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Hi all Grateful for any ideas on this. Found at Aust cliffs, Westbury Bone Formation. Assumed to be a fish (poss reptile) jaw bone. My working assumption is it is either Gyrolepis albertii or Severnichthys acuminatus or one of the (six?) other bony fish taxa from this part of the world. Have quite a few other bits to ID soon too! I hope the images line up. The teeth get smaller as the rock, and bone, narrows, and line up where the rock has broken [due to falling from the cliff - not me!]. The appear to curve inwards. To me they look more Gyrolepis but I have never handled a jaw bone from the fish here so not too sure. Bone seems quite thick to me. Thank you, Ashley
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Hello. I am relatively new to all of this and want to learn more about Aust and tiny teeth in particular!
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Hi all, This is a follow-on from the first post in my ‘Adventures in Thin Sectioning’ thread where I showed this fossil from the Aust bone bed. I wanted to have it scanned so that I have a record of both halves before I try to make histological sections of the ‘offcut’. Luckily, my department has a micro X-ray CT scanner (Nikon XT H 225ST) and when there was a gap in demand I was able to book time for a couple hours of scanning. I got three separate scans done, the two pieces of the Aust block done together and then two articulating fragments from the Woodhill Bay Fish Bed at Portishead which are full of upper Devonian placoderm and sarcopterygian fragments. Florists foam is used to hold the pieces in place during scanning as it is easy to press the rocks into and low enough density as to not interfere with the scan. The scan for the Aust block took a little over an hour, and after reconstruction the vertebra is differentiable. The scan isn’t brilliant due to the abundance of pyrite in the stone which scatters the X-rays but it should hopefully be good enough to segment out the bone by hand and make a 3D model, so mission accomplished! The scans for the Portishead material were much shorter exploratory scans (>30 minutes) but turned out better due to the lower density sandstone matrix and lack of pyrite. Both pieces are full of fragments of scale and bits of bone but the larger of the two has a couple particularly interesting features. A large ?spine which I haven’t yet identified: A fragment of jaw with three teeth, likely belonging to the Sarcopterygian Holoptychius: Using a free program called Drishti I’ve been able to quickly reconstruct the Portishead scans in 3D and while the differentiation between bone and matrix isn’t fantastic it is good enough to get an idea of the spatial arrangement of the fragments. I intend to spend some time learning to segment out the fragments individually in Dragonfly (another free program for working with slice data) but am currently struggling with a few bugs so that will have to come later. The two fragments as rendered volumes in rough alignment: A rough rendering of the locations of the bone/scale fragments in both blocks. I believe the majority of the scales are Holoptychius as it is the most abundant taxa in this deposit: Close up on the area with the fragment of jaw, the three teeth are clearly visible as well as the stumps of two others: Thanks for looking, let me know if you have any questions.
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Found this at Aust Cliff, is it a fish fin spine? I believe there is also a single fish scale. sorry for low quality photos
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Heading over to Aust Cliffs in the uk, anyone got any advice or tips on how to fossil hunt in that area (should i fossil hunt in the upper parts of the beach or in the low tide areas?). Any advice would be apreciated!
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Hi, I found this tooth- like fossil in a piece of bone bed in Aust, by the Severn Bridge in Bristol UK. I think it is an Icthyosaur tooth but I would like an expert opinion as I am a complete amateur. When I first found it I thought it was a bit of bone and stored it away in my shed. When I rediscovered it last week, it was crumbling badly so I did apply a bit of super glue to it to stabilise it and that's why it's a bit shiny. I know that's probably a bad thing to do but otherwise it would have disintegrated. Please could someone also advise what I should have done to stabilise it for future reference. Thank you,
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Hi, picked this up at Aust today, only looked twice after seeing a video on icthyosaur coprolites found at charmouth. It has a lot of material in and the same pear shape, hard to identify anything expect for one possible shell.. Any help appreciated thanks. Happy new year!
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Hi, I've got a bit of a collection of large blocks from the Aust bone bed and not sure I'm doing the best job prepping them. So far I've been breaking them with a hammer and then acid prepping anything interesting I find with vinegar. The bones are usually fragments because they break when splitting the blocks. How is this material best approached, can anyone give some advice please?
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Picked this up a while back at Aust in Gloucetershire, UK. It was free but amongst chunks of the bone bed which are full of coprolites with a similar black completion, it also has a smaller piece of coprolite squashed into the side of it. What do you think, is that a big poo?? Found icthyosaur vertebrae very close by too.
