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  1. Bringing Fossils to Life

    What is this?

    Found At Seven Stars PA a while ago, I am not sure weather this is a spine from the pygidium of a Greenops boothi, or if it is part of a phyllocarid telson. I am not an expert on arthropods, for all I know it could be a hyolithid (Hallotheca aclis). Adjacent fossil is a tiny gastropod, scale bar 5 mm.
  2. I have found several of these in an outcropping of shale and limestone in the Iola Formation in Northeastern Oklahoma (middle Pennsylvanian). The longest dimension is about 15 mm (≈ 5/8 inch). Some of the other specimens are slightly larger, but all have the same pattern of bumps. (I photographed this one because it shows the least wear.) I’m wondering it might be the carapace of a phyllocarid or some other crustacean. Alternatively, it might be a bivalve or other mollusk. Any help with ID would be appreciated. Focus and exposure were difficult, so there are several images. Best wishes.
  3. Yesterday I was able to get out to Onondaga County in central NY. While I was there I got a chance to do some fossil hunting at two locations. The first was in Pompey Center, NY near Pratt’s Falls. The second location was a creek in Delphi Falls. The rock at both of these locations was the Skaneateles formation. I was able to get into a different formation at the second spot that was more shaly and had better preservation. This was my first time fossil hunting in the middle Devonian and I was amazed with the number of bivalves I found. (I’ve never found one in the lower Devonian near me). As well as bivalves I was able to find a few very well preserved gastropods, some brachiopods, a bunch of ostracods, and what I believe is a partial phyllocarid carapace.
  4. Nautiloid

    Rhinocaris columbina

    From the album: Nautiloid’s phyllocarid collection

    This specimen exhibits both valves. Collected from the Middle Devonian Hamilton Group of Central NY on August 8, 2022

    © Owen Yonkin 2022

  5. Fossildude19

    Another small phyllocarid valve

    From the album: Fossildude's Middle Devonian Fossils

    Rhinocaris columbina phyllocarid single valve. Windom Shale Member of the Moscow Formation, Hamilton Group, Middle Devonian (Givetian) Deep Springs Road Quarry, Lebanon, NY.

    © 2022 Tim Jones

  6. Fossildude19

    Rhinocaris - Part and Counterpart

    From the album: Fossildude's Middle Devonian Fossils

    Rhinocaris columbina phyllocarid single valve - Part and counterpart. Windom Shale Member of the Moscow Formation, Hamilton Group, Middle Devonian (Givetian) Deep Springs Road Quarry, Lebanon, NY.

    © 2020 Tim Jones

  7. Fossildude19

    Rhinocaris

    From the album: Fossildude's Middle Devonian Fossils

    Rhinocaris columbina phyllocarid single valve. Windom Shale Member of the Moscow Formation, Hamilton Group, Middle Devonian (Givetian) Deep Springs Road Quarry, Lebanon, NY.

    © 2022 Tim Jones

  8. Bear626

    Phyllocarid?

    I am new at this. I found possibly both halves of a phyllocarid(?) But not sure. It was found by me. Devonian. Found in shale outcrop Near Lebannon, NY. July 2022 Thanks for any info on this.
  9. Hey everyone! The other day me and a few other experienced collectors spent the day out in the Mahantango formation. After moving a literal ton of material we each came home with about 3 or 4 complete trilobites and plenty of other neat associated fauna. I found 2 different specimens that are incredibly interesting/rare a complete trilobite, Dechenella (I have to take the head off the counter part and glue it back onto the body after prep it will be fully complete.). This means I have a complete specimen of every species of trilobite in the Mahantango except the elusive and rare Neometacanthus and Monodechnella. The other specimen I found was a Phyllocarid valve. I have never seen Phyllocarid material in the Mahantango but It makes sense that they occur in the Mahantango. Let me know what you think.
  10. Nautiloid

    Complete Rhinocaris columbina carapace

    From the album: Nautiloid’s phyllocarid collection

    This is a nice 3D example of a Rhinocaris carapace, which was found by me on May 14 at a Middle Devonian site in Central NY

    © Owen Yonkin 2022

  11. Nautiloid

    Rhinocaris columbina

    From the album: Nautiloid’s phyllocarid collection

    This specimen shows one complete valve, part of the telson, and part of the second valve. It was found by me on May 14, 2022 at an exposure of the Middle Devonian Hamilton Group in Central NY.

