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Showing results for tags 'hell creek'.
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From the album: Dinosaurs
Tyrannosauridae Hell Creek Fm., Powder River Co., MT, USA If Nanotyrannus is valid, then this is Nanotyrannus. Note that the serrations wrap around the tip ("apex") of the tooth as is common in unworn Tyrannosaurs. -
Hey guys, My friend asked me what his tooth was, it’s from Hell Creek. My first thoughts were Nano or possibly Dakotaraptor. The size of the tooth is 21mm and it has 2 serrations/mm on the distal side. On the mesial, the serrations are worn off. It’s an anterior tooth. Do you guys have any idea of an ID? Would be greatly appreciated. Maybe @Troodon knows? Thank you and kind regards.
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Identification: This is a typical Dromaeosaurid tooth, with the serrations being differently-sized on each carina; the denticles are much smaller on the mesial carina compared to the distal carina. There's also slight recurvature, which is common in Dromaeosaurs. There are no other features present that allow for identification beyond Family. Described Dromaeosaurs in the Hell Creek Formation include Acheroraptor temertyorum and Dakotaraptor steini. Because both of their known dentitions are incomplete, this tooth may belong to either, or another undescribed Dromaeosaur. Identification further discussed here. Notes: CH: ~ 10.5 mm CBL: ~ 6 mm CBW: 3 mm Mesial denticle density: 8 / mm Distal denticle density: 4.5 / mm There is some minimal feeding wear on the tip, but this tooth is otherwise flawless.
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Hello, Any thoughts on this? Adding a Rex bone would be awesome, if I can get it confirmed as been legit. Hell Creek, South Dakota, said to be possible end of a scapula 7 x 4 3/4 x 1 Now, weirdly, when I try to contact the seller I get an error message. So I can't get a more exact county/town yet---but hopefully that error will be fixed so I can soon. So, is the ID on this good? Also, the bit near the top where the ID number is added--the color looks off. Is that restoration? Thanks for the help
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Hello! I'm a new member and I discovered this forum recently. I've already learned so much browsing threads. I'm not sure if it'll be possible, but I was hoping that I could get some help identifying a section of fossil scapula that I came across and was thinking of purchasing. The seller doesn't have much information on it besides it being a Hell Creek find in South Dakota. He thinks it may be from a tyrannosaur. Pictures attached, any thoughts would be great!
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On my welcome post, I had mentioned that I was looking for a claw for my daughter. I was able to contact someone that has a claw that was found by them in the Hell Creek Formation in Montana. They state that it is from an Alvarezsaurus. I know very little about this dino. Only thing I could find when looking up Alvarezsaurus in Hell Creek is this Wikipedia Trierarchuncus It seems like not much is known about this particular species in Hell Creek. So, can any of you more knowledgeable folks identify this as an Alvarezsaurus, or possibly something different? Looks to me like it would be from it's foot. Thanks a ton for any help you can offer up!
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Hello! I’m a complete newbie, and would love some help id ing these cool finds. They were found around Jordan MT along a river shore(private land) that has been greatly exposed due to drought. Thank you!
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From the album: Dinosaurs
Dromaeosauridae indet. (Velociraptorine?) Hell Creek Fm., Carter Co., MT, USA Crown height: ~ 10 mm ~ 4.5 serrations / mm (distal) NB: "hooking" serrations near the tip, characteristic of members of Velociraptorinae (Currie (1995)). -
From the album: Dinosaurs
Dromaeosauridae indet. (Velociraptorine?) Hell Creek Fm., Carter Co., MT, USA Crown height: ~ 10 mm ~ 8 serrations / mm (mesial) -
Hi y'all, I picked up this gorgeous Dromaeosaurid tooth. It was listed as Acheroraptor and I bought it thinking it was one. However, upon receiving it and taking some measurements, I believe it may be a candidate for Dakotaraptor steini, as it virtually matches one in @Troodon's collection in every metric. It has a semi-oval base, with no ridges or facets commonly seen on Acheroraptor. The mesial carina is straight, and terminates almost 1/3 the CH from the base. Dromaeosauridae Hell Creek Fm., Carter Co., MT, USA CH: ~ 10.5 mm CBL: ~ 6 mm CBW: 3 mm Mesial denticle density: 8 / mm Distal denticle density: 4.5 / mm Distal serrations: Mesial serrations: Base: This is the other tooth I'm referring to:
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Please help identify this fossil found in southeast of Hodges, MT.
