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Showing results for tags 'placoderm'.
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Manticocerasman's Manticoceras collection and other Frasnian fossils.
Manticocerasman posted a topic in Member Collections
Our fossil shed is finally done, with the last work of the carpenter to install a door and the last bits of insulation. So now it is time to clean up the place and reorganise a little. This weekend I took a selection of my best material out from the Lompret quarry in Belgium and started to reorganise it. Most of it are Gephuroceratidea goniatites like Manticoceras sp. And Crickites sp. , but also some Oncoceridea, Orthocones, crinoids, placoderm and more. I’ll be taking more pictures this week when I keep on filling the cabinets. pics on both sides from the 1st- 23 replies
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Holy grail Dunkleosteus terrelli partial skull for my collection
Pliosaur posted a topic in Member Collections
Hello everyone! I wanted to share a holy grail fossil that I have obtained: a partial skull of Dunkleosteus terrelli found in Cleveland Shale, Ohio This specimen has been confirmed by Zerina Johnson, a leading paleontologist at the Natural History Museum of UK as well as James Boyle who is a leading expert in the field and published academic research papers on Dunkleosteus and other placoderms of the Devonian period. Below is an excerpt from James Boyle on the Dunkleosteus partial skull specimen: "Yes, it's most like a Dunkleosteus based on what I ca -
From the album: Dunkleosteus terrelli partial skull
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- armoured fish
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Dunkleosteus terrelli - Skull elements Fish Devonian Cleveland Shale - Cleveland, Ohio, USA Very Large 790mm (31 inch) slab with partial skull This is from James Boyle Ph.D a clinical assistant professor specializing in the study of placoderms. He noted: “Yes, it's most like a Dunkleosteus based on what I can see. You have both anterior dorsal lateral plates of the thoracic armor there. These are the bones that connected with a mobile joint the head and shoulder regions of the armor. The bone to the bottom left is the internal view of the left
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Recently acquired this rare 185mm nuchal bone from Dunkleosteus Terrelli, just thought to share it since there are very few Dunkleosteus material on the commercial market! Attached pictures below just to see the size of this since on most fish it's the size of your thumbnail! Devonian Cleveland Shale Cleveland, Ohio USA 185mm (7.2 inches) nuchal bone
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Dunkleosteus terrelli Devonian Cleveland Shale Cleveland Ohio, USA I've attached some pictures of where the nuchal bone is located on Dunkleosteus and what it looks like, also included two articles that are interesting reads! Fusion in the vertebral column of the pachyosteomorph arthrodire Dunkleosteus terrelli (‘Placodermi’) - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Dunkleosteus-terrelli-CMNH-50322-from-Late-Devonian-Famennian-Cleveland-Shale-of_fig1_332926169 [accessed 23 Jan, 2023]
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From the album: Sharks and fish
Front side of armor which I believe could be the edge of the jaws! It comes to what would have been the razor sharp shearing edge, greatly worn down now, though. I also believe it could be the jaw because of the clear vertical wear lines on the surface, from being sheared against the inner surface of the other jaw, which is how they kept the edges razor sharp like scissors. I have seen similar wear lines on placoderm shearing jaws, so what I believe to be reasonable observations point to the possibility(maybe even likely?)of being from the cutting edge of the jaws. -
Hi guys, I was considering purchasing the attached fossil fish from the Devonian of Scotland. It originates from the Sandwick Fish Beds of Orkney. Any advice with regard to any visible restoration or even its authenticity would be very much so appreciated!
