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Showing results for tags 'dinosaur'.
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Hi all, Here are some of the last from the mystery box from Weston co, WY, Lance fm. They look like a couple of herbivore teeth and a few carnivore teeth fragments to me. Possibly robust enough to have to come from T Rex, if so...? Thanks, 1a 1b 1c 1d 1e 1f 2a 2b 2c 2d 2e 2f 3a 3b 3c 3d 4a 4b 4c 4d 4e 4f 5a 5b 5c 5d
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Hi, after almost 2 years I have reworked my Archaeopteryx skeleton model also shown on this board: http://www.thefossilforum.com/index.php?/topic/110891-archaeopteryx-skeleton-model/ On the first version, I wasn't happy with the stability and the external metal support. Also, the dynamic pose made it large and difficult to find space for. So I decided to give the new version a more relaxed, upright posture and to run an iron rod through the spine instead of below it. I also reworked some details and found that the skull was scaled a bit too large compared to most specimens. Thanks to Scott Hartman the rib orientation was modified a bit, too. Here are a few pictures: The new version of the skeleton is much easier to print and to assemble. The files are now available for personal use at https://cults3d.com/de/modell-3d/verschiedene/full-size-archaeopteryx-skeleton though I recommend this only for printing on resin printers with a resolution of at least 50µm for the fine details. Best regards, Thorsten
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Hello all! Been researching for so long to try and figure out what kind of tooth this is when I came across your site. So here is my fossilized tooth, im not sure where the tooth was found (i’m in nevada, but could be from elsewhere), sorry for the little to no info but that’s all I have, if you guys have any more questions or anything of the sort, just reply to this thread and i’ll reply asap. Thank you!
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Hi all! I am relatively new to the forum as well as to collecting but I have put together a small collection of various specimens over the last year. This collection will keep growing and I will continue to post when I get new specimens. I have some more small specimens but for now I am only posting a selection of my collection. Enjoy! -Ben
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Hello everyone, I saw a Spinosaurus claw. I wonder if it has red flag? It looks natural
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Hi all. I recently bought this interesting little tooth from @pachy-pleuro-whatnot-odon. When he first bought it, it was labeled as a Deltadromeus agilis premax tooth. What Deltadromeus' teeth look like, no one knows, but I see why someone would ID this as a premax theropod tooth because of its triangular base and the mesial carina that looks quite theropodian. But to my knowledge, theropod premax teeth have their two carinae located on/towards the distal side, and there is no carina on the midline of the mesial side. What do you think? Is this a premax theropod tooth? Is it even dinosaurian, or could it be something else entirely (perhaps a pterosaur or other reptile)?
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From the album: Hell Creek / Lance Formations
One of my favorites as a kid - the archetypical Ankylosaurian - Ankylosaurus. Ankylosaurus teeth appear to be fairly uncommon in Hell Creek - some paleontologists have suggested that Ankylosaurus may have lived in the highlands or nearer the coast of Laramidia. Most "Ankylosaurus" teeth you see for sale are actually Nodosaurid (cf. Denversaurus), for whatever reason, they seem to be far more common. Ankylosaurus teeth also often have wear facets, as this one does. The denticles give their teeth a "leaf-like" appearance. Given their shorter stature, Ankylosaurians probably were low-browsers. This one was found by a rancher last year, and was rediscovered and prepped out of the matrix in October.- 1 comment
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- ankylosaur
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From the album: Hell Creek / Lance Formations
This kind of incisor-like ("incisorform") tooth was originally thought to have belonged to a large, Cretaceous mammal. Later discoveries revealed that these teeth were actually the front teeth ("premaxillary teeth") of Tyrannosaurs - and are now known as a hallmark of their clade, Tyrannosauroidea. Closely-spaced, parallel grooves on bones suggest that Tyrannosaurs used these teeth to scrape meat from bone. Given the size, this is from a very young animal. Should Nanotyrannus be valid, then this should be considered an indeterminate Tyrannosaurid. -
From the album: Hell Creek / Lance Formations
This kind of incisor-like ("incisorform") tooth was originally thought to have belonged to a large, Cretaceous mammal. Later discoveries revealed that these teeth were actually the front teeth ("premaxillary teeth") of Tyrannosaurs - and are now known as a hallmark of their clade, Tyrannosauroidea. Closely-spaced, parallel grooves on bones suggest that Tyrannosaurs used these teeth to scrape meat from bone. Given the size, this is from a juvenile animal (smaller than "Jane"). Should Nanotyrannus be valid, then this should be considered an indeterminate Tyrannosaurid.-
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From the album: Hell Creek / Lance Formations
Pectinodon (meaning "comb-tooth") is a tooth taxon, since no remains attributable to the genus beyond teeth have been found. Pectinodon seems to be a rare member of the Hell Creek fauna, with their teeth being fairly uncommon (though being so small, I'd guess that few people actively search for them). It was a small Troodontid theropod, with teeth that couldn't handle stresses as well as their Dromaeosaurid and Tyrannosaurid cousins (Torices et al. (2018)). This coupled with their small size suggest that Pectinodon was a small/soft prey specialist, preferring the rodent-sized mammals of the time, lizards, insects, etc. Some researchers have proposed omnivory as a possibility for Troodontids (cf. Holtz et al. (1998)). Troodontids famously are regarded as among the most intelligent dinosaurs for their large brain size / body size ratio. This notion serves as fodder for speculation that had the dinosaurs not gone extinct, Troodontids (Pectinodon being (one of?) the last) would have continued to grow in intelligence and develop sentience and civilizations. Troodontid teeth like Pectinodon can be easily identified by their small size, exaggerated, triangular, apically oriented posterior serrations.-
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This bone was found at Zhucheng, Shandong Province of China. Any idea if it is dionsaurian or mammalian? It looks like a toe bone.
