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Found 16 results

  1. Sjfriend

    Latham Shale unknowns

    OK, on my few trips to the Latham Shale in the Marble Mountains of Southern California I have found a few things that I'm just not sure of. I will include any info before each photo. Scale: little marks are 2mm, bigger numbered marks are cm 1: Ok, first I will include 2 photos of what I question as maybe trilobite hypostome. I haven't found any good illustrations of Olenellus hypostome. I've found probably 10 of these. They all look the same shape though many different sizes. 2: Next, I find a few of these each day. The cephalons from the trilobi
  2. Fossildude19

    Greenops sp. Middle Devonian

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

    Greenops sp. Middle Devonian, Hamilton Group, Upper Ludlowville Formation . Geer Road Quarry, Lebanon, NY.

    © 2021 Tim Jones

  3. Fossildude19

    Isotelus hypostome.

    From the album: Fossildude's Purchased/Gift Fossils

    Before and after prep. Still needs a bit more... This was a gift from my good friend, JimB88. Thanks Jim!

    © © 2013 Tim Jones

  4. Tetradium


    From the album: Trilobites of Minnesota Decorah/Platteville/Galena Formation

    Ceraurid hypostome. Platteville Formation (SW corner specimen) and rest are Decorah Formation. For a long time I thought it was little rolled up trilobites, that's how much the hypostome look like. Tiny .5 cm for Decorah ones and .6 cm for platteville ones. Decorah ones seem to be uncommon to common and very easily overlooked because of its tiny size. Heck I wonder how many had I overlooked over 5 years.
  5. Tidgy's Dad

    St. Leon Trilobite Bits

    Hello, my friends, tis I once more with queries regarding odds and ends found in matrix from Southgate Hill road cutting, St. Leon, Indiana. Late Ordovician from the Upper Arnheim, Waynesville, Liberty and Lower Whitewater formations. Is this first one a bit of free cheek with a spine base? The piece is 1.5 mm wide and the big brachiopod bottom left is the edge of a Strophomena planumbona. I am pretty certain that this next one is a hypostome. It looks like some of the Isotelus ones I have seen but is very small. 2.5 mm. A small Isotelus? Another trilo? Or the Millennium Falc
  6. I am looking at some rocks already collected from and am going back to the Latham shale location in the southern California desert and wondering if anyone knows of a photograph or good drawing of the hypostome from Olenellus / Mesonacis / Bristolia trilobites? Would hate to toss a rock only to figure out later what was on it Have looked a bit but im traveling so only have my phone and going through a bunch of PDFs is a pain! Thanks for any ideas! @Kane @piranha?
  7. Nautiloid

    Mystery hypostome in need of ID

    Hello everyone! So I was cleaning off a rock today and on it I found this tiny hypostome. I was wondering if anybody has an idea of what species this may have come from. This rock came from a site in North-Central NY that exposes the Ordovician Trenton Group. Thanks for looking!
  8. Hello everyone! I wanted to share some good news with you all... On Monday, March 16, 2020, I visited "Formosa Reef" in Ontario (Amherstburg Formation, Lower Devonian) for a little fossil hunt. One of the rocks that I found at the site had a trilobite piece that @piranha identified as the hypostome belonging to the trilobite Acanthopyge contusa. When I asked him if he knew of any museum/researcher who might be interested in my specimen, he suggested that I contact the Royal Ontario Museum (ROM), and so I did. First, I emailed David Rudkin, and this is what
  9. Tidgy's Dad


    Hello, my friends. This specimen comes from a wonderful hash plate, maybe my favourite hash, that was kindly sent to me by Ralph, @Nimravis It's from the Southgate Hill Road Cut, St.Leon, Indiana, USA and is Cincinnatian (Late Ordovician) in age, probably the Waynesville Formation, judging by the brachiopod assemblage. But could be Liberty. Is this a trilobite hypostome? And if so, is it likely to be Flexicalymene? The piece has several Flexi bits on it; a couple of pygidia and some free cheeks, the reverse has three cranidia. But I think there are Isotelus fragment
  10. minnbuckeye


    First of all, is this a hypostome? If so, is it a damaged one from Isotelus? Found in the Kope Formation, Ordovician along AA Highway in Kentucky. Thanks for looking at it and giving an opinion. Mike
  11. DrDave

    Trilobite hypostome ID

    Any idea what species of trilobite this comes from? (Or correct me if I’m wrong in my assumption that it is a trilobite hypostome) Tully, NY
  12. RCFossils

    Help With Iowa Trilobite

    This past weekend, I had a chance to collect a well known roadcut outside of Clermont Iowa. The site is Ordovician in age and exposes the Clermont section of the Maquoketa Formation. one of the interesting pieces that I collected was this tiny trilobite. As you can see from the picture,There is not much to go on however the hypostome is preserved. I am hopeful the Trilobite will be complete and was wondering if anyone might know what species it is/could be. Any help is appreciated.
  13. About a month ago, I headed out on two fossil trips to the well-known St. Leon roadcut in Indiana. I was hunting in the Liberty formation (late Ordovician) with the sole goal of finding some nice trilobites (which I definitely achieved!). Along with multiple rare trilobites, I was able to find some excellent examples of other fossils. The spoils were totally awesome, and I am itching to go back. I hope you enjoy. Best for last.
  14. hobbitfeet

    I have a hypothesis

    Over a month ago I found what I believe is my first hypostome near House Springs, Missouri. But it is much larger than the other trilobite pieces that I have found in the area. Since then I have been to the same roadcut and found what I believe to be two larger trilobite tails that might be something like Isotelus which may be the source of the hypostome. I just want other people's opinions if they think I'm on the track.
  15. Packy

    Trilobite Hypostome

    Found this in pile of waldron shale, could this be the ventral part of a Trimerus trilobite, possibly part of the hypostome? I searched the web for any documents to show a hypostome from that trilobite, but no luck. Packy
  16. Clanjones

    Whose Hypostome Is This?

    I am trying to prep a trilobite hypostome, but I can't figure out what species it belongs to. It was found in Forestville, MN.
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