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Please help identify this fossil found in Hell Creek.
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STILL don't have our first T.Rex tooth yet
hadrosauridae posted a topic in General Fossil Discussion
I thought this year that my son had found our first T.Rex tooth. Its both larger and thicker than any of the Nanno teeth we have dug. I was 99% sure we had our rex until I just used my (crappy) phone camera to finally get a serration count. 2.8/mm. Thats clearly in the Nanno count. Maybe next year will be our year.
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Finished my latest prep. Now, I realize that in the worlds of both commercial and academic paleo, this is a useless, junk fossil. Its an unassociated, partial in poor condition, and any final monetary value doesnt meet the time invested in the prep. However, its special for me in that its my first "wild" find. I hiked, explored, tracked the float, found the end of this in the face of a wall, then excavated it. I was hoping for a much more complete fossil, but this was it. It is highly fractured and deeply root rotted. But I carefully disassembled all its parts, cleaned them, consolidated them, reassembled into proper positions and finally repaired the gaps to strengthen it. Now, I've dug and prepped lots of fossils over the last 12 years, but all have come from sites someone else found. They did the leg work and established the quarry, I just dug in it. Nobody knew this was there until I found it. Im still hopeful theres more of the animal scattered behind it. An Ed. vert centrum washed out from a few feet away. Hopefully I'll get the chance to check the site again. Just a side comment... I hate prepping this type of fossil. I glued and consolidated this as I uncovered it, which also glues all the matrix in place. That helps prevent the fossil from collapsing into gravel en route home, but then I have to dissolve the glue and completely disassemble all the broken chunks, then pray I can put everything back where it belongs. anatomy and taphonomy. Every fossil tells a story and the following is my attempt at reading that tale. I found a great PDF article https://archives.palarch.nl/inde.../jvp/article/view/447/439 specifically about the pes of hadrosaurines. It would appear my fossil is the distal end of Metatarsal III, likely left side. The erosional break was at the point where MT-II and MT-IV were located, and the bone was pointing distally into the matrix, so no other metatarsal bones would have been remaining if deposited in articulation. Phalanges III was not found on excavation, although it is possible to still be in situ and just more separated than the distance I examined. However, the likely reality is that this indicates a disarticulated and isolated element. The measurement on the width is 160mm which would make it an adult, although not at the largest size. The fossil has a high degree of fracturing which is likely due to a combination of freeze/thaw cycles and plant root invasion. Beyond this, the fossil still has a mostly intact surface which says that it did not suffer long term surface weathering or osteophageous beetle predation. The in-situ damage was confined to the highest points, which shows it possibly suffered peri-depositional damage. The matrix was a loosely consolidated mudstone without associated gravels or stone inclusions, indicating a low energy environment such as a delta, marsh, or low flow river. Walter Stein believes the layer to be a continuation of a densely fossiliferous, multi-taxic bone bed discovered about 1/4 mile away. The fossil as I started prepping. After clearing off the matrix. distal end proximal end prepped and repaired
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I picked this up online awhile back as a Triceratops metatarsal lll. 17 in long.7 in. wide on the proximal end.6 in on distal. Weight is 7 lb, 5 ounces. Found in Hell Creek formation, Meade County, SD. Do you agree or is it possibly a different species?
