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Showing results for tags 'theropod'.
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Hello, this spring break I found this vertebra in late Campanian sediments from southern Coahuila, Mexico. It comes from the Late Campanian, Cerró del Pueblo Formation, around 73-71 million years. This was found along with marine and terrestrial fossils. It is about 1 cm long (3/8) of an inch, 1 cm in width, and 1.1 cm in height. I want to know what type of dinosaur this vertebra belonged to and whether it’s a caudal vertebra or not. My thoughts on this specimen at the moment, is that it’s probably a caudal (tail) vertebra from a small theropod dinosaur, something like a dromeosaur or a troodontid. I hope some dinosaur experts on this forum can give me more insight on this small vertebra.. Side view Other side Front view Bottom Top view
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- cerró del pueblo
- coahuila
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Here are a couple of dinosaur teeth (tyrannosauroid and hadrosaurid) from Bladen County, North Carolina.
- 40 replies
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- 13
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- appalachiosaurus
- cretaceous
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Hi I’m wondering what Ceratosaurus and other horned Theropods used there horns for? I’ve heard it was display but I’ve also heard it was for pushing rivals. Is there any evidence for these? Thank you!!
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I have a theropod tooth that has hard rock matrix attached to base. What is the best technique to remove it safely? Thanks in advance.
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Hi, I saw this tooth for sale and i am wondering if it looks like it could be a Ceratosaurus tooth. I read something about Ceratosaurus teeth having vertical ridges on the inner crown so i think it could possibly be a good match. It is .75 inches long and comes from the Morrison Formation in Wyoming. Thanks.
- 6 replies
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- 1
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- certatosaurus
- morrison formation
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Hello Everyone, I have had this beautiful Argentine theropod tooth for 18 months now and the previous owner 25-30 years before the ban was introduced. The locality information is a bit flakey, however I thought it would be worth a try to get some kind of ID if possible if there are any Argentine friends out there with some information to hand. I have taken some measurements as follows: Distal - 12 per 5mm Mesial - 12 per 5mm MCL - 18mm MCW - 10mm crown height - 39mm If any further measurements are needed let me know Thanks!
- 23 replies
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- 4
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- argentina
- carnotaurus
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Theropod Metatarsal ID request Verification
TyBoy posted a topic in Is It Real? How to Recognize Fossil Fabrications
Looking for confirmation on this theropod bone being sold. Seller is identifying it as a theropod (Anzu?) Arctometatarsal from the Hell Creek of Montana, Powder River County.. 10.4" Long. They indicate it cannot definitely provide an ID but the giant raptor Anzu Wylie is a likely candidate be cause other material from this theropod has been found at the quarry. What is a Arctometatarsal?
- 2 replies
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- anzu wyliei
- hell creek formation
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Thought I would share some of my Acrocanthosaurus tracks in my collection from Texas. These are from the Glen Rose Formation. Anyone who has dino tracks, please feel free to post them here on this thread too...would love to see them! The associated pair are big...both over 20 inches long.
- 26 replies
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- 14
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- acrocanthosaurus
- early cretaceous
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Just bought this vertebra. Small thing, just about 4,5 cm in length. Added a 1 euro coin for size reference. Obviously the spine on top and sides are gone. It was sold as a 'unidentified' theropod (caudal) from Ifezouane Formation, Kem Kem. I was wondering if people here could come to a better ID. I suspect it might just as well be crocodilian but to be honest: I'm fine with whatever it turns out to be. Didn't pay much for it anyway. So, is this: - a dinosaur or croc? - theropod - species (?) Would love to hear your opinions!
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Hi all, I posted this tooth for ID a while back. Conclusion was that it could be a Dakotaraptor, maybe, maybe. Since then I am going back and forth on the ID, basically on a daily basis So I decided to take more & new images, measure it thoroughly, put it up again, and kindly ask for your help. It was found in the Hell Creek Fm, Powder River Co., Montana. Measurements are: CH: 2.08cm CBL: 0.8cm CBW: 0.42cm Serration count per 5mm is mesial 24 and distal 18. What makes it hard for me to judge: the shape of denticles is between round and chisel (?), the tiny mesial denticles, and the position of the carinae. Lowest part of the mesial carina is sheared off, but I would not expect a twist - looking closely it would end either half way or 1/3 from base. Any help is highly appreciated!
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- dakotaraptor
- hell creek formation
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Hi, Is it possible to id this bone from the Kem Kem Beds in Morocco?. It is 15.8cm in length and I am thinking it is a possible theropod femur bone. Thanks.