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So I found these bones in a block of Bois Blanc fm., which dates this to around the middle Devonian. When it was found the block was in several pieces which at the time I didn't realize was associated, but upon further inspection I found the pieces fit together. Interestingly the fossils are not layered and appear at random depths throughout the block, not just in one layer. Because of this I think there may be more to be discovered in the rock. I tried prepping a smaller bone fragment out, but it turns out the bone is much softer than the matrix and the bone fragment is now many fragments. I
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A couple months ago I took a trip to collect in the Middle Devonian of Iowa. It was a pretty good trip. I found some nice stuff and chatted with some very nice folks. Here are a couple of my finds. A partial ptyctodont tooth plate A neat sponge. I believe the genus is Astraeospongia but please correct me if I'm wrong. I was told these are rare from this area. A partial nautiloid And a partial Eldredgeops norwoodensis
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From the album: Misha's Middle Devonian Fossils
Ptyctodontid gnathal plate Givetian Silica Shale Fm. Paulding Ohio- 4 comments
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From the album: Misha's Middle Devonian Fossils
Microbrachius dicki Eday flagstones, Orkney- 2 comments
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Ahoi, I just finished a model of Dunkleosteus the lazy way, because I don´t have that much time these days. Lazy way means: Skull is a bought model from kaiyodo dinotales, postcranial is a skeletal drawing by Scott Hartmann I modified slightly and printed on some transparent foil. Like the outcome. It is quite small though, only 15 cm, representing a meager 3m in my chosen scale. can anyone tell what the other two are? both recent species, one handmade after a photograph, the other 3d printed from ct data. As I don´t know if I can add tags after posting
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Took the long trip to Red Hill for the second time today, my first attempt was fun but I found absolutely nothing and was totally confounded by the site in terms of where to look and what even to look for. This time I returned after a lot of reading and watching and did much better and (I think) found my very first Paleozoic vertebrate fossils! Curious if anyone experienced with the site could tell me about these and if anyone has any collecting (or preparation!) tips for the site. Also if anyone is planning any trips this season I'd love to tag along! First find was broken sadly,
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Acanthodian and Placoderm Fins/Spines from Red Hill
Jeffrey P posted a gallery image in Members Gallery
From the album: Upper Devonian
Acanthodian and Placoderm Fin/Spines Upper Devonian Catskill Formation Duncannon Member Red Hill Hyner, PA.- 1 comment
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I collected this piece of placoderm bone a while ago from the Cedar Valley Formation (Middle Devonian) in Iowa. Most bits I've found are just "indeterminate bone bits", but this piece has enough structure that I am hopeful it can be identified to a specific part of the anatomy. It superficially reminds me of a cranial element posted by @Peat Burns a while ago from the Silica Shale in Ohio. However I am too unfamiliar with placoderms to say exactly where this piece of bone might have come from, and I was hoping a forum member might have some input. Thanks fo
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Never seen this texture on a brachiopod or bryozoan before. Found in Wisconsin gravel.
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I’m legitimately lost as to what this could be. Devonian, Milwaukee formation. Fish tooth plate?
SilurianSalamander posted a topic in Fossil ID
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From the album: Misha's Late Devonian Fossils
Toothplates from the placoderms Ptyctodus sp. Late Devonian (Frasnian), Krivoborie quarry, Voronezh region, Russia. -
From the album: Misha's Late Devonian Fossils
Armor bits from antiarch placoderms Asterolepis ornata. Lower Frasnian, Late Devonian, Lode Quarry, Latvia.-
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From the album: Misha's Late Devonian Fossils
My second Bothriolepis sp. flipper partial. This one is smaller but also nicely preserved. Found at the same roadcut Late Devonian, Catskill Fm., PA.-
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From the album: Misha's Late Devonian Fossils
Plate of small mixed fish bits from the late Devonian with a difficult to see but large piece of Bothriolepis sp. flipper in the middle of the block. Rte 15, Late Devonian, Catskill Fm., PA.-
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Unusual find of putative Placoderm Fossil at Penn Dixie
Biotalker posted a topic in General Fossil Discussion
At the “Dig with the Experts” earlier this month at Penn Dixie, I found this interesting surface fossil on a block that the on location experts seemed to agree was a placoderm fossil. Approximately 5 inches (12.5cm), it is thin, pigmented and has intermittent perforations or pustules. In an adjacent pile, another more extensive and remarkable set of fossil strips like this presumptive placoderm were found by another rock buster. Anecdotally, it was remarked by staff that these two putative placoderm blocks were excavated from the “same region” of the pit as the apparent Dunkleosteus jaw discov- 8 replies
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Found this maybe ostrocod and this maybe placoderm “tooth” plate in the Waukesha formation - Devonian. Acid prepping it atm. What is it?
SilurianSalamander posted a topic in Fossil ID
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We recently moved to a new house, so It has been quite a busy few weeks since we last made a field trip. So I hadn’t much time to post the recent finds. On our last fieldtrip to the Belgian Late Devonian I made an exceptional find that I still wanted to share: I found a large piece of bone sticking out of a nodule. After the preparation and a some research I ‘suspected that the piece was a ADL (anterior dorsal lateral) armor plate from a Dunkleosteus. I’ve sent the pictures to a friend Palaeontologist specialised in Palaeozoic fish who confirmed the ID. Dunkleosteus
