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  1. Tidgy's Dad

    Adam's Early / Lower Devonian

    The Devonian period is known as "The Age of Fish", but could also be known as "The Age of Brachiopods." In the Early / Lower Devonian, brachiopods reached the height of their diversity towards its end in the Emsian. We see the ancestral groups occurring, lingulids, craniids, orthids, protorthids, pentamerids, rhynchonellids and strophomenids, as well as the later successful groups we have seen before such as atrypids, athyrids and orthotetids, plus the rise of spiriferids, spiriferinids and productids and the beginning of the terebratulids. By the end of the Devonian , several of these groups are extinct or severely reduced in importance and brachiopods never quite recover. Also, the Devonian is the last time we see trilobites with such variation, large sizes and numbers and orthocerids too are much more uncommon after the rise of the goniatites. The massive tabulate coral reefs also disappear after the Devonian. Fascinating period and I hope to share some of its wonders with you. Equally, a lot of this is rather new to me, so I would be very grateful for any assistance, corrections or further information on my specimens. Thank you. The Early Devonian epoch is split into three stages, so let's start with the first of those, the Lochkovian, that began about 419 mya and finished roughly 411 mya. I have been sent a nice selection of brachiopods from the Kalkberg Formation, Helderberg Group by the Mighty @Misha, mostly. But the kind gentleperson also sent me this fascinating little bryozoan hash : It is dominated by fenestellids, which is usually the case in the Devonian, but other orders sill occur. These ones, I think, are Fenestella, but there are so many species in the formation that I wont take a guess as to species : Not sure what this one is ;
  2. Jeffrey P

    Crinoid Stem Pieces

    From the album: Lower Devonian

    Cinoid stem pieces Lower Devonian Kalkberg Formation Helderberg Group Leesville, NY
  3. Jeffrey P

    More Leptaena Brachiopods

    From the album: Lower Devonian

    Leptaena rhombonatis (brachiopods) Lower Devonian Kalkberg Formation Helderberg Group Leesville, NY
  4. Sorry, the quarter was all I could find for a scale reference. My 8 year old spotted this in an area with lots of small Devonian fossils (crinoids, etc.). I thought this looked a bit like a portion of a eurypterid, but I am very inexperienced, and would not be surprised to find that I am waaaaaay off base. Any help with an ID would be very much appreciated! Thanks!
  5. Nautiloid

    Cornulites from the Manlius Formation

    From the album: Lower Devonian Helderberg Group in Eastern NY

    Cornulites chrysalis Upper Silurian/Lower Devonian Helderberg Gr. Manlius Fm. Albany Co. NY Collected 6/27/19
  6. I recently broke open a few slabs of rock I took home with me from Rickard Hill Road in Schoharie the last time I was there. The rock was very crystalline and hard to break and there weren’t a ton of fossils inside. I did manage to find a couple of trilo-bits that were very well preserved and very detailed. One of these bits I’m having a bit of trouble identifying. I’m almost certain it’s a trilobite pygidium but it looks like nothing I’ve ever seen before. The great preservation makes the details of the shell stand out. It is around 1cm long and wide.
  7. From the album: Lower Devonian Helderberg Group in Eastern NY

    Plate of brachiopods including Howellella cycloptera, and bryozoans including Fenestella crebipora. Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20
  8. From the album: Lower Devonian Helderberg Group in Eastern NY

    Favosites helderbergiae Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20
  9. Nautiloid

    Bivalve from the Kalkberg Formation

    From the album: Lower Devonian Helderberg Group in Eastern NY

    Actinopteria textilis Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/20/20
  10. historianmichael

    Helderberg Marine Fossil ID

    I collected today in an exposure of the Helderberg Group in NY. The Helderberg Group is Lower Devonian, and rich in marine fossils. We found this in the mine and could not come up with any kind of ID. It is possibly part of a horned coral? Or a brachiopod? Please let me know your thoughts. I can also provide more photos if necessary, I tried to capture the different angles. It is an interesting thing.
  11. Jeffrey P

    Lower Devonian sponges

    From the album: Lower Devonian

    Hindia sphaeroidalis (sponge) Lower Devonian Kalkberg Formation Helderberg Group Schoharie, NY
  12. From the album: Lower Devonian

    Bryozoan seen in cross section Lower Devonian New Scotland Limestone Helderberg Group Catskill, NY
  13. Jeffrey P

    Another Macropleura Brachiopod

    From the album: Lower Devonian

    Macropleura macropleura Lower Devonian New Scotland Limestone Helderberg Group Catskill, NY This one's much larger than the specimen from Schoharie.
  14. From the album: Lower Devonian

    Partial trilobites: cephalon, thorax/pygidium Phacops logani Lower Devonian New Scotland Limestone Helderberg Group Hudson, NY
  15. Jeffrey P

    Crinoid Floating Root Base

    From the album: Lower Devonian

    Crinoid floating root base Lower Devonian Kalkberg Formation Helderberg Group Schoharie, NY
  16. Jeffrey P

    Crinoid Root Base

    From the album: Lower Devonian

    Crinoid root base Lower Devonian Kalkberg Formation Helderberg Group Schoharie, NY
  17. From the album: Lower Devonian

    Crinoid stem section with arm attachments Lower Devonian Kalkberg Formation Helderberg Group Schoharie, NY
  18. Jeffrey P

    Trematospira Brachiopod

    From the album: Lower Devonian

    Trematospira multistrata Lower Devonian Kalkberg Formation Helderberg Group Leesville, NY
  19. Jeffrey P

    Strophonella Brachiopod

    From the album: Lower Devonian

    Strophonella sp. Lower Devonian Kalkberg Formation Helderberg Group Schoharie, NY
  20. Jeffrey P

    Spirifer Brachiopods

    From the album: Lower Devonian

    Spirifer perlamellosus Lower Devonian Kalkberg Formation Helderberg Group Schoharie, NY
  21. Jeffrey P

    Macropleura Brachiopod

    From the album: Lower Devonian

    Macropleura macropleura Lower Devonian Kalkberg Formation Helderberg Group Schoharie, NY
  22. Jeffrey P

    Machaeraria Brachiopod

    From the album: Lower Devonian

    Machaeraria formosa Lower Devonian Kalkberg Formation Helderberg Group Schoharie, NY
  23. Jeffrey P

    Stenoschisma Brachiopod

    From the album: Lower Devonian

    Stenoschisma formosum Lower Devonian Kalkberg Formation Helderberg Group Schoharie, NY
  24. Jeffrey P

    More Meristella Brachiopods

    From the album: Lower Devonian

    Meristella princeps Lower Devonian Kalkberg Formation Helderberg Group Leesville, NY
  25. Jeffrey P

    Atrypa brachiopod (close up)

    From the album: Lower Devonian

    Atrypa reticularis (close up view) Lower Devonian Kalkberg Formation Helderberg Group Leesville, NY
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