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Showing results for tags 'hell creek'.
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From the album: Hell Creek / Lance Formations
A handful of teeth from a small ornithischian dinosaur. All recovered from a channel deposit in Montana; they show varying degrees of feeding wear and enamel loss from river tumbling. The two on the left are anterior positions, the rest are lateral/cheek teeth.-
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From the album: Hell Creek / Lance Formations
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Please, tell me. Thank you.
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Fossil ID Help - Triceratops or Nodosaur? Hell Creek Formation, Harding County, SD
HellCreekDinosaurs posted a topic in Fossil ID
Hi All, First time posting! I need help with a fossil I found in the Hell Creek Formation of Harding County, SD this year. At first I thought it was a piece of Triceratops frill, but the more I prepped it, it appears to have edges with bone surface most of the way around it. If it was a piece of frill, I would not expect the edges to taper off (unless it was from a juvenile I guess). If it is a scute then it is absolutely huge and not like anything I have seen before. Hopefully the fossil community can help shed some light on this mystery. Any photos or links to reference other fossils would be helpful as well. Thank you in advance for your help! - Ryan
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Hi y'all, I came across this odd lower mammal molar from the HCF and I still can't make a more precise determination. It doesn't seem to follow the metatherian tooth design, so I guessed it must be eutherian. It seems to have only four cusps. Any insight is appreciated, and I can provide more photos if need be. @jpc Edit: I can't seem to tag people, could someone page jpc?
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Hi everyone, I brought a small collection of hell creek digits and claws, and wanted some help with identification. They come from Garfield county and are mostly small. Appreciate any help and thanks a lot ! first is a tiny claw, theropod or bird?? Measures about .375in second one looks like a theropod claw? Maybe dromeosaurid or struthiomimus ? .5 inches third one is a little over a inch, maybe pachy/thesce? 4th one not sure what species 1.25inch 5th one 1 inch. Turtle? 6th theropod? Dromeosaurid? Troodontid? 1 inch 7th a 1.25inch digit not sure what species. again thanks for all the help, I’m not very comfortable with identification of digits and claws yet :).
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Hell Creek Fossil ID Help - Triceratops Frill, Squamosal skull fragment, or fish?
MuseumofBioNotreDame posted a topic in Fossil ID
Dimensions: To begin, the specimen is 36cm long, 19cm wide at the base (widest point), and about 7cm thick at the thickest point (base). Background: I am a student doing research in the Museum of Biodiversity at Notre Dame. I have begun a project to try to identify many of the fossils in the collection. Many years ago, there was a faculty member who was a paleontologist who collected specimens for many years, most of which now reside in the museum. The issue is that he passed away suddenly and left many fossils without much or any information attached. From what I have been able to gather, most of his fossils have come from the Hell Creek Formation in Montana (66-65 mya, late Cretaceous), due to all of his fossils in field jackets coming from this location (like this one, that I removed from the jacket). All other jackets (that are currently opened) in the museum contain remnants of a triceratops. There are many more that have not been opened from the field, which I believe were collected in the mid 1990s (unimportant). Because of the ambiguous nature of the fossil and my inexperience with fossils (I have just started exploring the field). I am the only person in the museum who has touched the fossils in at least 5-7 years, as there is no full-time geologist or paleontologist on faculty at ND, and the collection is solely taken care of by students who have interests. Identification?: When I first started working on the fossil, it was labelled with an identification as "Fish?". I have absolutely no idea who tentatively identified it as such, and in looking at it, I have no idea what led them to the conclusion. I, personally, do not see anything fish-like about it, sans the vague shape resemblance. Because of this, and my suspicions about where it was found and what other fossils are found at Hell Creek, I thought that it was unlikely a fish. From the concentration of ceratopsidae that are found in the formation and the amount that we have in the museum, I started to explore the possibilities of it being a part of one. Because the museum also has other parts of the same triceratops skull such as two horns, the beak, and one small skull fragment. I first thought that it may be a frill, due to the lines that I thought might be blood lines, which are found on most frill fragments, but the patterns appeared to be different (see photo 2). I then looked into other parts of the skull that might fit this fossil fragment. Following this, and based on the ridge that runs along what I assume to be the back of the specimen, I theorized that the it may be a piece of the squamosal bone morphology of the skull of a ceratopsian. Also, because there are parts of an ankylosauridae in the museum, I thought that it may be an armor fragment. Please know that these preliminary identifications are based on my limited knowledge of the morphology of late Cretaceous animals, and the lack of information I have on this specific fossil. Any help will be appreciated, and I will be looking closely to respond any questions on the subject. Lastly: As I am beginning in the subject of paleontology, where do you suggest that I can get my information? Are there any preferred resources, textbooks, or databases where I can increase my knowledge? Thank you for your help, and I look forward to learning more and maybe eventually contributing to the Fossil Forum when I learn more in the future. I have been using the one textbook in the museum dealing with fossils of these sort, where I read about the frills and skull morphology of ceratopsidae: Romer, Alfred S. (1966). Vertebrate Paleontology. The University of Chicago Press.
