to the fossil... Given the really tiny size of the spiralled leaflets, I was wondering if someone here knows of any literature on "seedlings" of Carboniferous plants? What would that very early ontogenetic stage look like? Some examples for comparison would be great! Thanks for your interest, Tim
  4. L.S., Hope someone can help me with the identification of these small fossils from the Pennsylvanian (Westphalian D) of the Piesberg quarry near Osnabrück, Germany. Each of these little "hairbrushes" is about 1 cm long. I suspect they might be something vegetative, perhaps some reproductive structure? All ID suggestions welcome! Thanks, Tim
  5. paleoflor

    unidentified seed

    From the album: Steinbruch Piesberg (Osnabrück, Germany)

    © T.K.T. Wolterbeek

  6. paleoflor

    unidentified seed

    From the album: Steinbruch Piesberg (Osnabrück, Germany)

    © T.K.T. Wolterbeek

  7. paleoflor

    Sphenophyllum sp.

    From the album: Steinbruch Piesberg (Osnabrück, Germany)

    © T.K.T. Wolterbeek

  8. paleoflor

    Trigonocarpus sp.

    From the album: Steinbruch Piesberg (Osnabrück, Germany)

    © T.K.T. Wolterbeek

  9. paleoflor

    unidentified seed

    From the album: Steinbruch Piesberg (Osnabrück, Germany)

    © T.K.T. Wolterbeek

  10. paleoflor

    unidentified seed

    From the album: Steinbruch Piesberg (Osnabrück, Germany)

    © T.K.T. Wolterbeek

  11. Noah Jackson

    Carboniferous Plant Fossils

    Recently visited Whitehaven in Cumbria, UK, and split some ironstone/shale rocks on the foreshore towards Parton Bay. I could mostly identify the many Calamites however I did spot some pinnate leaves which I am unsure about. The fossils are of the Carboniferous Period, Bolsovian Substage (315.2-309.5mya) a few million years prior to the CRC. The specimens here look somewhat like modern pine leaves though it is my understanding that conifers were not fully established at this point. Could they be the leaves of Calamites themselves, as all of the specimens are found in rocks also containing roots of the Calamites? They don't seem to look like any other of the fern-like leaves common in Whitehaven, and even Calamites leaves are apparently digitate. Sorry if the answer is obvious, I am for the most part a beginner - particularly with carboniferous fossils. Thanks!
  12. Hi, I have noticed that in the past in the UK various fossils have been found at mines like Crock Hey in siderite nodules, I know of some open cast mines in my area with carboniferous strata of County Durham, is there a chance these could contain such siderite nodules? I have done some research and these type of nodules appear at Howick bay but im not sure if they appear further south at places like whitley bay/seaton sluice
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