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Showing results for tags 'gyrosteus'.
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Going over some old finds... When I found this I picked it up as it reminded me of the Gyrosteus (large Jurassic fish) bone that I once found nearby. Quick to put me down my daughter quickly dismissed it as ‘just wood’ but I’m not so sure. Could it be bone of either fish or reptile? thanks for looking
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Ever wondered what a sturgeon fin looks like cut down the middle and polished? This is from a large fish called Gyrosteus mirabilis that swam in the seas near whitby all them years ago. i think it’s the cartilage. As found Cut straight down the middle, showing the pyrite too.
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Hi all, I recently found this massive bowling ball sized rock at Saltwick Bay near Whitby on the Yorkshire coast (Northern England). It is lower to middle Jurassic, i think about 180-170 million years old (possibly the Whitby Mudstone Formation). As you can see it it's full of various bones, which occur on almost all sides of the rock so they are probably running right through it. Prep for this one is going to be a nightmare i can tell and i don't have the right tools, but for now i really just want to try and figure out what i've got. I think it's fair to assume the bones are associated. The options for this bit of coast are fish (Gyrosteus), ichthyosaur, marine crocodile, plesiosaur or dinosaur. I was hoping based on the cross sectional shapes of some of the bones, and the texture of the bone itself, someone would be able to narrow down what it might be. Fish or reptile would be the first thing to determine. My obvious first assumption was marine reptile, but some of the fish on the Yorkshire coast like Gyrosteus are also huge (5m long) and i'm not very familiar with their bone structure. In this picture, i thought the rectangular bone towards the bottom might be a vertebra in cross-section. If so, from what? Could it be the edge of an ichthyosaur vertebra before it dips down in the centre? This bone is the biggest in the block, about 8 cm long and 3 cm thick. Continued in the next post!
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- bone block
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