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Showing results for tags 'ichthyosaur'.
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Recently I visited a clay pit near Mistelgau in Bavaria. It's a kinda famous quarry because of the "belemnite battle field". Huge plates with hundreds/thousands belemnites come from there. But you can also findother fossils like ammonites and also bones. I already was there a few times and I mainly found ammonites and of course belemnites. But this time I also found some bones in the area of the Belemnite battle field. They were just laying therebut it was kinda difficult to find them because they are round, Belemnites are round etc. so I more or less crawled through the quarry So here are two picture of the quarry: The typical ground there: Lots of belemnites, some ammonites and very rare other fossils like bones. I found two types of bones. Firstly Ichthyosaur paddle bones: Here is a picture of all the paddle bones I found (unprepped): Mostly they were kinda small but I was able to find a nice one with a length of 3 cm: And here is another detailed picture of a small one (1cm)
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Hi all! In continuation of the previous reports. Less text, more pics Bits of scenery:
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Ichthyosaur skull prep - saving a fossil that was poorly excavated
-Andy- posted a topic in Fossil Preparation
Sometime ago, I acquired an ichthyosaur skull that was poorly prepped. It had been roughly grinded and had lost much of its surface details. This is unlike the Holzmaden-style ichthyosaurs that were professionally prepped from the beginning, resulting in a beautiful fossil with scleral eye rings and full teeth etc. It's the reason collectors get unprepped Keichousaurus and send them to professional preppers, with the resultant Keichousaurus being more detailed than the ones you see from the Chinese market. This guy here is as flat as a pancake and so it would take delicate work to remove the hard matrix without damaging what bones still remain. Thankfully, @steelhead9 was up to the task of prepping him further. There is no restoration here. I'd say he has done one heck of a job.
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My 9 year old daughter’s collection had outgrown the old shelves so we took a trip to Ikea today to get something more suitable. Though I don’t think it’ll be long before this one is full too... From top to bottom; ‘Ice Age’ A mammoth tooth, couple of mammoth ribs and a few other bits Purchases A few things we’ve bought, including some fish, a nice display of pecten and a few teeth (plesiosaur, mosasaur, spino) North Yorkshire finds The best of our finds on the coast (excluding ammonites) including a lot of belemnites, bivalves and a couple of ichthyosaur verts Other purchases A potamon and a pea crab, a few trilobites and other bits and pieces Ammonites Nearly all found ourselves on the coast but a couple of purchases too. Local river finds Some rugose coral, crinoids, stigmaria and a few brachiopods Hoping to add plenty of interesting new fossils with a week on the Jurassic Coast in August
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Hello, I have a simple question but I can't find the answer and I think many of you probably know the answer. Is the taxon Ichthyosauria a part of the taxon Plesiosauria? I want to start learning more about Ichthyosauria and this fact simply bothers me not to know.
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Hi. I'm currently on holiday in Lyme Regis, Dorset, England and I have found this vertebrae on the beech. It's maybe 1.5cm in diameter. I believe it to be ichteosaur but I was wondering if anyone could clarify? Also, it appears to be missing a portion, would this likely have occurred pre or post fossilisation?
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Pliosaur tooth, or ophthalmosaurid ichthyosaur (Stary Oskol)
pachy-pleuro-whatnot-odon posted a topic in Fossil ID
Hi all, First off, this is not my fossil (though I own a large crow of similar morphology), but one I recently bumped into and found particularly curious. Why? Because it's morphology seems to contradict itself. Described as a Polyptychodon interuptus (no longer considered a valid genus; Madzia [2016]) from the Late Jurassic Volga Beds (?) of Stary Oskol, the tooth appears to have enamel folds consistent with what one might expect from an ophthalmosaurid ichthyosaur, such as Platypterygius sp.. The root, however, is smooth and round, with a hollow base, which, unlike the rectangular and "fibrous" roots more typical of ophthalmosaurid ichthyosaurs, is more indicative of pliosaur. Here are some pictures of the tooth. Unfortunately, as it was sold off by auction back in 2017, there's no chance of getting any better quality photographs: I know the seller is quite familiar with pliosaur teeth, so would be surprised if they identified the tooth wrongly. The ornamentation on the tooth, however, bugs me as not matching what I would expect for pliosaur, especially a brachauchenine species. Below are a schematics illustrating various tooth crown ornamentations amongst marine reptiles (figure 2 from McCurry et al. [2019]) and some examples of British brachauchenine pliosaur teeth (figures 3, 4, 5 and 6 from Madzia [2016]) for comparison. Tooth ornamentation in marine reptiles: A. Deinosuchus rugosus; B. Spinosaurus; C. Ichthyosaurus; D. Pliosauridae indet.; E. Globidens alabamensis; F. Hydrurga leptonyx; G. Mammalodontidae indet. Here's the only confirmed Stary Oskol pliosaur tooth I've been able to find as a reference for how the above translates to that location (source): And, finally, for completeness, some Stary Oskol platypterygiine ichthyosaur teeth: My questions to you are: Does this look like an ichthyosaur or pliosaur tooth to you, and why? I've heard, by word of mouth (i.e., got from a source that's not academic), that certain late ophthalmosaurid species developed root tooth roots. Can anybody confirm or deny this, if possible with academic reference? Thanks for your help! @RuMert @Anomotodon @paulgdls @PointyKnight @Mike from North Queensland @-Andy-_kiprijanoffi_rooted_tooth_with_tip_01.thumb.jpg.5859507dc57e27cd09f573faeb022a95.jpg)
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British marine reptile teeth, pliosaur? Ichthyosaur? Croc?
