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Showing results for tags 'Russia'.
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Fossil marine vertebrates from the Upper Cretaceous of Akkermanovka
Praefectus posted a topic in Fossil News
Fossil marine vertebrates (Chondrichthyes, Actinopterygii, Reptilia) from the Upper Cretaceous of Akkermanovka (Orenburg Oblast, Southern Urals, Russia) Jambura et al., 2023 https://www.sciencedirect.com/science/article/pii/S0195667123003075?via%3Dihub Tylosaur (top), Polycotylid (middle), and Plesiosaur indet. teeth from the southern Urals.
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Hi all! As winter is getting nearer I tried to catch the last glimpses of summer and went for a one-day trip to the Volga river, taking advantage of unusually low water level and a good weather forecast combination. And I wasn't disappointed with scenery and finds, which I'd like to share with you. Last warm days of November before snow cover:
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- jurassic
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Liopleurodon tooth? Early Tithonian, Volga beds, Moscow basin, Russia.
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- liopleurodon
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Eboraciceras from Russia (I don't know the species) I don't know why it has this hole in the conch. I may have an idea but I want to be sure
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Worms Revived After 46,000 Years Frozen in Siberian Permafrost
Oxytropidoceras posted a topic in Fossil News
A worm that survived 46,000 years in permafrost wows scientists Emma Bowman, NPR radio, July 30, 2023 Nematode resurrected from Siberian permafrost lay dormant for 46,000 years By Sascha Pare, LiveScience, July 27, 2023 Worms Revived After 46,000 Years Frozen in Siberian Permafrost Scientists want to understand how the worms survived in extreme conditions for extraordinarily long periods of time. By Orlando Mayorquin, New York Times, July 29, 2023 The open access paper is: Shatilovich, A., Gade, V.R., Pippel, M., Hoffmeyer, T.T., Tchesunov, A.V., Stevens, L., Winkler, S., Hughes, G.M., Traikov, S., Hiller, M. and Rivkina, E., 2022. A novel nematode species from the Siberian permafrost shares adaptive mechanisms for cryptobiotic survival with C. elegans dauer larva. PLOS Genectics. 19(7): e1010798 biorxiv.org preprint Peer review history Yours, Paul H.- 2 replies
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- arctic
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From the album: Triassic ammonites
Rare russian ammonit from lower triassic (Skythian) of Sibiria, Russia. Diameter approx. 4 cm -
From the album: Triassic ammonites
3 nice Dinarites asiaticus from an old collection, coming from Mangyshlak in Kazachstan. Each one has approx. 3 - 4 cm, lower triassic, upper skythium T1 -
The locality of this tooth that the seller listed is the STariv Oskol, Belgrad Region of Russia. Is this a pliosaur tooth or a Polycotylid tooth? Some Russian fossil dealers often mistakenly identify Polycotylid teeth as pliosaur. Any thoughts?
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Peltoceras sp. Upper Callovian. Volga River, Sarátov (Russsia)
phylloceras posted a gallery image in Member Collections
From the album: Ammonites of the Betic Ranges (Spain) and world
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Peltoceras sp. Upper Callovian. Volga River, Sarátov (Russsia)
phylloceras posted a gallery image in Member Collections
From the album: Ammonites of the Betic Ranges (Spain) and world
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Questions about any large and currently unnamed Ctenacanthiformes sharks known
Joseph Fossil posted a topic in Questions & Answers
As I have been researching large ctenacanthiform sharks from North America, I've been wondering if there are any known globally that are currently unnamed. I definitely know of the large Ctenacanthiformes Saivodus stratus (found in both what is now North America and Great Britain), the large Ctenacanthiform from the Permian Kaibab formation in Arizona, and the 'Texas supershark' (a likely large species of Gilkmanius) from the Pennsylvanian Texas Graham formation (all three as larger or larger than an adult Great White Shark (Carcharodon carcharias)). But are there any large ctenacanthiformes (at least in size comparable to a modern day adult Great white shark (Carcharodon carcharias)) currently unnamed that are also known? Ctenacanthiformes are known from North America, Greenland, Europe, Asia, and South America. https://www.mindat.org/taxon-P34476.html Even though study of Ctenacanthiformes as a whole is just starting to become more through within the past few decades, I'm wondering if anyone on the forum is aware of any currently unnamed Ctenacanthiform fossils from areas outside of North America of Great White Shark (Carcharodon carcharias)) size? -
Came across this tooth, the location is: Severst Sandstone Formation Volga River Region, Russia Late Jurassic 145 Mya. The striations tells me it's ichthyosaur, but the root looks pliosaur to me, do I'm curious. What do people here think? It's 34 mm long @pachy-pleuro-whatnot-odon
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Australiceras/Proaustraliceras Ammonite?
