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Showing results for tags 'lance formation'.
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Hello everyone, Any thoughts on this Tyrannosaur tooth? It is just over 1 inch long, from Lance Formation, Weston County, Wyoming. It is one I bought years ago -- labelled as Albertosaurus, but given the formation, clearly not. But is it a Nano or a Rexy? cheers
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Hello fellow fossil hunters, I have a bit of a problematic guess here. I have a bone from the Lance Formation of Wyoming and need some help IDing it. It seems to resemble something like a crocodile coracoid, but not as spot on as I hoped it would. If you have any suggestions I would be glad to here them. Appreciate the help and if you have identified my mystery bone, please send sources to how you know what bone it is. Never will pass an opportunity to learn. Thank you.
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Described soft shell turtles in the lance formation
Fossil Collect posted a topic in Questions & Answers
Hello, does anyone know some of the described soft shell turtles from the Lance Formation? Or a paper of some of the turtles. I am interested in a soft shell turtle from the Lance so any help is appreciated. Thanks. -
Troodontids certainly are one of my favorite dinosaur families. Intelligent and what a set of chompers to eat you with, all you can ask for in a cool dinosaur. Will start this with the Pectinodon teeth in my collection and will continue to add as I take photos. This species has some of the coolest teeth. Pectinodon bakkeri is the only named Troodontid in the Hell Creek and Lance Formations. This is a tooth taxon and its teeth are significantly much smaller than its big cousin Troodon formosus. Lance Formation Hell Creek
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My Jurassic Park - Birds/Ptero/Unknown Hell Creek & Lance Formations
Troodon posted a topic in Member Collections
Bird and Pterosaur material is extremely rare in the Hell Creek and Lance Formations. Over the years I've purchased and found a few bones that I believe fit this category but not certain. Some may be mammal or reptilian. I'm not a bird guy so if you see something that does not seem right please let me know. Not a lot is published so I'm always open to learning. I showed this to a well respected theropod paleontologist and the potential ID's were his thoughts- 37 replies
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- hell creek formation
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Hi everyone! I have my eye on this piece that is claimed to be a belly rib from a T-Rex from the Lance Formation of Niobara County Wyoming. The seller claims it's robustness positively ids it as rex, but seems to have forgotten to list exact measurements, which I have contacted him about and am awaiting a response which I will post as soon as I get it. Even then, always good to double check these things! Any insight is greatly appreciated as always!
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Edited 3/11/23 to better reflect current info. I've recently gotten interested into the turtles of the Hell Creek and Lance formations and decided to compile what I've gathered onto here. It's amazing to see how many different species have been described from these deposits. I've also tried to attach links to papers that talk about these turtles (at about 22 species!). If I've gotten anything wrong or missed anything please let me know! Adocidae: Adocus sp. (part30043.pdf) listed as being present Baenidae: (https://www.researchgate.net/publicatio
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10.5mmx5mm
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Hello! As I've gone through what I've collected this past summer, I'm finding really interesting things that I took home with me. These come from Niobrara County in Wyoming. I've taken pics of various angles of the fossils. Scale bar has inches (top) and cm (bottom). I'm not completely sure what some of these pieces are so any ideas or suggestions would be helpful. Thanks in advance! Set 1: Vertebral Process Is it possible to ID a process this broken up? I'm thinking it's Edmonto but really holding out for Triceratops Set 2: Triangular bone A friend sug
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There are two Tyrannosaurs described in the Hell Creek & Lance Formations, Tyrannosaurus rex and Nanotyrannus lancensis. Teeth from these animals are the number one sought after and coveted item by collectors. I don't understand all the hoopla and prices they command since my friends who I collect with know that I'm not a tooth person and prefer bones and claws. However I've been fortunate to find and acquire a few teeth and will post a several of my nicer ones. My two most favorite T-rex teeth are my biggest and smallest: The Baby (one of the rarest teeth around) is 1 1/8" and w
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Identification Tyrannosaurid Teeth From North America
Troodon posted a topic in General Fossil Discussion
Updated Nov 25, 2022 Collectors, online sellers and some dealers periodically ask me to help them in the identification of tyrannosaur type teeth. So I thought I would put together a guide from Western North America (US/Canada) to help in identification. The following is the current understanding of those Tyrannosaurids described/known with the stratigraphic unit where they are found. If I missed any let me know. Albertosaurus sarcophagus : Horseshoe Canyon Formation cf Albertosaurus indet: Wapiti Formation Gorgosaurus libratu- 85 replies
