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  1. Thomas1982

    Dipleura dekayi

    From the album: Mahantango Formation

    Dipleura dekayi Schuylkill County, Pennsylvania
  2. Fossildude19

    Unidentified Gastropod

    From the album: Fossildude's Middle Devonian Hamilton Group Fossils

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

    © © 2011 Tim Jones

  3. 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 Neometacanth
  4. 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...
  5. A.C.

    Eldredgeops rana

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

    Mahantango Formation, PA
  6. A.C.

    Eldregeops Rana

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

    Mahantango Formation, PA
  7. A.C.

    Various Trilobites

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

    Mahantango Formation, PA
  8. A.C.


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

    Mahantango Formation, PA
  9. 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 Linsl
  10. 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?
  11. 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
  12. From the album: Fossildude's Middle Devonian Hamilton Group Fossils

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

    © 2021 Tim Jones

  13. Part three to my safekeeping series. These are some of my finds from the middle Devonian Mahantango Formation of Maryland. Unlike the other formations I posted about, this one is pretty well known for it's fossil contents, so I will keep the introduction and background brief. For those who don't know the Mahantango is a middle Devonian aged marine shale that's part of the Hamilton Group in Maryland. For the most part it's fauna is dominated by brachiopods, but occasional gastropods, tentaculitids, and other animals show up as well. It was deposited in a shallow inland sea with the depth of the
  14. GordonC

    Mahantango eye openers

    Thanks, I'm baffled by these except what looks like a Dipluera cephalon partial , last photo. Collected yesterday, near Milford Pa. Gordon Below, these part of a single piece. Closeup of pattern Two views below Note center horizontal segmented Partial cephalon
  15. WhodamanHD


    Found this pretty little fossil in some Mahantango Formation rocks, and it was by itself and Three D, unusual for the site. Any ideas on the species? Givetian, mid-Devonian, Washington county, MD, Mahantango Formation. Any ideas? A post on the trip I found this from to come...
  16. Hey there! I'm sorry its been so long since I've posted on here but suffice it to say I need your help. I'm planning a six to seven day fossil hunting trip in Pennsylvania (sometime in mid august) and I need your help verifying that the sites I've picked to visit from Robert Beards guide Rock Hounding Pennsylvania are still accessible to collecting as well as coverable given my time frame. The places I'm looking at hunting are sites 27. Beltzville State Park (Outcrops on shoreline), 28. Lehighton, Lehigh Canal (Former borrow pit and outcrop),30. Deer Lake (Borrow Pit), 33. Suedberg
  17. (Note: this was originally posted under fossil trips) Hey there! I'm sorry its been so long since I've posted on here but suffice it to say I need your help. I'm planning a six to seven day fossil hunting trip in Pennsylvania (sometime in mid august) and I need your help verifying that the sites I've picked to visit from Robert Beards guide Rock Hounding Pennsylvania are still accessible to collecting as well as coverable given my time frame. The places I'm looking at hunting are sites 27. Beltzville State Park (Outcrops on shoreline), 28. Lehighton, Lehigh Canal (Fo
  18. WhodamanHD

    A few more confusing bits...

    I'm still splitting some of the West Virginia mahantango rocks @Rocky Stonergave to me, and I found these too things. One broke as it fell out, so I'm hoping very hard it's not a trilo that I broke the next one also has horizontal lines on it, and a ridge in the middle, which reminds me of a pygidium. I'm not gonna get my hopes up though, what do y'all think?
  19. WhodamanHD

    Trilo bit?

    I was prepping out a shell (it may seem stupid but I don't trust myself with other things) in a piece of matrix given to me by @Rocky Stoner (thx for the stones!) and this little dotted piece caught my eye. Could it be a frag of a trilobite, or is it the usual suspects. I am btw not referring to the obvious bryozoan, but the shiny piece with four holes.
  20. WhodamanHD

    Calling trilobite experts

    I got to hunt on the trilobite ridge for a very short time, thanks to @GordonC for letting me know it existed and Jeff from this site for the directions and other tips. I had a very short time to hunt, but it was productive. I've got lot of spiriferids and other goodies, but best of all the first thing I saw, as if placed by divine intervention, a trilobite pygidium! This is the first real trilo I've found, although I find an extremely small piece of one in Maryland, so this is why I'm very excited even for a fragment. Any one know the species? I know it could do with some prep, but it's to de
  21. EMP

    Fish Tooth?

    I found this in the Devonian Mahantango Formation from a road cut in western Maryland. Is it a fish tooth, and if so, what genus or species?
  22. A break in the weather and disappearance of the snow cover invited this trip yesterday to Sparrowbush NY about a mile downriver from a recent hunt at Millrift PA. This location in perhaps the Mahantango Formation or Upper Devonian Sloat Brook Formation. Ids are looks like basis from Wilson's Field Guide. For the others ids appreciated. Gordon Goniophora chemungensis Grammysia bisulcata Trilobite pygydium Cephalopod? Pustulose Seeing Stars? Plate
  23. From the album: Middle Devonian

    Ancyrocrinus sp. (anchor-shaped crinoid holdfasts) Middle Devonian Mahantango Formation Swopes farm Turbotsville, PA.
  24. I_gotta_rock

    Swatara Whats-its

    Found two fossils with any distinctive shape this weekend at Swatara State Park in PA. The ridged one I'm thinking is a jumbo crinoid of some sort, but I've never seen one bigger around than a pencil before. It looks like it had concentric rings and the one end seems to show the outline of where the critter stopped and the clay hardened around it. Thoughts? Also, I spilt this one open and almost missed it because I was looking for something 3D, but it is too regular a pattern to be a random pattern in the mud. Thanks to anyone who has ideas!
  25. PA Fossil Finder

    Brachiopod In Concretion (Lingula?)

    I found this nice brachiopod poking out of a concretion when exploring the Montour Fossil Pit. A good whack with my hammer and it split, exposing the entire fossil. The shale exposed is Devonian, Mahantango Formation. I think it is an inarticulate brachiopod like Lingula. It's a little crushed, but I like how it looks on the round concretion. Just goes to show that cracking concretions can be worth it! This is how it looked at first: And after I split it:
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