Mochaccino posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hello, I came across this listing for a Australiceras/Proaustraliceras ammonite from the Cretaceous Volga River of Russia, about 12 inches long. In terms of restoration, it is just said to be "cleaned, prepped and stabilized". To my amateur eye, there are no suspicious spots or abrupt changes in texture that would indicate reconstruction/restoration or compositing, and I think the matrix also looks typical of the region. What do you think? Any tampering going on or is it all-natural? Thanks. EDIT: I actually noticed there is some change in texture in this part. Not sure if it's shell loss or possible reconstruction, I might ask for more photos
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First of all - sorry for bad and rude language)) So, I need some help with identification of this teeth. All was found in Russia, Trans-Urals region, in a few different rivers: Belyakova, Sugatka and Derney. There must be Eocene period, probably lutet or barton layer, but I can't be sure, because there is no bedrock, only fossils that river stream brings. Sometimes me and other people found there more old fossils, back to cretaceous even. I showed this photo to few reptile specialists from Saint Petersburg, but they sure that is no crocodile teeth, and insist that is a fish teeth. But i have fish teeth from this region, and they looks different. There we can found Palaeocybium, Scomberomorus, Eutrichiurides and even Sphyraenodus species teeth, and all they looks like different to this teeth. So, what is it? Some new fish species, crocodile of some another reptile?
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Can anyone help me identifying these ammonites. They are from Russia, Lopsia River
Joseh posted a topic in Fossil ID
Can anyone help me identifying these ammonites. They are from Russia, Lopsia River, West Siberia. Diameter approx. 30 cm (12 inches). Thanks in advance,
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I picked up the shark tooth below a while back, labeled as Cretalamna borealis. I'm not very familiar with the species--does this ID appear to be correct? The label that came with the tooth says it was found near Stary Oskol, Belgograd Oblast, Russia, and that it's Upper Albian in age from the Kursk Osteolite member of the Seversk Sandstone formation. The tooth measures 38.6 mm along the slant. One of the root corners is missing and there's some hard matrix still cemented to the tooth near the root margin of the lingual side. @ThePhysicist, I think this one might be a Dwardius woodwardi or Dwardius sp., but I'm not sure.
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From the album: My collection in progress
Lithobiidae unidentified sp. Newport 1844 Location: Sambian Peninsula, Kaliningrad Oblast, Russia Age: 56-34 Mya (Eocene, Paleogene) Measurements: 1,9x1,1 cm (amber), 1,1 cm (length of centipede) Kingdom: Animalia Phylum: Arthropoda Subphylum: Myriapoda Class: Chilopoda Order: Lithobiomorpha Family: Lithobiidae -
Is the unusual ammonite Eogaudryceras sp.?I have never seen it before, its shape is special Thanks a lot.
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Chimaerid dorsal spine from Russia
Jurassicz1 posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hello! I found this for sale. A dorsal fin spine from a Chimaerid. From the Severesk sandstone, Stary Oskol, Russia. Cretaceous. Albian. Is it real? Regards.
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Hello, I'd love some identification help on this lil ammonite fossil I purchased at the Tucson Gem Show. The dealers were Russian and all the info I could get was that the ammonites were Russian as well It is a bit pyritized. I bought 2, I used the larger one to make a mold and cast. The original did not survive the process so I have included pics of the cast (the one with the loop added, lol), I think it's easier to see details on that as well. Additionally, if you have any rec's for online or in print resources for ammonite ID they would be much appreciated. I found myself googling around in circles trying to find info to ID this myself. Thanks in advance, Maranda
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This Fossil Bug Discovered in Baltic Amber Looks Remarkably Like a Mantis. David Nield, Science Alert, March 27, 2022 The open acess paper is: Baranov, V., Pérez-de la Fuente, R., Engel, M.S., Hammel, J.U., Kiesmüller, C., Hörnig, M.K., Pazinato, P.G., Stahlecker, C., Haug, C. and Haug, J.T., 2022. The first adult mantis lacewing from Baltic amber, with an evaluation of the post-Cretaceous loss of morphological diversity of raptorial appendages in Mantispidae. Fossil Record, 25(1). Yours, Paul H.
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Mammoths and other large animals survived in the north much longer than previously believed. New DNA research indicates that the climate, not humans, led to the demise of these large creatures, Norway Science, January, 2022 The open access paper is: Wang, Y., Pedersen, M.W., Alsos, I.G., De Sanctis, B., Racimo, F., Prohaska, A., Coissac, E., Owens, H.L., Merkel, M.K.F., Fernandez-Guerra, A. and Rouillard, A.,2021. Late Quaternary dynamics of Arctic biota from ancient environmental genomics. Nature, 600(7887), pp.86-92. It concludes that mammoths survived in continental northeast Siberia until 7,300 BP; North America until 8,600 BP; and the Taimyr Peninsula as late as 3,900 BP. Yours, Paul H.
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Hello, I found this shark tooth online. It was found in Russia. Seller says it's an anomotodon sp. Is it? The age is Cenomanian, Upper Cretaceous
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