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  1. Recent finds from my new year day adventure. Found these two teeth within 2 feet of one another. One I am confident in saying is a Mosasaur but the tooth on the right I need some help with! If anyone can shed some light it would be appreciated! Thanks
  2. Here’s a vertebra fragment I found in Cretaceous Black Creek group sediments of North Carolina. It’s not turtle, and it doesn’t look like any crocodile vertebra I’ve ever seen. That would leave mosasaur, plesiosaur, or dinosaur. Personally I think it’s mosasaur, but I could be wrong and it may not even possible to ID further. Any thoughts?
  3. Not sure if this goes here or in Fossil ID but I’ll post here… This is one of my latest online purchases, and one I had to snag because if this is what it’s supposed to be it’s a neat piece. But seeing as I can’t personally verify it myself, I thought I’d post here. This vertebra was being sold as Trinacromerum sp. While I doubt that just a centrum like this is identifiable down to genus, I would like to know whether or not this really is a Polycotilid vertebra. I think it’s likely because it’s a very sizable bone that’s not mosasaur, but just want to check. This fossil is, according to the seller, from the Niobrara Chalk of Kansas. And as can be seen, this fossils as pretty obviously been flattened by geology. Thanks!
  4. Hi all, A couple of years ago I acquired a lovely pair of plesiosaur propodial bones from Lyme Regis. It was a matched pair of both humerus and femur. Today, when I was looking to make space in my cabinet for a new acquisition I had made, I discovered some odd dust next to the humerus that, on inspection and to my horror turned out to be pyrite bloom! I immediately removed the specimen from the cabinet, checked the other podial and nearby fossils, and used a tooth brush to brush of the most direct traces of pyrite decay. But the question is: what now? How do I ensure the propodial's preservation, and make it safe for display again. Should I store affected piece in an open or closed container? I suspect the latter, together with silica beads to consume any excess moisture might be best right now. But how do I get to the point where I can take it out again? Any suggestions are welcome. From my own thread on this topic I know of the existence of pyrite stopper, which sounds ideal for this situation. But I've also been warned that this is quite a hazardous solution and am therefore afraid of trying this out myself. So, part of the question would be whether someone offers pyrite treatment as a service, of knows of someone who does. Thanks in advance for your help! @Ptychodus04 @DanJeavs @paulgdls @RuMert and others
  5. fossil_lover_2277

    North Carolina plesiosaur or shark vertebra?

    I just recently found this bone in the Cretaceous Black Creek group deposits of eastern North Carolina. I originally thought it was an oddly shaped shark vertebra, but now I think it might be a worn plesiosaur vert. based on the images I looked up online. The overall cross sectional shape is elliptical, and the center looks much too thick for shark (doesn’t pinch in towards the center). Any thoughts? Thanks!
  6. RobFallen

    Plesiosaur Tooth

    From the album: Robs Fossil Collection

    Lower Cretaceous Plesiosaur Tooth from Russia A very nice, well detailed tooth from this Cretaceous species of plesiosaurus Found:- Seversk Sandstone, Upper Albian, Lower Cretaceous, Stariy-Oskol, Belgorod Gebiet, Kursk, Russia Age:- 100 Million Years Old. Size = 2.2 cm long
  7. Hi, I have this tooth from the Akrabou Formation in Morocco, and I was told it is a Plesiosaur tooth most likely belonging to the genus Libonectes (An Elasmosaur). I just wanted to get an opinion if the id is correct or whether it could belong to something else like a Polycotylid. The tooth is just over 3cm in length. Thank you!
  8. RobFallen

    Plesiosaur Tooth

    From the album: Robs Fossil Collection

    A Plesiosaur tooth from Khouribga, Morocco. Features a couple of repairs. Size: 1.69 inches Age: 65-70 million years Locality: Khouribga, Morocco
  9. Hi, any thoughts on this, from Lyme Regis? It is sold as Plesiosaur, but does anyone know if that is accurrate or if it is ichthyosaur? Thanks
  10. I have been thinking of buying this Plesiosaur tooth but I want to be sure its real and in well condition. Its from the Asfla Goulmima in Morocco. Turonian. Seller says its libonectes morgani.
  11. Hi all My kids and I found this tooth a while ago from the North Sulphur River in Texas. We can't figure out its ID and would appreciate any help. There is no carina; however, there are deep groves at the base. It appears cylindrical. After looking at various images, I can't tell if this is from a fish or a marine reptile like at plesiosaur. Images are below; the scale is 1 mm between the smaller hashmarks. Again, thanks for any help! Bret
  12. LiamL

    Plesiosaur or Pliosaur?

