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  1. Fullux


    Howdy all, This is a piece of petrified wood My Dad found I believe in Knob Noster. I've been observing Calamites fossils and I think this might be a piece of calamites stem, though I need another opinion.
  2. Dear all, It was difficult, very difficult to wait with posting, since I am very, very excited about this fossil find. However, I also wanted the Dutch magazine version to come out first. Well, it finally did this Tuesday, so here is some info in English, along with a couple of the figures. During a visit to the Piesberg near Osnabrück (Germany) in 2010, I found a stem fragment of Calamites decorated with strange, elongate-oval structures [Fig. 1]. While those features were unusual and quite remarkable, it proved difficult to find information about them and the fossil consequently went into my collection as unidentified. Last January, however, I stumbled upon a research paper that could shed light on the matter. The elongate-oval structures turn out to be one of the oldest-known examples of endophytic oviposition, i.e. egg-laying inside plant tissue, by insects. Fig. 1. The fossil specimen is atypical in several respects [Fig. 2]. The stem fragment doesn’t show the longitudinal ribs one usually sees on the internodes of Calamites. This is because we are looking at a preservation of the epidermis (outer layer of the stem), not at a cast of the central pith, which are more commonly found. Fossils of the epidermis (sometimes referred to as Calamophyllites) typically have internodes with a smooth surface (though it may be lightly striated or wrinkled), leaving few diagnostic features. Nonetheless, due to the presence of a characteristic nodal line with large, circular branch-scars [Fig. 2, shown on schematic in green], the fossil fragment can be identified as Calamites (subgenus Calamitina) with reasonable confidence. Below the nodal line with branch-scars, about eight elongate-oval structures can be observed [Fig. 1]. They are all orientated roughly parallel to the axis of the calamite stem and vary in length from 6 to 16 mm. A foreign nature with respect to the plant tissue is suggested by the gümbelite film in which the epidermis is preserved (gümbelite is a hydromuscovite and responsible for the well-known silver-grey colour of the fossils from the Piesberg). Note how this thin film of mineralization does not extend across several of the elongate-oval structures, which may indicate that the plant tissue there is either missing or damaged. Their exact origin, however, remained a mystery to me. Until recently. Fig. 2. While looking for information on some Carboniferous localities in France, I happened upon the research article ‘Earliest Evidence of Insect Endophytic Oviposition’ by Olivier Béthoux et al. (2004). The paper describes insect egg-laying structures, called oviposition-scars, found on two stem fragments of Calamites cistii from the Upper Carboniferous (Stephanian B/C) of Graissessac, Southern France. These scars are elongate-oval structures, orientated parallel to the axis of the stem, occurring on a preservation of calamite epidermis [see their Figures 1 and 2]. Careful preparation of three of these scars yielded small spherical cavities, which the researchers interpreted as imprints of the eggs themselves [see their Figure 2b]. The oviposition-scars from Graissessac vary in length from 5 to 38 mm and are surrounded by a thin film of organic material [see their Figure 2c]. Given the strong resemblance with the Piesberg-material, it didn’t take long to make the link with the mystery markings I found years earlier. Now, after confirmation by email from Olivier Béthoux and in person from Han van Konijnenburg-van Cittert, I can with reasonable certainty say that some sort of Carboniferous insect has laid its eggs in the calamite stem I found in the Piesberg quarry. This type of trace fossils is quite rare, so I am very happy I brought this one home. As a nice bonus this specimen comes from the Westphalian D, and is thus somewhat older (about 4 million years) than the published material from Graissessac (Stephanian BC), which is still cited as the oldest occurrence in recent literature. So you can really say this specimen from the Piesberg is one of the oldest examples around! Hope this was as fun and informative as this fossil has been for me, Tim
  3. From the album: Steinbruch Piesberg (Osnabrück, Germany)

    Note specimen also contains Megaovoidus compactus-type oviposition scars.

    © T.K.T. Wolterbeek

  4. From the album: Steinbruch Piesberg (Osnabrück, Germany)

    Note specimen also contains Megaovoidus foveolatus-type oviposition scars.

    © T.K.T. Wolterbeek

  5. From the album: Steinbruch Piesberg (Osnabrück, Germany)

    Note specimen also contains Megaovoidus foveolatus-type oviposition scars in top left corner of image.

    © T.K.T. Wolterbeek

  6. From the album: Steinbruch Piesberg (Osnabrück, Germany)

    Note specimen also contains Megaovoidus compactus-type oviposition scars.

    © T.K.T. Wolterbeek

  7. bockryan


    From the album: Fossil Collection: DC Area and Beyond

    Calamites Ambridge, PA Glenshaw Formation Carboniferous (Late Pennsylvanian)
  8. zeemac

    Calamite trunk

    Found these two segments of a horsetail trunk in my backyard. I am located on the Sequatchie Anticline in an area of sandstone and bangor limestone abutting the Warrior coal basin in north-central Alabama. These were found on the top of a ridge in an area where the topsoil had washed away and the ground was disturbed. I assume the break is very recent as it fits almost perfectly together. Measurements are approximately 11 inches in length with a diameter of 3.5 inches.
  9. This is my obligatory once-yearly post to confirm that I'm still alive and well, and still out there collecting. So, at a site somewhere east of the Mississippi River: First photo shows part of a large Calamites impression surrounded by plant debris in a massive matrix block that was too large to collect (sorry no scale item in photo). The whole Calamites impression was about 4 feet long. Following photos show a partial Lepidodendron root, aka stigmaria, with rootlets branching off: a photo of left and right mirror pieces, then left side piece, right side piece, and underside showing that rootlets appeared on the underside of the matrix blocks as well as top. There were other finds such as Sigillaria and Neuropteris, but no photos of these.
  10. Found a few impressions similar to this one during a hike near Davis, WV. Geology is Pennsylvanian sandstone. Could this be Calamites or am I way off? Rock in photo is ~ 5"x4" in size Thanks!
  11. icycatelf

    Reed pith or 3D leaf?