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Found this in a load of river rock delivered to my home in Omaha, Nebraska. Tried to find where the river rock came from but no luck. About the size of a large walnut. Any help would be greatly appreciated!
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Hello! I have these 3 claws. The big one was identified as strutiomimus but I don't know the id of the other 2... The small hand claw has restoration on the base (not very good restored) They are from Garfield county. Thank you so much!!
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Hello dear fellow forum members, I have been offered a bundle of bones and teeth from one of the formations subsumed under "kem kem", although the more blackish ones seem to be of a different preservation than the "classic". There are quite some interesting pieces in there, amongst some turtle bones I think. I would be grateful for any hints on ID you can give me. first some of the tentative turtles.
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Decided to make a thread with an update on my collection with better photos and (currently) up to date info on everything with names and location. Sauropods Jobaria tiguidensis (Diplodocoidea) Jurassic (Bathonian-Oxfordian) Tiourarén Formation Marraba, Agadez Region, Niger Size: 1” Sauropoda indet. (Saltasaurus cf.?) (Titanosaur) Cretaceous (Campanian-Maastrichtian) Allen Formation Rio Province, Argentina Size: 1” Rebbachisaurus garasbe (Rebbachisauridae) Cretaceous (Cenomian) Kem Kem Beds Taouz, Kem Kem Basin, Morocco Size: 0.7” Zby atlanticus (Turiasauria) Jurassic (Kimmeridgian-Tithonian) Lourinha Formation Peniche, Portugal Size: 0.87”
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This bone is from Jiangxi, China, Is it a tibia of a dinosaur?
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Hi Im new to the Forum and the fossil world. So please excuse me if I made any mistake. This is about 7*7*3cm
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Hello, I am making a great of in-situ pictures of my fossil hunting trips for this year. We now have a foot of snow in the ground so fossil hunting season is over. ☹️ These pictures occur in Wyoming, Montana, South Dakota and North Dakota. Mostly Cretaceous aged sites but some Eocene from ND. They are mostly tooth related. I hope everyone likes in-situ pics as much as I do!
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Hello! A collector from Brazil has shown me this fossil. Any idea what this partial jaw could be? It is from Santa Maria formation, Brazil. I don't know if it could be from a Dinosaur... it seems too big to be from a prosauropod... Could it be theropod? Or maybe reptilian or synapsid? Thank you very much.
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From the album: Dinosaurs
These small teeth come from a small theropod (a Troodontid) closely related to the Dromaeosaurids (the "raptors"). They likely fed upon small food items like mammals, lizards, insects, etc. -
From the album: Dinosaurs
These strange, incisor-like teeth were originally thought to have belonged to a large Cretaceous mammal. Later discoveries showed that these teeth matched the front teeth of young Tyrannosaurs quite well. Given closely spaced, parallel feeding traces on bones, these "incisorform" teeth likely were used to scrape meat from bone. -
From the album: Dinosaurs
A rare tooth from the Hell Creek formation. Curiously most Ankylosaurian teeth you see online are actually Nodosaurid. This one is the Ankylosaurus. -
From the album: Dinosaurs
Plant roots often intrude upon a fossil's resting place, leaving behind white streaks when removed. -
From the album: Dinosaurs
A theropod tooth I recently acquired from the JRF. Sold as a juvenile Tyrannosaurid, but I'm not fully convinced.
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