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Found 10 results

  1. 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
  2. paleoflor

    Araucaria mirabilis

    Old collection specimen. See this Wikipedia page for more information on Araucaria mirabilis from the Jurassic of the Cerro Cuadrado Petrified Forest, Argentina.
  3. Barrelcactusaddict

    Myanmar Amber ([Unnamed Fm.], 99.34-98.10 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Coleoptera with exuded gas bubbles; these are likely methane, and could be the by-product of methanogenic bacteria inside a xylophagous (wood-eating) species. Some adult members of the Cetoniinae subfamily (family: Scarabaeidae) are xylophagous and known to produce methane; while this is known from Recent species, it's possible such characteristics could be found in extinct members of the Scarabaeidae or Scarabaeoidea (superfamily). This inclusion is contained in the same specimen depicting pholadid crypts. Provenance of specimen is Tanai Township, Myitkyina District, Myanmar. This image was captured using a HAYEAR HY-1070 microscope.

    © Kaegen Lau

  4. Barrelcactusaddict

    Myanmar Amber ([Unnamed Fm.], 99.34-98.10 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Polished specimen containing sediment/calcite-filled domichnia (burrows/crypts) formed by mollusks of the family Pholadidae (likely subfam. Martesiinae): these features were formed while the resin was in a marine environment and after it had sufficiently hardened, all preceding its burial and subsequent diagenesis. Provenance of specimen is Tanai Township, Myitkyina District, Myanmar. This image was captured using a HAYEAR HY-1070 microscope.

    © Kaegen Lau

  5. Barrelcactusaddict

    Myanmar Amber ([Unnamed Fm.], 99.34-98.10 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Bundle of root trichomes (possibly fern), isopod exuvia, and mite, all contained in the same specimen depicting pholadid crypts. Provenance of specimen is Tanai Township, Myitkyina District, Myanmar. This image was captured using a HAYEAR HY-1070 microscope.

    © Kaegen Lau

  6. Barrelcactusaddict

    Myanmar Amber ([Unnamed Fm.], 99.34-98.10 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Liverwort belonging to the family Lejeuneaceae, contained within the same specimen depicting pholadid domichnia; adjacent to it, is a small root trichome, possibly that of a fern (such trichomes are commonly observed in Myanmar amber, comparable to the presence of stellate "oak" trichomes in Baltic amber). Provenance of specimen is Tanai Township, Myitkyina District, Myanmar. This image was captured using a HAYEAR HY-1070 microscope.

    © Kaegen Lau

  7. I recently acquired a small Araucaria cone and I am wondering what the general opinion on cutting/polishing fossil pine cones. Should it be cut to show off the internal structure or is it best to just leave it as a whole specimen? How do you feel about modifying fossils in general to enhance aesthetic, rather than scientific, value? I am interested to hear the Fossil Forum's opinions.
  8. Good evening to all participants! I have accumulated a lot of local (from Ukraine) material - I decided to sort it out, and recurring fossils, or not of interest to me, offers you an exchange. Everything in the photos is one lot. Consists of: 1. Tile from Carboniferous period with fern print; 2. A fragment of the armor of a armored fish Podolaspis Lerichei of the Devonian period; 3. Tile with Silrian brachiopods and tentaculites; 4. Mollusk of Neogene; 5. A small fragment of a fossilized araucaria of the Carboniferous period with quartzite crystals; 6. 2 fragments of orthoceras (found together with a tile with tentaculites); 7. A selection of teeth and vertebrae (most of the Cenomanian fish): 7.1. 3 Enchodus teeth (2 large ones are glued from fragments, and the largest (light) one is also smeared with a children's felt-tip pen), Cenomanian. 7.2. Ptychodus teeth (light - Cenomanian; found personally, and dark ones got by exchange); 7.3. 2 undefined teeth of the Cenomanian fish and good teeth of a shark from Malin, Zhytomyr region (by the way, dark teeth of Ptychodus are from the same place); 7.4. 2 Pycnodus teeth - Cenomanian. 7.5. - A bag of Cenomanian fish vertebrae - about 50-60 pieces. Perhaps some of this will interest you. What is interesting to me: first of all, on marine reptiles and dinosaurs, and also offhand, I am interested in the teeth of megalodon, Crinoids and ammonites. Surely I missed something - I ask you, do not hesitate to write to me in private messages - i will glad to talk. Best regards, Svetlana
  9. Luis E

    Araucaria pine cone

    Here is a Araucaria Mirabilis pine cone about 7.5 cm long.
  10. New Argentine fossils uncover history of celebrated conifer group Francisco Tutella, Penn State University, June 18, 2020 https://news.psu.edu/story/623337/2020/06/18/research/new-argentine-fossils-uncover-history-celebrated-conifer-group Rossetto‐Harris, G., Wilf, P., Escapa, I.H. and Andruchow‐Colombo, A., 2020. Eocene Araucaria Sect. Eutacta from Patagonia and floristic turnover during the initial isolation of South America. American Journal of Botany. https://www.researchgate.net/publication/341278103_Eocene_Araucaria_Sect_Eutacta_from_Patagonia_and_floristic_turnover_during_the_initial_isolation_of_South_America https://www.researchgate.net/profile/Peter_Wilf Shi, G., Li, H., Leslie, A.B. and Zhou, Z., 2020. Araucaria bract-scale complex and associated foliage from the early-middle Eocene of Antarctica and their implications for Gondwanan biogeography. Historical Biology, 32(2), pp.164-173. https://www.researchgate.net/publication/325404218_Araucaria_bract-scale_complex_and_associated_foliage_from_the_early-middle_Eocene_of_Antarctica_and_their_implications_for_Gondwanan_biogeography https://www.researchgate.net/profile/Gongle_Shi Yours, Paul H.
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