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  1. On Wednesday I took a trip back to my Erieopterus spot in Pennsylvania to see if I couldn’t dig myself out a complete. After moving probably around 10 square feet of rock, all I came home with was some Algae’s, pterygotid pieces, and a Erieopterus Head. This is similar to the density of the Devonian Eurypterid faunas of NY. Ether way it’s looking like it’s gonna be a numbers game, and I don’t mind that with Eurypterids.
  2. Dean Ruocco

    Eurypterus dekayi

    From the album: Williamsville Waterlime

    Williamsville Waterlime Fort Erie Ontario.
  3. Dean Ruocco

    Ceratiocaris sp

    From the album: Williamsville Waterlime

    Williamsville Waterlime Fort Erie Ontario.
  4. Hello, my friends. One of my Eurypterus Tetragonophtalmus. Upper Silurian, Ludlow Epoch, Gortsky Stage, Ustovsk Formation (427.4 million years). Place of discovery: Khmelnytskyi region, Ukraine. Have a nice day 8.mp4
  5. Hiya everyone is interested in this eurypterid I’m no expert so any help would be great
  6. Dean Ruocco

    Undet. Mixopteridae

    From the album: Eurypterids

    Fairly articulated specimen of some sort of Mixopteridae from Guizhou, China. Positive side.
  7. Dean Ruocco

    Undet. Mixopteridae

    From the album: Eurypterids

    Fairly articulated specimen of some sort of Mixopteridae from Guizhou, China. Negative side
  8. Dean Ruocco

    Hughmilleria Shawangunk

    From the album: Shawangunk Formation

    Relatively complete juvenile.
  9. From the album: Fiddlers Green Formation

    Collected spring 2023 at Langs quarry by Dean Rucco and Allan Lang.
  10. Dean Ruocco

    Dolichopterus jewetti

    From the album: Fiddlers Green Formation

    Collected spring 2023 at Langs quarry by Dean Rucco and Allan Lang.
  11. Dean Ruocco

    Eurypterid Windrow.

    From the album: Fiddlers Green Formation

    A nice plate that displays current (look at the orientation of the body) flow. It hosts 3 Eurypterus remipes, one having preserved its Kiemenplatten (ancillary structures on the roof of the gill chamber). The real prize on the plate is a small relatively complete Dolichopterus. Collected spring 2023 at Langs quarry by Dean Rucco and Allan Lang.
  12. Izan

    Cambrian fossil of Zaragoza

    This summer a friend brought me this rock from the town of Pomer (Zaragoza). The age of the rocks in the area is Cambrian and I think it could be some kind of arthropod, I don't know... It was found at an altitude of 1300m. Can someone help me?
  13. Recently, I spent 5 days at Lang’s quarry collecting fossils and hanging out with some friends. We broke large blocks in the quarry searching for Eurypterids and Pterygotids, of which we found many including a multi-plate. Are best find was a small incomplete Proscorpius, pictured below. After taking apart a large number of plates, I asked Allan if I could start a bench in situ, he liked the idea and I started to dig a pit out. The rock was weathered perfectly due to it receiving a chemical weathering rather than a physical weathering. The bench produced lots of Eurypterus, It was a fun little experience as most localities in the Fiddlers Green I’ve dug in weren’t weathered enough to really produce nice plates. Below I’ll attach a few pictures of some of the many Eurypterids we found and some pictures of are dig. I’d also like to thank Allan Lang for all of his help throughout the years. He’s taught me how to collect eurypterids properly, and is generous enough to invite me to dig often. Thank you Allan, you’ve changed my life.. 1. Hand exaction of the Phelps waterlime in situ. 2. Excavator exposing a large plate for us to take apart. 3. Decent Eurypterus laculatus, 4. Small Eurypterus remipes from my bench. 5.Small Eurypterus remipes in situ. 6. Extremely rare Dolichopterus jewetti 7. multiple plate of Acutiramus macrophthalmus 8. Large Eurypterus laculatus 9. Small Proscorpius osborni
  14. Al Tahan