    Hey fossil friends. I found this worn vertebra earlier in the year When forum member @DanJeavs prepared this for me it revealed a very rare find for the Whitby coast. It is either a Plesiosaur or Pliosaur backbone. Anybody know what the difference is?
  13. Hi all! In continuation of the previous reports. Less text, more pics Bits of scenery:
  14. pachy-pleuro-whatnot-odon

    Biritish Kimmeridgian plesiosaur tooth

    Hi all, I bought this Kimmeridgian plesiosaur tooth from the Faringdon sponge gravels a while back. It came identified as Colymbosaurus sp.. At that point, I simply accepted this identification, seeing as the teeth of Colymbosaurus (or, at least, what's suspected of being Colymbosaurus) were already known from the Etches Collection and I didn't really have the means to verify the ascription from online sources. Today, however, The Etches Collection posted a video on Kimmeridgian plesiosaurs on their YouTube-channel, which make it abundantly clear that my specimen doesn't correspond to Colymbosaurus (video referenced below, as is a photographic excerpt of the teeth). The teeth of Colymbosaurus are not only subtrihedral but gracile in shape, they also have very strong striations - much stronger than in my specimen and almost pliosaur-like. The striations on my specimen, on the other hand, are way more similar to those of the Oxford Clay Tricleidus seeleyi, with very fine striations all along the tooth, a round cross-sections and (obviously) without carinae (just to rule out marine crocodile). My question now is: can my tooth be identified as to species or even genus? Could it be that the temporal range of Tricleidus extended into the Kimmeridgian? Might this tooth belong to Kimmerosaurus? Steve mentions in his video that there are more plesiosaurs that remain to be described from the Kimmeridge Clay, so, with that in mind, should I just classify mine as "cf. Crypticlididae indet."? Any ideas and suggestions welcome, but will just also tag @paulgdls and @DE&i.
  15. Per Christian

    Pliosaur teeth? Moroccan

    Hi all, here are more pliosaur teeth questions from me.. these are from the Asfla Goulmima Morroco Cretaceouds turonien. I'm fairly certain the stubby one is pliosaur but seeing as I've been mistaken more than once, I'd like to ask here. I think the slender is plesiosaur, but again.. I'd like for people with more knowledge than me to pitch in
  16. Daniel Fischer

    Is Ichthyosaurus a Plesiosaur?

    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.
  17. Per Christian

    Pliosaur? From Morocco

    Here is a 7 cm long tooth, claimed to be pliosaur. What do people here think? It's from Morocco, unsure where specifically. @pachy-pleuro-whatnot-odon
  18. Anomotodon

    Weird Cretaceous vertebrates

    Hi everyone! Found these two specimens in the Upper Albian Burim formation in Ukraine. Would appreciate any help with ID! 1. So this 1.2 cm tooth is as basic as they get - no carinae, no enamel ornamentation (enamel is there by the way), circular cross section and this really weird apical twist. When I found it in the sieve I thought it was a Polycotylid plesiosaur, but lack of striations is not typical of plesiosaurs. Can't find a large fish without carinae either (Icthyodectids, Enchodontids, Protosphyraena, Pachyrhizodus and other pachycormids all have carinae), although enamel is quite thick and definitely looks more reptilian. Crocs also have carinae. Apparently, Ctenochasmatid pterosaurs can have all of these features, but this tooth is quite robust for a pterosaur. I am confused... For comparison, other stuff from this locality left to right: Icthyodectid, Protosphyraena, Enchodus, Platypterygiine ichthyosaur, Polycotylid, Elasmosaurid tooth tip and Ornitocheiroid pterosaur 2. Well, for this one I am pretty sure it is a teleost of some kind. At first I thought it is a very worn tooth in a jaw section, but the overall shape is inconsistent with fish jaw bones. It seems relatively complete, so it would be great if there is anything diagnostic. (6 cm) @pachy-pleuro-whatnot-odon @Mike from North Queensland @ anyone else
  19. Per Christian

    Plesiosaur or pliosaur?

    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
  20. 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..
  21. RuMert

    Phalange

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