    I actually found this several years ago, around the time I started collecting, and always assumed it was a type of Calamites. However, I recently noticed that Cordaites leaves (such as this example) have a very similar appearance. I wouldn't have expected it to have been preserved so... cylindrically though? Roughly 1.5" wide. Thoughts?
  12. Neill

    Is this a Calamite?

    I collected a number of these as a kid some 50 years ago. Only one is like this. I just thought I should try and identify it. I had always assumed it was a small tree trunk. Seems to match pictures of a calamite trunks (a new thing to me) with the distinctive ties at regular intervals. It comes from the old mining town of Brownhills UK. Coal, sand and clay were mined there. This came from the edges of an open pit clay mine. I went back to the site a few years ago but it's reclaimed now. You could still dig small holes and find fragments. So my kids found some. You just needed a bucket of water to wash the rocks off to see if they had anything because of the clay. This piece has a diameter of 4".
  13. Svetlana

    Carboniferous flora for ID

    Hello to all. I ask for your help in ID of the next sample. I have a large collection of Carboniferous flora, but this sample surprised me. First, I will publish standard finds from one mine in the Donetsk region of Ukraine. These Calamites were brought to the surface from a depth of 930 meters. Not flattened and of small diameter - an interesting find. 1476001232_1(5.1).mp4 1697913187_1(8).mp4
  14. Greetings to everyone! After a long absence, I came back with some interesting fossil material. Location: Western Bulgaria ~30Kms away from Sofia Age: Carboniferous - Westphalian Formation: Svoge I have visited the place one more time with no success, seeking within the banks of a small creek. Maybe my eye was not trained at identifying fossils within black shale and coal, or I was just not looking at the right spot. Last weekend, the weather was really sunny and pleasant, after 2 weeks of rain so I took Sara and hit the road! I stopped at a spot I could tell there was black shale and this time I climbed a quite steep slope, instead of going again into the creek. I was lucky and within minutes, I found my first Paleozoic plant material. That felt good! Having visited the local museum very recently, I was able to identify some Calamites sp. This was my first find, a decent chunk of Calamites. This one, I believe it is Lepidodendron sp. but not obovatum as per the species exhibited in the museum. Or maybe it is quite eroded. What do you think? The last fossil I collected was a multilayer with Calamites sp. , max dimensions 30X20cm. It was heavy, I have found enough so I called it a day. You can see the rest of the pictures at the bottom, more or less the same. I found a publication here http://www.bgd.bg/REVIEW_BGS/REVIEW_BGD_2006/pdf_files_2006/06.pdf which does not mention Lepidodendron at all. The fossils were cleaned with water, toothbrush and some soap to remove all the dust caused by the coal. I may visit again the formation, since I read some other reports that seeds of Carboniferous can be found there, plus some Devonian(?) Graptolites close to this place, so there is still some interest. Hope you like the findings!
  15. Went to a site in central PA today and collected some Llewelyn formation ferns and other Carboniferous plants. Second opinions on the following are appreciated! 1, I thought this is an Alethopteris but the leaves look like they can also be some immature Neuropteris with compound leaves with the leaves pressed together. 2. Is this Sigillaria bark? 3. Wasn’t sure if this is Lepidodendron bark. These crosshatched stem-looking prints are quite common at the site 4. is this a Calamite print? 5. I am fairly certain this is Neuropteris but just would like to be sure. That’s all. All and any help is appreciated! Thanks in advance and let me know if scale is needed.
  16. Hello to all. This is my collection of flora from the Carboniferous period. This topic will be filled gradually - there is a lot of material. All material originates from the Araukarite Formation of the Gzhel Stage of the Upper Pennsylvania Carboniferous period (303.4 Ma). Unless otherwise specified, it means that the default sample is from this formation. The type of substitution is silicification (sometimes with ferruginization), sometimes with quartz crystals on the surface of the samples. Enjoy watching Part 1. Sample 1. Part of a branch of small diameter with a whorled arrangement of knots. VID_20211212_143605.mp4
  17. Hoping for confirmation and/or species identification. Thanks in advance. Not sure of much anymore with all the recent changes. Annularia inflata? Alethopteris serlii? Calamites cistii? Pecopteris? Crenulopteris? species? Pecopteris? Crenulopteris? species?
  18. I am looking for some help. I have had this piece in a drawer in my collection for years, if not decades, and it never had an ID. It has a Calamites feel to it, but am not sure. There are also 2 small insects on this piece. I am looking for any ids and a possible location and age. it also has a Green River feel, but I am not sure if that can be the case. I really need to get some tag identifiers on some of my fossils that are lacking them. Thanks for any help.
  19. From the album: Lando’s Fossil Collection

    Triassic horsetail, possibly Neocalamites spp., from the Cumnock formation shale of Sanford, NC. Collected from a publicly accessible, legally navigable creek.

    © Lando_Cal_4tw

  20. From the album: Lando’s Fossil Collection

    Triassic horsetail stem compression fossil, possibly Neocalamites spp., collected from the Cumnock formation shale of Sanford, NC.

    © Lando_Cal_4tw

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