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Next tooth up is a "unidentified theropod " tooth from the judith river formation in eastern MT....its CH 8 mm....it has 13 serrations per 3 mm on the posterior of the tooth and 16 per 3 mm on the anterior.......some of the pictures youll see what looks to be ribs on the side of the tooth, i thought zapsalis at first but i dont see the posterior as having a straight edge .....let me know what u all think after viewing the pics! @Troodon
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- dromaeosaur
- judith river formation
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It's nothing particularly exciting, but I just wanted to share what is possibly the prettiest looking Spinosauridae tooth I've ever seen. The enamel patterning on it is gorgeous, and very different to what I've come across on run-of-the-mill Spino teeth before. Both carinae and tip are also beautifully preserved. There is a pretty smooth enamel texture and no fluting, plus it's even sporting an offset, short mesial carina for an extra bit of personality. (51mm) Anyone else want to share their favourite colourful teeth?
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- 10
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- cretaceous
- enamel
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Genuine theropod dinosaur egg?
MohammadAAK posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hello all, I saw one seller online listing this piece for auction. I'm interested in bidding but the fact the seller is from Taiwan worries me. Other than that, the egg looks nice. Seller says it might be a small tyrannosaurus or large therapod egg. Locality is noted as "East Asia", which I assume is china. And the description says this is from an old Chinese collection exported in the 80s. Cretaceous of East Asia. Best wishes
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I know specimens from the Kem Kem are some of the most common things found on the market, but with so much undescribed material, it's a favourite location of mine for finding those fossils that are just a bit odd and often overlooked. So here are some of my theropod teeth from the locality to date, that don't quite fit the usual Spinosaurid & Carcharodontosaurid profiles: To start with, a theropod indet. tooth with a very unusual profile, and unique (for the locality) mesial carina that ends naturally above the midline.
- 35 replies
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- cretaceous
- kem kem
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Hi, does anyone know if theropod bones are completely hollow. I saw this for sale and was wondering whether it was theropod or just float because it wasn't fully hollow but had gaps and holes, the website wouldn't allow me to copy the image though.
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This next tooth i just recently purchased was sold to me as a probable dakotaraptor tooth. Its from the hell creek formation in Powder River Co. MT. Its CH is 18 1/2 mm....posterior serrations are 20 per 5 mm. Anterior serrations are 25 per 5 mm. @Troodon , @Andy, @fossilsonwheels
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Next up in my collection is this one that was sold to me as a possible saurornitholestes langstoni tooth. From the Judith River Formation in Wheatland Co. MT. CH is 9 mm. Serrations are 15 per 3 mm on the posterior of the tooth and 23 per 3 mm on the anterior of the tooth. @Troodon
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- dromaeosaur
- dromaeosaurus
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This next tooth in my collection was sold to me as " Unidentified Theropod ". It is from the Judith River Formation in Montana....its CH is 7 mm..its posterior serrations are 16 per 4 mm and its anterior serrations are 19 per 4 mm. what do you guys think it could be from???? @Troodon @fossilsonwheels
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Hey everyone! In this post im going to be sharing two teeth from my collection. The first one was sold to me as acheroraptor. Its from the Hell Creek formation in MT and its CH is 7 mm. @Troodon
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We starting switching up our displays for the different styles of Dinosaur programs we do. The formation displays are great but we wanted to try this style for the Dino report programs. I like how these are shaping up and they help the flow of the presentations. We can switch fossils between the different displays and this gives us some flexibility. The first one completed is the Ceratopsians. We have two different decent sized Trike frill pieces and various teeth from Hell Creek. The Leptoceratops tooth is from Lance Creek and we have two JRF teeth. From the Aguja, we have a frill piece. Lastly a toe bone and a small frill piece from Horseshoe Canyon. We use a 7” Hell Creek vert and a 3” vert from Horseshoe as touch fossils. The kids like seeing the various pieces of different Ceratopsians from different locations.
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- ankylosaur
- ceratopsian fossils
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Hey everyone this next tooth in my collection was sold to me as a possible Dromaeosaurus Albertensis from the judith river formation in Hill co Mt. Its size is 5/8"....CH is 16 mm, the anterior serrations are 9 per 2 mm and the posterior serrations are 8 per 2 mm.....again sorry for the finger placement in some of the pics...in trying to get the best shots i can for you all. @Troodon
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This next tooth was listed as a possible dakotaraptor steini...what do you guys think? Sorry for the finger placement in some of the pictures.....from the hell creek formation in powder river co. , MT. The size is 15/16 " and Serrations on the posterior of the tooth are 5 per mm and 10 per 2 mm. The anterior serrations look smaller and look to be about 6 per mm.... @Troodon
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Hi I found this online and am wondering if its a tooth?, or just a piece of opal. Its 2mm, and is from Lightning Ridge Australia. Thanks!!
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So this tooth i have was labeled by the seller as an Allosaurus premax tooth. The tooth is still in the matrix and the tip of it has broken off. The tooth measures 15/16 " long and is from the morrison formation ( bone cabin quarry ) in wyoming.
