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Showing results for tags 'dinosaur'.
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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 juvenile animal (smaller than "Jane"). Should Nanotyrannus be valid, then this should be considered an indeterminate Tyrannosaurid.-
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- aublysodon
- aublysodon mirandus
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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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- cretaceous
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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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- dinosaur
- dinosaur tooth
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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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- cretaceous
- dinosaur
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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. -
Loc: https://www.geopark-thueringen.de/entdecken-erleben/nationale-geotope/standard-titel Age: Triassic, Keuper For wchich Archosaur, this tooth belongs? I know that it's hard to say, but maybe somebody can do this
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Looking at buying this piece, curious if it’s a tooth stuck in bone or a jaw piece. Albertosaurus tooth from the horseshoe canyon fm. Sorry had nothing on me to measure size.
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- albertosaurus
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Hi all I finally managed to acquire a copy of Robert Plots, Natural History of Oxfordshire, written in 1677. Robert Plot was the first keeper of the Ashmolean Museum at Oxford University. I’ve included a link as it’s well worth a visit. https://www.ashmolean.org This is a large “portfolio” book and includes the first known picture of a dinosaur bone. It was misidentified (quite an interesting misidentification - look it up) but it is probably the broken end of a megalosaurus femur. There were only 750 copies of the first edition of this book published and it makes for a interesting read. This is a second edition from 1705, which has been very difficult to get a decent well priced copy.
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Hi all would anybody be able to identify any of these unprepped specimens? A seller is selling them and I may be interested in purchasing depending on what they could be. They are from the Hell Creek formation.
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Completely new at this and ordered a box of unprepped dino fossils from Hell Creek. Anybody know of a good guide or tutorial? I already purchased Paleobond
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Can anyone identify this? It was found on a dirt road in SE Georgia near the coast. Dredgings from the shipping channel are used to fortify dirt roads. I know it's difficult to do using pictures alone so I'll include as many clear shots as possible.
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From the album: Hell Creek / Lance Formations
It's remarkable that the minute features of this tooth can be preserved with such clarity after 66 million years! -
From the album: Hell Creek / Lance Formations
The preservation of theropod teeth doesn't get much better than this. -
From the album: Hell Creek / Lance Formations
The denticles and enamel of this Ankylosaurus tooth are exceedingly well-preserved.-
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- ankylosaur
- ankylosaurid
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