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Consolidated all my informational Topics to make it easier to reference. Will keep updating since some of the reference material is outdated. Have to thank @PFOOLEY for suggesting this consolidation and it makes it a lot easier for me to access these topics as well as our members to know what's out there. General Tips in Buying Theropod Teeth Dinosaur Anatomy 101 Stratigraphy of the Late Cretaceous in North America Best Books for Dinosaur Identification Rare Theropod Teeth (World Wide) Identification o
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Dinosaur & Croc Faunal List of the Hell Creek and Lance Formations
Troodon posted a topic in Questions & Answers
Edited (04/14/23) With all of the new discoveries over the past few years there is very little out there that is current or accurate. Here is my view of the Dinosaurian/Crocodilian fauna from the Hell Creek and Lance Formation excluding Avialae. Tyrannosauridae: - Tyrannosaurus rex (Osborn 1905) - Nanotyrannus lancensis (Bakker et al. 1988) - Aublysodon mirandus (Not Valid) Alverezauridae: - Trierarhunchus prairiensis (Fowler et al. 2020) Ornithomimidae: - Struthiomimus sedens? (Marsh 1982) - Ornithomimus velox- 33 replies
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Identifying Theropod Teeth from the Hell Creek/Lance Fm
Troodon posted a topic in General Fossil Discussion
Updated March 29, 2023 Changed information on Avisaurus archibaldi A few years ago most of the smaller theropod teeth from the Hell Creek/Lance Formations were identified based on teeth from the Campanian assemblages of North America. Over the past couple of years new discoveries have shed new light on the theropods of the end of the cretaceous and new species have been described. I have addressed these on separate topics but decided to put all of these together to get a better view of the current picture of the upper Hell Creek and Lance formations. If you see any omissions- 18 replies
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Updated 1/17/20 I've taken a pretty firm position on the validity of Nanotyrannus ever since I spent some time looking at the Dueling Dinosaurs shortly after they were discovered. Subsequent to that, new information that I've become aware of just cemented my position. I'm interested in understanding the "truth" and have no problem looking at all available specimens that are in private hands or museums. The optics are very clear to me and I have difficulty understanding the debate. Collectors need to form their own opinion on this but I would like to share with you why I beli
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- lance formation
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I was able to dig in the Lance Formation last summer and finally got the chance to look at this find more closely. I don't think this is a dinosaur fossil and I'm not familiar with the skeletal anatomy of the other vertebrates at the site. Anyone know what it is? I tried taking all the relevant angles. This one came from Niobrara County in Wyoming if that helps.
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Need some help from our plant experts. This is a 3D trunk cast that I found in the Lance Formation. There’s plenty online regarding leaves, but I couldn’t find anything regarding trunk identification. Thanks!
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From the album: Hell Creek / Lance Formations
Meniscoessus was a large multituberculate mammal (large by Cretaceous standards), identified by the crescent-shaped/grooved cusps. Looks like a right M2 (right 2nd lower molar). -
From the album: Hell Creek / Lance Formations
For most collectors, it's more affordable to have a piece of a T. rex tooth if you just want it represented. This one is clearly T. rex: it's theropod with serrations (this one has the basalmost portion of the mesial carina), very thick, and clearly would've had a large circumference. Note also the large angle made by the curvature of the tooth at the carina (not Nanotyrannus which have narrow, blade-like teeth). -
These are multituberculate teeth found in the lance formation, I have yet to identify all of them and would like some insight. I have to post these in groups because there are so many but I can share the animals I think show the closest resemblance.
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These are photos of an unidentified tooth from the lance formation in Wyoming, it was put in a group of mammal teeth all approximately in the range of 2-4 mm in size. Among the teeth two of them have been identified as shark, one is a Lissodus and the other is unknown as of now. If there are any ideas as to what this tooth could be please do share.
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While looking through my Lance Formation matrix, I'd found this strange bone that looks like it might be a toe bone. Here are the pictures. The scale is in millimeters and the specimen is from Weston county, Wyoming. Thanks for any help.
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The title says it all. It’s a nice tooth, but I’m going back and forth on it because the telltale wear patterns for either group are not present as far as I can see. I apologize for the poor quality of my camera phone picture.
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Hi, I am interested in this tooth, and wondering if someone can narrow it down further. It is theropod tooth, from Weston County, Wyoming, Lance Formation. Waiting to hear back from seller on exact measurement, but included a photo of it near a tape measure. Thanks
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I’ve had this piece of a mystery bone, I think it may be an ungual, from the Lance Formation for a while now but haven’t been able to identify it. Finally decided to post it here and see if I can get an opinion. Any help is appreciated!