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Hello, I've had a bit of difficulty getting a possibility of what this bone could have come from. It seems far too large to be from Pachystropheus rhaeticus so could Plesiosaur or Ichthyosaur be a possibility? The bone is broken off around the back. There's quite a lot of other things aside from the bone, which I think some of include a small tooth from Birgeria acuminatus as well as one from Lissodus minimus and a scale which looks like those of Gyrolepis albertii. Thank you
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Hello, I collected this piece a while ago from Aust Cliff, UK. The rock is from the Rhaetian, and Severnichthys teeth are quite common from here. I was wondering if perhaps this tooth could be a small Plesiosaur tooth, or Severnichthys? This measures about 3-4mm. There's also this tooth which I was thinking could be from Hybodus? It measures about 3mm across. Lastly, these four larger teeth, each measuring about 7-8mm. I haven't been able to find any close matches for these. There's also some coprolites, bone fragments and what I think is the scale of Gyrolepis albertii elsewhere on the piece. Thank you
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Spiny bivalve from Upper Triassic limestone at Aust Cliff, Gloucestershire, UK
Georyx posted a topic in Fossil ID
Hi everyone, First time posting here so please forgive any dodgy formatting. I found this bivalve shell in the Upper Triassic limestone beds at Aust Cliff, Gloucestershire, UK. I posted this on Reddit and only one person managed to have a guess at a Ctenostreon bivalve genus, but they are not sure. The spines on the edge of the shell seem a bit too evenly-spaced out in my opinion. (By the way, the grooves surrounding the shell are from where I've engraved the fossil a little. I don't have the equipment to fully extract it, so I have no idea what the outside of the shell looks like). Thanks all - any help would be appreciated. - Georyx -
Hi, I was wondering if this could be a Pachystropheus bone? Although it is damaged, it looks similar to pictures of Pachystropheus femurs, could it be a femur? It measures 4.5cm. There's a tooth next to it, the closest possiblity I could find was Ichthyosaur, but I couldn't find anything that similar, so could this be an Ichthyosaur tooth? On the other side, there's some other things. I think the larger tooth could possibly be Severnichthys, and one slightly lower down to be Lissodus minimus I'd appreciate any help, Many thanks
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Hi, Thank you all for the help with my shark spine I.d yesterday. I was very pleased to finally find our what it was! Today I was looking over some other large pieces of bone bed from the same trip to Aust cliff, and I had a very pleasant surprised when I broke it open. I think it's some sort of tooth, it's large around 5cm in length. Is it from a shark as it was near to the area I found the spine? Any help would be appreciated. Many thanks
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Hi, I'm very new to this and have had a couple of trips to Aust cliff uk recently. I hadn't really found much but today I found this tooth/bone? I have tried a little of my own research and have hit a dead end. I think it may be ichthysaur but I'm not sure if it's a bone or a rather long thin tooth. It appears to be hollow.Could anyone help me with an I.D please? Many thanks 20210921_213640.heic 20210921_213649.heic 20210921_214010.heic
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Could someone please ID this tooth and jaw section from Aust Cliff? The tooth is 2cm and Aust is triassic for those who don’t know. positive and negative
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Hi, I found this bone at Aust cliff (late Triassic), I know that most bones from Aust are likely Plesiosaur or Ichthyosaur, but are often unidentifiable. Is it possible to identify this bone? It seems to have split around the back, so could probably be only half of the bone, and it looks to be the end of a bone. I've ordered a book on Rhaetian fossils, so hopefully that will make things easier. It measures about 8 cm across. Unfortunately I do not have anything with me to prepare it. Many thanks.
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Hi, I've found a few things looking back at my Aust cliff material. This here somewhat resembles a tooth or claw in shape. I'd appreciate if anyone could tell me what it is? Found at Aust cliff, UK. It's 6mm long. Many thanks.
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Picked this big chunk of fresh rhaetic bone bed up today. It was twice the size when I found it but I was a butter fingers and dropped it accidentally and the other half disintegrated. Doh. Its a nice early Christmas present. If you look carefully, there’s a whopper of a plesiosaur vert in there. I’ll post some more pictures when I start digging into it.
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Hi I took only my second trip out fossil hunting over the weekend and found what to me are some great finds. Any help with ID would be greatly appreciated, i believe the vertebrae to be a pretty good example of an ichthyosaur vertebrae but other than that i am pretty clueless. These were all found at Aust Cliffs near Bristol in the UK.
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Hi, i found this at Aust cliff. I'd appreciate if any information about this could be shared. It crumbles quite easily. Many thanks.
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Hi, I am thinking this could possibly be a Pachystropheus centrum or neural arch. Could I be correct? It's from Aust cliffs, UK. The longest side is exactly 2cm long. Many thanks.