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Identification Troodontid teeth may be identified by their exaggerated, triangular, apically directed posterior denticles1. Pectinodon bakkeri is the only Troodontid species currently named from Lancian strata; its teeth are on average smaller and more gracile than those of its cousin, Troodon. Comments This is a large anterior dentary tooth, recovered by screening matrix from a channel deposit in central Montana. Pectinodon (meaning "comb-tooth")1 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. It was a small theropod, with teeth that couldn't handle stresses as well as their Dromaeosaurid and Tyrannosaurid relatives2. 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))3. References 1. Carpenter, Kenneth. "Baby dinosaurs from the Late Cretaceous Lance and Hell Creek formations and a description of en new species of theropod." Contributions to Geology 20.2 (1982): 123-134. 2. Torices A, Wilkinson R, Arbour VM, Ruiz-Omeñaca JI, Currie PJ. "Puncture-and-Pull Biomechanics in the Teeth of Predatory Coelurosaurian Dinosaurs." Curr Biol. 2018 May 7;28(9):1467-1474.e2. 3. Holtz TR Jr, Brinkman DL, Chandler CL. "Denticle morphometrics and a possible omnivorous feeding habit for the theropod dinosaur Troodon." Gaia. 1998; 15: 159–166.
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Warning, on our favourite auction site, a number of fossils from lower Permian of Richards Spur, Oklahoma are been sold as Hell Creek. The items are listed as coming from Hell Creek, Eastern Montana and are advertised as species of theropod including partial jaw/skull , jaw bone and nasal skull bone. This is the correct iD and is from original Vendor who first bought this to the market
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Hi everyone, New here! I recently found these a few weeks ago in the Badlands of Eastern Montana, in what I believe would be 'Hell Creek' formation. For clarities sake, my knowledge level is very low, and I'm not looking to sell anything. I hope the photos aren't too confusing visually. The posted photos are of 2 ea. fossils. I found these at the bottom of a canyon while out on a hike. They weren't poking out of deposit per se, but were rather tumbling down the drainage out of a hill side/feature. There were quite a few more pieces laying around where I found these. They are very heavy, hard, and have the feel and 'ring' of fired clay/ceramic. Also, both of them are two-sided, interestingly, as if they are the remains of something that was sort of piled up - or maybe 2-sided indeed. I did some googling and found nothing that resembles them. I did actually join today to get some help in IDing these form all you folks, but this is a VERY cool forum and, I think I will enjoy spending a bit of time here. Thanks a lot for any knowlege that is offered up. Your help is much appreciated! Rod
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Hi There - I came across this nice looking dino bone identified as "The top section of a pubis bone from a Dromaeosaurid." This bone was found in the Hell Creek Formation in South Dakota. It looks like a nice piece with minor repair, but I wanted to get some second opinions on whether this is a piece of a pubis bone, or possibly a chevron... or something else. I'm also curious if folks agree with the the ID of dromaeosaurid (unable to ID beyond the family). What do you think? Thanks!
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From the album: Hell Creek / Lance Formations
The Hell Creek formation exposed in Montana - a fossil-lover's paradise.- 1 comment
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From the album: Hell Creek / Lance Formations
A shed Triceratops tooth found at a microsite-
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From the album: Hell Creek / Lance Formations
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From the album: Hell Creek / Lance Formations
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From the album: Hell Creek / Lance Formations
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Hello, I saw this small jaw section with tooth section for sale. It measures a little over two inches, and comes from the hell creek formation. I wanted to ask if it’s from a theropod as the seller claims. The tooth socket isn’t as round as you would expect in a crocodile jaw. But they are still pretty small so I just wanted to make sure it’s not from something else like a different reptile. Thanks for any help.
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spotted this online, claims to be a dinosaur jaw from hell creek, but is it actually from a dinosaur, surely it could be from a croc aswell, anyone more knowledgeable have a better id?
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Identification According to Dr. Dave DeMar's ID guide for Hell Creek microfossils, frog jaws have a bumpy labial surface (unlike those of salamanders or lizards). Comments Frogs have small and fragile skeletons, so identifiable remains are uncommon, especially in the Hell Creek formation where the preservation bias seems to favor large-bodied animals.
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From the album: Hell Creek / Lance Formations
An overlooked member of this ecosystem - the humble frog. The night soundscape may have been dominated by them and insects, as in many forested/swampy ecosystems today. -
From the album: Hell Creek / Lance Formations
During my first pilgrimage to the Hell Creek formation, there were some fantastic sunsets.- 4 comments
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From the album: Hell Creek / Lance Formations
This rare theropod tooth was found via screen washing matrix from a channel deposit. It's large for the species and from the front of the jaw. All of the denticles are intact - a spectacular specimen. 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.- 1 comment
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I'm interested in this rib end from the Hell Creek formation of South Dakota and was wondering if there was any way to identify the species. I've compared it to several large species that were native to the area and in my opinion, this piece compares very well with tyrannosaurus. Then again I'm no expert and would very much appreciate a second opinion. I've included examples of ribs from each species I compared it to.
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I have some pieces of dinosaur bone from the Hell Creek formation with curious divots. Is there a nice guide on the forum (or elsewhere) for assessing whether these might be bite marks? I realize that IDing the biting species (if there even is one) can be difficult/impossible. But I would love to read an explainer that lays out the principles for assessing the likelihood that particular marks come from predation/scavenging. I have used the search tool, but only found discussions around specific specimens.
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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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