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Found 16 results

  1. Bringing Fossils to Life

    Trilobite dilema

    After many fossil hunts at Seven Stars, I finally found a large, prone, almost complete Dipleura dekayi! However, the way the shale split when I chiseled it open, all of the body fossil except the pygidium and a few adjacent segments are on one rock, visible ventrally , but with a thin covering of rock, and the imprint of this covering on the other rock. My original idea was to glue it all back together with field consolidant, then use my dremel tips to prep all the way through the one rock to reveal the trilobite dorsally. However, I am a beginner preparator, and have no assurance (I understand that one can never have assurance that preparation will go well) that everything will work out well, and also the cool textured doublure and the associated hypostome fragment would never be able to be seen again, covered by the rest of the cephalon. Another solution is simply to prep it ventrally, which was not what i was originally what I was going for. Is it possible to prep the cephalon off so that it is removable, so that the underside of it can be visible? Are there any suggestions from seasoned preparators about how I should go about preparing this Dipleura dekayi, which is undoubtedly one of the best specimens in my collection? Thanks for any help in advance; if no clear-cut ideas are given, I may not do anything to it just yet. The main rock, with the impression and the posterior segments: The smaller rock that come off, with the ventrally preserved anterior body with some rock covering it. A 20x magnified view of the doublure and hypostome, showing the striated texture similar to that of unrelated trilobites such as Isotelus, which have been suggested to have been for grading prey on.
  2. Thomas1982

    Dipleura dekayi

    From the album: Mahantango Formation

    Dipleura dekayi Schuylkill County, Pennsylvania
  3. Fossildude19

    Partial Trilobite

    From the album: Fossildude's Middle Devonian Fossils

    Dipleura dekayi partial thorax/pygidium. This would have been a monster - 7 or 8 inches long, at least. Windom Shale Member of the Moscow Formation, Hamilton Group, Middle Devonian (Givetian) Deep Springs Road Quarry, Lebanon, NY.

    © 2023 Tim Jones

  4. Rock-Guy-17

    Dipleura dekayi

    From the album: Devonian - New York

    Dipleura dekayi Moscow Formation Middle Devonian Deep Springs Road, Earlville, NY Self Collected - 2022
  5. Andúril Flame of the West

    Dipleura vs Trimerus

    Hello all, In my investigation of the fauna of the Devonian Mahantango Formation, I have become quite interested in the trilobite Dipleura dekayi. I have not yet had the opportunity to encounter this bug on the field, but it’s size and strange appearance have draw my interest. From the sources that I have read regarding the Mahantango and Hamilton Group formations in Pennsylvania and New York, I have noticed that trilobites with a very similar appearance have been referred to the separate genera Dipleura and Trimerus. In Fossil Collecting in the Mid-Atlantic States, Jasper Burns seems to treat Dipleura and Trimerus as synonyms. However, Wikipedia (I am fully aware this is not the most reliable source) has separate pages for Dipleura dekayi and Trimerus dekayi. I have also heard more references to Trimerus when the specimens are found in the New York area and I vaguely remember a posting on the forum where the question of Dipleura vs. Trimerus was addressed but which post that was has escaped me. Here are the main questions that I have regarding this topic: 1.) Are Trimerus dekayi and Dipleura dekayi different valid trilobite species or are they synonyms? If they are synonyms, which would be the most proper to use? 2.) If Trimerus dekayi and Dipleura dekayi are two different valid species, how can they be differentiated? Does this depend on the region where the specimen was recovered? 3.) Are there other species of Trimerus present in the Mahantango Formation/Hamilton Group and how can they be identified and differentiated from Dipleura? Thank you in advance to all who view and comment on this post. I am very eager to learn more about Mahantango fauna and hopefully it will not be long before I find my first Dipleura/Trimerus in the field.
  6. Fossildude19

    Dipleura dekayi juvenile

    From the album: Fossildude's Middle Devonian Fossils

    Dipleura dekayi complete prone trilobite juvenile Windom Shale Member of the Moscow Formation, Hamilton Group, Middle Devonian (Givetian) Deep Springs Road Quarry, Lebanon, NY.

    © 2022 Tim Jones

  7. A.C.

    Dipleura dekayi

    Curled Dipleura dekayi sitting on a slab with an enrolled Eldredgeops rana. Apparently, the Eldredgeops was added to this Dipleura to create this "association" piece.
  8. A.C.

    knockout 5.JPG

    From the album: A.C.'s Trades/Purchases

    Dipleura dekayi (Left) and Eldredgeops rana (Right) Middle Devonian Hamilton Group Skaneateles Formation Madison, NY
  9. A.C.

    knockout 3.jpg

    From the album: A.C.'s Trades/Purchases

    Dipleura dekayi (Pygidium) Middle Devonian Hamilton Group Skaneateles Formation Madison, NY
  10. A.C.

    knockout 2.jpg

    From the album: A.C.'s Trades/Purchases

    Dipleura dekayi Middle Devonian Hamilton Group Skaneateles Formation Madison, NY
  11. A.C.

    knockout.JPG

    From the album: A.C.'s Trades/Purchases

    Dipleura dekayi Middle Devonian Hamilton Group Skaneateles Formation Madison, NY
  12. Fossildude19

    Dipleura thorax and pygidium molt

    From the album: Fossildude's Middle Devonian Fossils

    Dipleura dekayi thorax and pygidium. Windom Shale Member of the Moscow Formation, Hamilton Group, Middle Devonian (Givetian) Deep Springs Road Quarry, Lebanon, NY.

    © © 2022 Tim Jones

  13. Fossildude19

    Dipleura dekayi juvenile

    From the album: Fossildude's Middle Devonian Fossils

    Dipleura dekayi juvenile. Partially rolled and crushed. Windom Shale Member of the Moscow Formation, Hamilton Group, Middle Devonian (Givetian) Deep Springs Road Quarry, Earlsville, NY. Collected on June 12, 2021.

    © 2021 Tim Jones

  14. Fossildude19

    Dipleura dekayi partial

    From the album: Fossildude's Middle Devonian Fossils

    Dipleura dekayi partial. Deep Springs Road, Earlville, NY. Collected June 12, 2021 Windom Shale Member of the Moscow Formation, Hamilton Group, Middle Devonian (Givetian)

    © 2021 Tim Jones ©

  15. Fossildude19

    Dipleura dekayi

    From the album: Fossildude's Middle Devonian Fossils

    Dipleura dekayi, cephalon, and thorax/pygidium from separate individuals. Middle Devonian, Moscow Formation, Hamilton Group. Deep Springs Road, Lebanon, NY

    © © 2014 Tim Jones

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