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On the third day of our Hell Creek trip in Baker, Montana I stumbled upon a small theropod claw with identical blood grooves running down either side of it. Noel and I looked around for references but found no conclusive match for what it could be. It is 1.3 cm long, roughly .3 cm in width. @PaleoNoel
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I am just driving back from a fantastic 5 day collecting trip in Southeastern Montana. I had the opportunity to collect on a private ranch that had not been heavily hunted for several years. Our group made quite a few interesting finds. I am hoping that someone on the forum might be able to assist in identifying this unusual bone. It is definitely theropod and based on the size, likely tyrannosaur. It appears to be a portion of the skull but I am having trouble matching it up. I apologize for the lousy pictures in advance. The bone measures approximately 5-6 inches.
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From the album: Dinosaurs
Tyrannosaurus rex (Juvenile) Hell Creek Fm., Garfield Co., MT, USA ~ 13 mm crown height ^wonderful art by RJ Palmer Fossil in Collections: http://www.thefossilforum.com/index.php?/collections-database/chordata/dinosaurs/juvenile-tyrannosaurus-rex-tooth-r2081/ The lighting wasn't very good, so I might redo this photoshoot later. -
From the album: Dinosaurs
Triceratops prorsus Hell Creek Fm., Harding Co., SD, USA 3.5 cm height On the ranch where this tooth was found, only T. prorsus skulls have been found in the 30+ years the company has operated there, lending a very probable, precise identification for this Ceratopsian tooth. (T. prorsus was one of the last dinosaurs, younger than T. horridus. The two species are also stratigraphically separated in the Hell Creek Fm., so it makes sense that one may only find one species in a particular deposit.) For most Ceratopsid teeth (from the Hell Creek Fm., for example), only association with an identifiable skull can allow for identification beyond Ceratopsidae indet. Fossil in Collections: http://www.thefossilforum.com/index.php?/collections-database/chordata/dinosaurs/triceratops-prorsus-tooth-r2122/-
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From the album: Dinosaurs
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Identification: On the ranch where this tooth was found, only T. prorsus skulls have been found in the 30+ years the company has operated there, lending a very probable, precise identification for this Ceratopsian tooth. (T. prorsus was one of the last dinosaurs, younger than T. horridus. The two species are also stratigraphically separated in the Hell Creek Fm.[2], so it makes sense that one may only find one species in a particular deposit.) For most Ceratopsid teeth (from the Hell Creek Fm., for example), only association with an identifiable skull can allow for identification beyond Ceratopsidae indet. Notes: This tooth is partially rooted with noticeable feeding wear on the crown (the flattened surface). It has some minor repair. The second image shows a close view of the enamel, which has good preservation. Relevant Literature: 1. MARSH, OTHNIEL C., 1889. Notice of gigantic horned Dinosauria from the Cretaceous. The American Journal of Science, Series 3 38: 173-175. 2. SCANNELLA, J. B.; FOWLER, D. W., 2009. Anagenesis in Triceratops: evidence from a newly resolved stratigraphic framework for the Hell Creek Formation. 9th North American Paleontological Convention Abstracts. Cincinnati Museum Center Scientific Contributions 3. pp. 148–149.
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For day 3, it was decided to go back to the Deers Ears butte. Everyone was sore and worn out from 2 days of hiking, so a chance to stay in a single spot and dig would be a chance to rest. My team went to the Tooth Draw quarry, the others went to other sites, including one new one. The day started pretty slow, but then mid afternoon my son uncovered a tooth (havent determined T.Rex or Nano). I was so proud of him, he did an expert job in recovery. The tip was broken insitu and could have been easily separated or lost, but he was slow, careful and judicious with the paleobond and got the tooth out whole. Now I need to find my photo scale to count serrations. This tooth has a lot of wear but there should be enough left to make a good count. Within half an hour, 2 more Rex teeth were uncovered by other diggers. Another storm was building and there was worry we would have to jump and run again, so those with finds were trying to get them out quickly. I began packing up my gear but the storm blew past us to the south, so we went back to digging. That was when my son found a Pachycephalosaur hornlet! It was kind of funny because at first it looked like just another BOB, but as my son scraped away some more matrix from it he said "Its got a weird wrinkled texture." When I looked at it close I yelled " I know what that is!!" For those unfamiliar, Pachy material is VERY limited, so this piece is going to be made available for research and study. As rare as this little find was, it would be dwarfed by a find from another group that day. Someone found a Pachy skull dome at one of the new sites! I was hoping Walter would be so excited that he would prep it out that night, but he had other things that needed attention, so we only got to see the dome. Any attached hornlets were still in the matrix block. Hoping that he posts some prepped pics soon! So 2 more good finds from my son, but I struck out this day.