    A day of Eurypterids

    I’ve been a little dormant in the forum in the last couple year but it’s not for my lack of interest in fossils!! Sometimes it’s just hard to set time aside for everything. I have some fossils I want to donate to the forum and I hope writing it here will help me hold myself accountable to make the time to post them I moved to Frankfort, New York last year which situated me 30 minutes from the well known Lang’s quarry and only 15 minutes from an exposure of the Bertie formation (great place for looking not finding haha…the rock is bulletproof). Moving with a massive fossil collection is something I wouldn’t wish on my worst enemy!! I’m still not fully unpacked and set up my library display. Anyways, I was able to schedule a day with Al Lang to dig at his quarry. He’s not doing many pay to digs these days. Kinda winding down on those ventures but I have a little back history with Al so he was generous enough to have me over. Pictures incoming!
  15. Here are some rare Eurypterids I traded and then received in the mail yesterday. Fossil one: Undescribed stylonorid from the Silurian of Ukraine. Fossil two: Adelophthalmus sp. from the carboniferous Knob noster Missouri. This specimen is preserved in a nodule, and I have pictures of both halves.
  16. Dean Ruocco

    Undescribed Stylonorid

    From the album: Eurypterids

    Here's an extremely rare eurypterid from Ukraine, I don't know much about it other than it being found close to the eurypterus beds.
  17. Dean Ruocco

    Adelophthalmus sp.

    From the album: Eurypterids

    From Noudules near knob noster.
  18. Dean Ruocco

    My Megalograptus specimens.

    Hello all, Below are my best specimens from the Ordovician family of Eurypterids know as Megalograptus. Top to Bottom. undet. Megalograptid from the Reedsville shale at Swatara gap, Pennsylvania. Then 2 Megalograptus ohioensis from the Cincinnatian shales in Ohio. Note the Isotelus head on the bottom specimen. Undet. Megalograptid from the Pontgrave Formation in Canada. Lastly another Megalograptus ohioensis.
  19. Dean Ruocco

    Megalograptus cuticle with Isotelus head.

    From the album: Eurypterids

    Cincinnatian shale,
  20. Dean Ruocco

    Erieopterus. sp.

    From the album: Pennsylvania Eurypterids

    Heldenberg group, collected 5/3/23
  21. Kikokuryu

    Chinese Eurypterid?

    I purchased this as a supposed Silurian Megalograptus from Yunnan a while back. The seller gave me additional information that it came from the Devonian Cuifengshan Formation in Qujing, Yunnan, China. However, the genus Megalograptus is Ordovician in age. I'm not really familiar with eurypterids, so maybe it's not even a sea scorpion. It certainly looks like some kind of invertebrate though. But maybe it's just indeterminate debris. Image 1 - Measurement is in millimeters. Image 2 Image 3 Image 4
  22. Dean Ruocco

    Hughmilleria Shawangunk

    From the album: Pennsylvania Eurypterids

    Shawangunk Formation.
  23. Dean Ruocco

    Eurypterus sp.

    From the album: Pennsylvania Eurypterids

    An excellent specimen from the Salina Group
  24. Dean Ruocco

    Eurypterus sp.

    From the album: Pennsylvania Eurypterids

    Salina Group.
  25. Hello All! For awhile I've known the Keyser Formation hosted eurypterids, and today was the day I encountered it! Me and 2 geologist gained access to an exposure on private property and were surveying it when I found a waterlime bed with overlying mudcracks, I would start my typical survey of the bed when I encountered a segment, and it just got better from there. Unlike other horizons I've collected all over this layer is not very dense, but consistently the bed was producing. After about 4 hours of intense digging I decided to call it quits for the day. 2 different and distinct eurypterid Species have been collected, one is some sort of Pterygotid likely the genus Acutiramus, and the other is the genus Erieopterus. The Erieopterus differs from the only other Devonian Eriopterus, Erieopterus microphthalmus in its head shape, with it being wider and the eyes being spread further. The best specimens collected were a plate with 2 heads on it and a Tergite from a pterygotid. Ill attach some pictures below. Top to Bottom: Erieopterus sp. Double head Erieopterus sp. (Note the legs on the left specimen) Pterygotid undet. close up of the scales, Pterygotid undet. Layer specimens were collected from.
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