Per Christian posted a topic in Fossil ID
Hi everyone I came across this box of marine reptile teeth from: Age 200 million/Rhaetic bone bed. I don't have the measurements of the fossils unfortunately, but do anyone see plesiosaur and ichthyosaur teeth here? I'd love it if there's pliosaur but probably not..
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Marine Reptile Bone Collection from Lyme Regis and Charmouth (England)
Paleoworld-101 posted a topic in Member Collections
I've spent a fair amount of time now combing the beaches around Lyme Regis and Charmouth in Dorset, England, and thought i would put together a topic that presents all of my marine reptile bone finds (so far) in one place. The fossils here are Early Jurassic in age, approx. 195-190 million years old and come predominantly from the Blue Lias and Charmouth Mudstone formations. I first visited this area in 2013 with the simple goal of finding at least one ichthyosaur vertebra, and now after three subsequent trips in 2014, 2017 and 2019, i've put together a far better assortment of finds than i could have possibly hoped for! I think i have been quite lucky along this coastline, although it has taken many hours to amass this collection. Across all four of my England trips i have spent a total of 18 days looking for bones in the Lyme Regis area, most often on the stretch of beach between Lyme Regis and Charmouth but sometimes at Monmouth Beach as well. This coastline also produces a large quantity and diversity of ammonites, belemnites, crinoids, bivalves, brachiopods, gastropods, and even rare insects. However i've always been most interested in fossil vertebrates, and so the ichthyosaurs and plesiosaurs that are found here have been my primary target for collecting. There are also some impressive articulated fish to be found, but as yet i have had no luck in finding any! Ichthyosaur bones are the most common type of vertebrate fossil in the area, particularly their bi-concave vertebrae. Less commonly you can also find pieces of the jaw, sometimes with teeth. If you are extra lucky though you may also find plesiosaur bones, which for whatever reason are much rarer than those of ichthyosaurs. The best way to find any type of marine reptile bone around Lyme Regis is to closely examine the shingle on the beach, and i've spent seemingly countless hours bent over and slowly walking along the shore looking for them. If you have a bad back it's even more difficult! I've learnt that bones can be found pretty much anywhere on the beach: in the slumping clays, at the top of the beach in the 'high and dry' shingle, along the middle of the beach, at the low tide line, and also underwater amongst the rocky pools and ledges. And just when i start to think that the beach has already been heavily searched and there isn't much left to find, there always seems to be another bone that turns up, often lying in plain sight. The truth is that most people who visit here to collect are not experts and will probably walk past a lot of these bones, as the texture is the most important thing that gives them away and learning to recognise it takes a bit of time. For the sorts of articulated skeletons that sometimes make news headlines and are beautifully intact, searching the shingle is not the way to go, but for a short term visitor like me i think it is the best way of maximising the chances of finding any sort of reptile bone in the shortest amount of time (and something i can take back with me on the plane too!). Without further ado, here are the pics (spread across multiple posts due to file size limits). I've also included as-found pictures for some of these finds to provide a sense of what they look like and how they are found when they are on the beach. The collection so far. Starting first with my favourite Lyme Regis fossil, this is a very nice plesiosaur vertebra that is in great condition! A very rare find! I have been very fortunate to find two plesiosaur vertebrae at Lyme Regis so far, although this one is smaller and more beach-worn than the previous example. Continued below.
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Hi everyone I came across these teeth on our favorite site. It's listed as plesiosaur and ichthyosaur, but could the plesiosaur be a pliosaur tooth? The ridges are quite pronounced.. The teeth in this set were both found in the Seversk Sandstone in Belgorod, Kursk, Russia
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From the album: Moscow region Late Jurassic vertebrates
15 mm, Fili Park, Volgian-Nikitini zone- 1 comment
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- fili
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From the album: Moscow region Late Jurassic vertebrates
15 mm, Fili Park, Volgian-Nikitini zone-
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From the album: Moscow region Late Jurassic vertebrates
15 mm, Fili Park, Volgian-Nikitini zone-
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From the album: Late Jurassic ichthyosaurs from the Volga
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From the album: Late Jurassic ichthyosaurs from the Volga
cervical, anterior and posterior dorsal, anterior and posterior caudal, apical -
From the album: Late Jurassic ichthyosaurs from the Volga
4 neural arch facets -
From the album: Late Jurassic ichthyosaurs from the Volga
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From the album: Late Jurassic ichthyosaurs from the Volga
That's one heavy and pyritized ichthyosaur vertebra. Other examples on the right -
From the album: Late Jurassic ichthyosaurs from the Volga
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From the album: Late Jurassic ichthyosaurs from the Volga
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From the album: Late Jurassic ichthyosaurs from the Volga
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From the album: Late Jurassic ichthyosaurs from the Volga
Possible parietal bone (water-worn) -
From the album: Late Jurassic ichthyosaurs from the Volga
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From the album: Late Jurassic ichthyosaurs from the Volga
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From the album: Late Jurassic ichthyosaurs from the Volga
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