    © Owen Yonkin 2022

  12. Nautiloid

    Rhinocaris columbina

    From the album: Nautiloid’s phyllocarid collection

    This is a great specimen of Rhinocaris columbina which I collected a couple summers ago. Both sides of the carapace are there as well as the majority of the telson, which is tucked around the underside of the rock.

    © Owen Yonkin 2022

  13. Nautiloid

    Echinocaris punctata

    From the album: Nautiloid’s phyllocarid collection

    This beautiful near-complete specimen was collected by me a couple summers ago at an exposure of the Middle Devonian hamilton group in Central NY.

    © Owen Yonkin 2022

  14. Nautiloid

    Rhinocaris columbina

    From the album: Nautiloid’s phyllocarid collection

    This specimen is a partial valve and a partial telson. It was collected by me on May 14 at an exposure of the Middle Devonian Hamilton Group in Central NY.

    © Owen Yonkin 2022

  15. Nautiloid

    Rhinocaris terminal telson piece

    From the album: Nautiloid’s phyllocarid collection

    This was found by me on May 14 at a site in Central NY. The site is likely an exposure of the Middle Devonian Windom Shale member of the Moscow Fm.

    © Owen Yonkin 2022

  16. My wife and I traveled up to western upstate NY this past weekend for Penn Dixie's annual dig with the experts event. This was our first visit to the park and we were happy to finally use up the tickets we had originally purchased for the 2020 dig. The event was sold out both days and the staff seemed happy to be back in normal operations. The weather was perfect, with bright sunny skies and temps in the 50s to 60s day 1 and 60s to low 70s day 2. Lots of folks digging: We didn't find anything crazy good, but didn't get blanked with a mix of brachiopods, cephalopods, clams, crinoid stem pieces, corals, trilobites and a partial phyllocarid. Mostly brachiopods with some horn corals: and mostly horn corals with a couple brachiopods: Hash plate of mostly brachiopods, needs cleanup so was hard to photograph: Another clump with multiple brachiopods: I was told clams didn't preserve as well at this location and I certainly didn't find many samples worth collecting: Nice 3d partial cephalopod, not sure how much is in the matrix, but both sides have similar levels of detail and this was by far the largest one we found: Good sampling of crinoid stem pieces plus a few others. My wife really liked the ones with a star shape in the middle. This is probably half of what we collected, though my wife did get some longer segments: Trilobite hash, not sure if any are complete: Double rollers: Not sure how much of this one is here and it does have a fine crack throughit, but should be easy to glue: Not sure if there is more on this one: Guillotine plate, nothing but heads... This one hurt, disarticulated but likely complete up top, then what would have been a perfect prone below if the excavator hadn't decapitated it as they created the dig piles: Full but squished and a little ragged on left, looks like complete roller on right: Closer shot of the one from above, he makes a 90 degree turn but looks to be complete: Another roller: Possibly mostly complete: Roller on upper piece, small horn coral on lower: Nice roller: Disarticulated molt: Could be complete: This last split is a little tough to see, I bumped the contrast a bit. Multiple dig experts identified it as a phyllocarid (and none dissented) which made me happy as that was the only thing I could come up with and staff said are a rare find there. Its my 1st, the only one I had seen before was one of @Al Tahan finds from central NY.
  17. Fossildude19

    Unidentified phyllocarid tail with telson

    From the album: Fossildude's Middle Devonian Fossils

    Phyllocarid tail with telson - (possibly Rhinocaris columbina) Windom Shale Member of the Moscow Formation, Hamilton Group, Middle Devonian (Givetian) Deep Springs Road Quarry, Earlsville, NY.

    © 2022 T.Jones

  18. Mainefossils

    Coprolite?

