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Found 22 results

  1. I'm off today not feeling well and was walking my dog. I happened to look down at the rocks in my yard and found this nice thorax and pygidium of a trilobite. I only know the rocks exposed are in the Mahantango. This is the first recognizable fossil I've found aside from small brachs.
  2. My sons and I went on a Boxing Day expedition to the Mahantango Formation in West Virginia, and lots of fragmentary trilobites and brachiopods but also some nicer more complete specimens. We were really happy with the two Eldredgeops Rana specimens. We also found a trilobite fossil with its impression (see second photo). It was like opening a present when we split open the layer and lifted it to reveal the fossil! Not sure what the second one is, though. We're all new to this, so any identification suggestions would be welcome. Thanks!!
  3. bockryan

    Sulcoretepora cf. S. incisurata

    From the album: Fossil Collection: DC Area and Beyond

    Sulcoretepora cf. S. incisurata Dalmatia, PA Mahantango Formation Middle Devonian
  4. bockryan

    Grammysioidea sp.

    From the album: Fossil Collection: DC Area and Beyond

    Grammysioidea sp. Deer Lake Tavern, PA Mahantango Formation Middle Devonian
  5. bockryan

    Paraspirifer sp.

    From the album: Fossil Collection: DC Area and Beyond

    Paraspirifer sp. Deer Lake Tavern, PA Mahantango Formation Middle Devonian
  6. Family and I took a trip to Beltzville State Park earlier this week. We stayed around the lake, looking along the shoreline and wading through water. Found some pretty cool Middle Devonian fossils. My wife lucked out with two Trilobite pieces, one of which is a really nice head imprint. I'm still working on identification, so please bare with me. Any help of course is appreciated. Coin is 22mm Shoreline Trilobite head (Phacops rana?) surrounded by Crinoid stems Trilobite (Phacops rana?) - lower abdomen Crinoid stems Crinoid stems Pleurodictyum tabulate coral (?) and brachiopod Crinoid stems Brachiopods and I'm not sure what the orange/black dotted impression is.
  7. 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.
  8. Since we both had the day off, my daughter and I spent a couple of hours at the Deer Lake site (Schuylkill County PA). It was a beautiful sunny day in the mid 50s! A good start to this years fossiling adventures...
  9. Thomas1982

    Dipleura dekayi

    From the album: Mahantango Formation

    Dipleura dekayi Schuylkill County, Pennsylvania
  10. Fossildude19

    Unidentified Gastropod

    From the album: Fossildude's Middle Devonian Fossils

    Found in 2008. Deer Lake, PA. Mahantango Formation. Middle Devonian

    © © 2011 Tim Jones

  11. 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.
  12. A.C.

    Eldredgeops rana

    From the album: A.C.'s Devonian Pennsylvania

    Mahantango Formation, PA
  13. A.C.

    Eldregeops Rana

    From the album: A.C.'s Devonian Pennsylvania

    Mahantango Formation, PA
  14. A.C.

    Various Trilobites

    From the album: A.C.'s Devonian Pennsylvania

    Mahantango Formation, PA
  15. A.C.

    Platyceras

    From the album: A.C.'s Devonian Pennsylvania

    Mahantango Formation, PA
  16. Misha

    A few Mahantango finds

    I recently visited a few formations around PA, The Montour preserve pit happened to be on the way and I stopped by, The location was quite picked over as @historianmichael told me, but we did manage to get some nice finds. I will post a trip report later but for now, I want to get some IDs for some of my finds from here and another location. First, is what I thought in the field was a brachiopod but upon closer inspection, I realized that this is probably my first pteriomorph mollusk which is very exciting for me, my question is: Which? I looked through Linsley and multiple look similar, I just don't have enough experience with these to really be able to tell.
  17. 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?
  18. bbs07933

    Fossil ID please (Mahantango)

    Hello, This is a fossil from the Devonian Mahantango formation in PA. Looks like some bryozoan but the pattern seems too fine for a Fenestella. The dimensions of the fossil (not the rock sample) are 60x30mm. I looked around at a few books and fossil ID guides but did not find any direct comparable. Any help would be greatly appreciated. Boris
  19. From the album: Fossildude's Middle Devonian Fossils

    Middle Devonian Mahantango Formation. Swopes Farm/Turbotsville borrow pit. Turbotsville, PA.

    © 2021 Tim Jones

  20. From the album: Middle Devonian

    Ancyrocrinus sp. (anchor-shaped crinoid holdfasts) Middle Devonian Mahantango Formation Swopes farm Turbotsville, PA.
  21. Jeffrey P

    Cyathophyllum robustum, Rugose Coral

    From the album: Middle Devonian

    Cyathophyllum robustum (Rugose coral) Middle Devonian Mahantango Formation Swope's Farm Turbotsville, Pennsylvania
  22. From the album: Middle Devonian

    Orthonata undulate (bivalves "razor clams") Middle Devonian Mahantango Formation Deer Lake, Pennsylvania
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