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What a trip my son and I had this year! We started out in the Hell Creek fm of South Dakota. This was a special trip through Paleo Adventures for his "veteran" guests who have already spent a few years with him and could operate without supervision. We started out hunting a new ranch. This property is virgin ground with LOTS of acreage that needed exploration. The group was split into 3 teams, each taking a different area. Our team was further split into pairs. So, it was my son and me, exploring for new outcrops. The sun was intense, the temperature hot, and hours of hiking and staring intently at the ground for float and possibly something sticking out of a wall. Eventually we worked our way down into a draw and found an ironstone layer. Closer inspection revealed a large amount of fossil material. There were bits of turtle shell, croc scutes and small bone bits all throughout. The only complete bone was this distal caudal vert my son found. The sight was thus named "Mitchells Micro Site". We bagged a selection for further study, marked the location and continued on. From the draw, we worked our way up to the main butte. Another pair was investigating the east side, so we began working the west side. Only a few minutes later I spotted a small sun faded bit of float. I began looking up the slope and saw another, and another. As I climbed the side it was obvious that I was on a hot trail, and then I found it, a bone sticking out of the wall, just below the surface. Sadly, the only thing left was about the last 8 inches of the bone (like Edmontosaur), and its full of root rot so the prep is going to be ugly. Just around the corner I followed more float down the slope and found an Ed vert centrum in the wash. The processes are gone, but surprisingly the broken edge seen in the pic, was laying on the surface up-slope, so its reattached and the prep has begun. Walter's team found a large surface exposure, about half a mile away and determined that my Ed finds, and another team's finds were all the same horizon of large multitaxic bone bed. My son ended up finding a nannotyranus tooth in the large exposure site, the only tooth found there that day. And then a call came across the radio "we've got 11 vertebrae in the wall and they just keep popping out". Of course, everyone went to check it out! It appears to be a juvenile Ed. with caudal verts exposed so far, but Walter is hopeful the most of it is still in the ground. Even though it was already late in the afternoon, I'm sure we would have stayed on the site much longer but a wicked looking storm was building fast and moving our way. So the race was on to recover what was exposed so far and get out while the getting was good. We barely got out too. As soon as we got to the pavement, I could see a lowering coming down from the storm, and it wasnt much longer someone said they could see it sucking dirt up. The last place I want to be during a tornado is in the middle of the prairie and stuck in bentonite. So that was the end of the first day. We headed back to town tired, sweaty, but ecstatic after an incredibly successful day.
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Two Tyrannosaurid teeth that I ordered early this week has arrived. This is the first tooth that I want to show, which is a tooth of a juvenile Tyrannosaurus rex (or Nanotyrannus). Since I personally believe that the Nanotyrannus is an invalid genus, I think this is a juvenile Tyrannosaurus rex tooth. For those who do not agree, this is a Nanotyrannus tooth. This tooth is from Hell Creek formation of Garfield Co. Montana. This is an 1-3/8 inch, and has some chips and scratches at the labial side, but I think this is still a great tooth.
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From the album: Dinosaurs
Triceratops prorsus Hell Creek Fm., Harding Co., SD, USA This is a nice tooth with great enamel, partially rooted, and has some feeding wear (which I enjoy). It does have some repair/consolidation. Usually, Ceratopsian teeth are indistinguishable from each other. In HC, Torosaurus and Triceratops (currently) are the valid genera. However, the company operating on the ranch where this tooth was found has only found T. prorsus skulls in the 30+ years they've been there. This tooth, being found in the same deposit, therefore has a good probability of being from T. prorsus.