    I have just found this little coprolite? yesterday. This is the second time a coprolite-like fossil has turned up in the shale from the Leighton Fm. I am not really sure on this one, though, due to the presence of crinoid stems. The fossil(s) are from the Leighton Formation, Maine; which is Pridoli, Silurian. The main reason I think it is a coprolite is because of its situation in the shale. The rest of the shale around it is relatively uniform, with no fossils whatsoever. The fossils present in it are one crinoid stem, quite a few ostracods, a very small Orbiculoidea brachiopod, and an unidentified piece of rather bluish-black material in the center, possibly some sort of shell. My main concern for its identification as a coprolite is the wide range of rather large fossils in it. I don't know what animal would have had such a diet, except possibly a very large detritivore - but I don't know of any super large ones here. The only animals that I can think of producing coprolites in this formation would be eurypterids, phyllocarids, agnathan fish, and possibly trilobites. A coprolite of this size I would identify as an agnathan fish, but I would defer to some of our fish and coprolite experts for this. @jdp @GeschWhat Below are two photos of the two different sides of the coprolite. If you would like closeup photos of some of the fossils inside the coprolite, I have some available. Just did not want to overload this post with too many photos. Thanks in advance for your help everyone!
  19. Mainefossils

    Phyllocarid valve?

    This morning I split this shale (technically it fell apart on me), and found this interesting little fossil. I was thinking that there was a possibility of it being a phyllocarid valve, but I have never seen one. This also raises a question that I have been wondering - how do you differentiate between a phyllocarid and a bivalve valve when the tail is absent? What raised my suspicions on this specimen are the raised bumps on the external mold and the depressions on the cast. The pictures below are of the specimen. The first shows the cast/internal mold, and the second the external mold. It is from the Leighton Formation, Maine; which is Pridoli, Silurian. Thanks in advance for your help everyone! @Fossildude19 @mikeymig
  20. Thomas1982

    Is this a phyllocarid?

    Greetings, I found this in schuylkill county, Pennsylvania: part of the Mahantango formation. A couple people suggested that this could be a phyllocarid carapace, but I'm not sure... What do you guys think?
  21. Taxonomy according to Schram and Horner, 1978, p. 394. Diagnosis (Schram and Horner, 1978, p. 394): "Rhinocarid of large size; carapace covered with hairlike ornament; furcae about 1 ½ times as long as the telson." Dithyrocaris rolfei, reconstruction from Schram and Horner, 1978, p. 395. Identified by oilshale using Schram and Horner, 1978. References: Schram, F. R. and Horner J. (1978): Crustacea of the Mississippian Bear Gulch Limestone of Central Montana. Journal of Paleontology 52(2):394-406. Factor D. F. and Feldmann R. M. (1985): Systematics and Paleoecology of Malacostracan Arthropods in the Bear Gulch Limestone (Namurian) of central Montana. Carnegie Museum of Natural History. 54, 319-356. Jenner, R. A., Hof, C. and Schram, F. R. (1998): Palaeo- and archaeostomatopods (Hoplocarida, Crustacea) from the Bear Gulch Limestone, Mississippian (Namurian), of central Montana. Contributions to Zoology 67 (3) 155-185.
  22. Our recently discovered Devonian Phyllocarid is back from our preparator. Found on Collecting trip 4/9/2021 in New York state (#3 Phyllocarids we have with complete mandibles). This rare specimen has the classic pyritized Roemerella brachiopods attached to its carapace and the detail of the carapace itself is well preserved. What I was hoping and had very little chance of being antenna are serrated hinge lines. I never seen this on other specimens and the detail is amazing under magnification. The pincher like mandibles look to have color or pattern markings near the tips. I'm pretty sure the jaws are in life position. Phyllocarids are not common and complete or nearly complete specimens is rare. The bite marks I see on some trilobites I find at the same locality may have been caused by these nasty looking jaws.
  23. Fossildude19

    Echinocaris punctata Phyllocarid

    From the album: Fossildude's Middle Devonian Fossils

    Echinocaris punctata Phyllocarid Middle Devonian Hamilton Group, Moscow Formation, Lebanon, NY - Deep Springs Road Quarry

    © 2021 T. Jones

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