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  1. Paul1719

    Turrisaspis elektor

    Very common placoderm at Red Hill site, but rarely articulated. Diagnosis. A small groenlandaspidid with a short head shield and tall and narrow dorsal trunk elements. The head shield is almost as wide as long (average W/L equals 0.96). The pineal is divided into two distinct plates in every specimen and the postmarginal makes contact with the postorbital plate, excluding the marginal plate from the lateral margin of the head shield. A continuation of the supraorbital sensory line reaches the caudal margin of the paranuchal plate. The PDL has an average H/L ratio of 2.42. The posterodorsal projection of the PDL is short and angled sharply upward so that the overlap zone for the MD does not reach the caudal margin of the element. The height of the symphysial area on the visceral surface of the PDL is 40% of the total height of the element. The MD is also high and narrow and approximately equal in height to the PDL. The MD has numerous coarse serrations along the caudal margin and tubercles on the lateral surfaces that form rows parallel to the ventral margin. ADL, anterior dorsolateral plate; AL, anterior lateral plate; AMV, anterior median ventral plate; APi, anterior pineal plate; AVL, anterior ventrolateral plate; Ce, central plate; IL, interolateral plate; M, marginal plate; MD, median dorsal plate; Nu, nuchal plate; PDL, posterior dorsolateral plate; Pi, pineal plate; PL, posterior lateral plate; PM, postmarginal plate; PMV, posterior median ventral plate; PNu, paranuchal plate; PPi, posterior pineal plate; PrO, preorbital plate; Psp, parasphenoid; PtO, postorbital plate; PVL, posterior ventrolateral plate; R, rostral plate; Sgn, supragnathal; SP, spinal plate. EDWARD B. DAESCHLER,1* ANNA C. FRUMES2 AND C. FREDERICK MULLISON1 Records of the Australian Museum (2003) Vol. 55: 45–60. ISSN 0067-1975
  2. oilshale

    Archaeopteris sp.

    Taxonomy from Fossilworks.org. Synonym: Palaeopteris Schimper 1869. The fossil wood known as Callixylon and the leaves known as Archaeopteris are actually part of the same plant. Diagnosis for Archaeopteris from Anderson et al. 1995, p. 310: “The sterile branching systems bear leaves attached either directly to the penultimate branch or to the ultimate branch. The leaves which flare from a narrow base become flabellate and rounded distally, and vary from nearly entire to deeply dissected (Beck, 1981: 199). The present collection fits more into the dissected end of the range. The fertile -branching systems produced ultimate fertile branches bearing leaves on the adaxial surface of which were borne sporangia and on occasion, basal and/or apical leaves which functioned primarily as photosynthetic organs. The new fertile material also bears sporangia on the adaxial surface of the leaves of the ultimate fertile branches and furthermore a few leaves also occur directly on the branch.” Line drawing of Archaeopteris from Beck 1962, p. 374: References: Beck, CB (1960). "The identity of Archaeopteris and Callixylon". Brittonia. 12 (4): 351–368. doi:10.2307/2805124. Beck, CB (1962). "Reconstructions of Archaeopteris, and further consideration of its phylogenetic position". American Journal of Botany. 49 (4): 373–382. doi:10.1002/j.1537-2197.1962.tb14953.x. hdl:2027.42/141981. JSTOR 2439077. Beck, CB (1981). Archaeopteris and its role in vascular plant evolution. In: Niklas KJ, ed. Paleoebotany, Paleoecology, and Evolution, Vol. 1. New York: Praeger, 193-230. Anderson, H. M., Hiller, N. & Gess, R. W. (1995) Archaeopteris (Progymnospernopsida) from the Devonian of southern Africa. Botanical Journal of the Linnean Society 1995, I I7: 305 320. With 37 figures.
  3. Hi everyone! Last weekend I took a couple of days off work for my birthday and I decided to visit a fossil spot in the ardennes which was recently recommended to me because there was a chance to find fossils of primitive plants as well as devonian fish (which is one of my main interests within the hobby). The site is relatively close by as well which was a huge plus as it only took an hour to drive. The fossils in this location date back to the late Devonian, Famennian to be exact (372.2 million years ago to 358.9 million years ago) After searching for a 45 minutes we finally found the top spot with the right layer rich in plant material, here are some in situ pictures of the larger examples (which we didn't extract). If I am correct I believe these are the remains of Rhacophyton condrusorum which is a primitive species of fern if I remember reading once. We were also lucky to find some fossils of devonian fish, which was the main reason for our visit. A lovely small Lungfish (Dipnoi indet) tooth An imprint of a fish scale of bone While it was quite a cold day, it was sunny and we had a quiet afternoon at the spot where we could search in peace.
  4. paleoflor

    Aneurophyton sp. (???)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  5. paleoflor

    Aneurophyton sp. (???)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  6. paleoflor

    Rhacophyton sp. (foliage)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  7. paleoflor

    Rhacophyton sp. (foliage)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  8. paleoflor

    Rhacophyton sp. (foliage)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  9. paleoflor

    Rhacophyton sp. (fertile)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  10. paleoflor

    Rhacophyton sp. (fertile)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  11. paleoflor

    Rhacophyton sp. (fertile)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  12. paleoflor

    Rhacophyton sp. (fertile)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  13. paleoflor

    Rhacophyton sp. (fertile)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  14. paleoflor

    Rhacophyton sp. (fertile)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  15. paleoflor

    Rhacophyton sp. (fertile)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  16. paleoflor

    Rhacophyton sp. (fertile)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  17. paleoflor

    Rhacophyton sp. (fertile)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  18. paleoflor

    Rhacophyton sp. (fertile)

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  19. paleoflor

    unidentified fish scale

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  20. paleoflor

    unidentified fish scale

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  21. paleoflor

    unidentified fish scale

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  22. paleoflor

    unidentified fish scale

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  23. paleoflor

    unidentified plant remains

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

  24. paleoflor

    unidentified plant remains

    From the album: Carrière Suermondt (Moresnet, Belgium)

    © T.K.T. Wolterbeek

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