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Showing results for tags 'tyrannosaurid'.
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A couple of days ago there was a thread that provided links to @Troodon 's id posts about identifying tyrannosaurid teeth. I didn't bookmark them and can't locate them. Any guidance would be appreciated. Thanks.
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it seems to be much more basal, but the news keeps saying close relative of t-rex like its a much more derived member of the group
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I decided to expand my obsession with sharks towards an obsession with theropods. I received my first piece today, a Spinosaur from Morocco, even making a display resembling the rolling deserts of the Sahara for it. This thread will be updated when any further theropod teeth arrive
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I have here a Tyrannosaurid tooth identified as Gorgosaurus libratus. It's 3/4" and the provenance is Montana. I'm wondering if the Gorgosaurus claim appears to be accurate. Thank you, Bellamy
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Just wanted to post some of my favourites from the last few months of collecting. Winter is only a few short months away so I’m heading to the field whenever I can. We’ve got some tyrannosaurid (gorgosaurus or daspletosaurus) toe bones as of this morning! Very excited about that. Bunch of verts including a big one, I know most of the verts aren’t from the same animal but I like to set them up like a tail for visitors The ornithomimid claw, a few tyrannosaurid teeth, croc scute & skull section (I believe that vert belongs to a croc as well, the one before the string) little theropod limb bone and the longer one under the claw I believe is ornithomimid as well as it was close to the claw. Maybe a radius or ulna? Also putting some photos of my friend & I out in the area and the landscape itself. Enjoy!
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Hello everybody So I got this small tooth from Hill County, Montana, Judith River Formation, labeled as a Theropod indet. tooth. Length is just around 0.5 inches. CM as seen in the pictures. Any hope for an ID beyond Theropod indet? Thx!
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Got access to some more private land near Dinosaur PP, company owned. My friend was familiar with this area since he was a kid so he said we should check it out, and we found some awesome dinosaur fossils! So far nothing was collected, but yesterday I got ahold of the land supervisor for the company and after receiving some paperwork coming my way on Monday I will be permitted to surface collect anything I find in this area, so this thread will be updated with more finds this coming week. Here are some photos of what we found so far: A lot of the bones looked like they were from a hadrosaur, sort of confirmed when I found this hadrosaur tooth. However there were two partial tyrannosaurid teeth nearby as well...maybe the hadrosaur got munched on... Limb bone (?) with multiple vertebrae nearby. I set them next to the large bone for the photo. Another vert, this one is in the ground so unfortunately I can’t do anything with it. Many, many bones were scattered around the area. Much more photos to come...very excited about collecting here!!
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Hey guys, this tooth was listed as a dinosaur tooth(tyrannosaurid), does anyone know what this belonged to?
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Hi all, I have been staring at this tooth for quite a while now with question marks in my head. It was found in the Bissekty Formation, Kyzylkum desert, Uzbekistan. It's 27mm long (1.01 inch) and properly labeled as Theropod indet. However, the seller raises the possibility of it being a Dromaeosaurid. Serrations do look different in length and width, a count on screen gives me distal 13/5mm and mesial 16/5mm. What throws me off is the rather 'stout' crown and round cross section, more Tyrannosaurid in my view. However, I have no reference images and the only publication I found (Sues and Averianov 2014) is not exactly helpful. I posted available images - I could contact the seller if additional information is required. Any input is highly appreciated.
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- bissekty formation
- dromaeosaurid
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Hello all, Recently acquired 2 teeth, found and sold together, that I would love some insight and second opinions on. Both teeth are described as Tyrannosaurid Indet, from the Judith River Formation. The seller described that he purchased them both together from the harvester, but due to the fact he was not the original collector, the information is isolated to the above information. Smaller tooth is 15/16" long, dark chocolate color, and 1/4" wide. Serrations are present on front and rear edges, with serrations starting midway on the front edge. Larger tooth is missing the front edge, appears sheared. Length is 1 1/8", width 5/16". Serrations present cleanly on rear edge, but again completely sheared from front edge. Color also deeper chocolate brown, but more horizontal banding. Can obtain more detailed and specific measurements of other needed dimensions if needed. Mainly I'm looking for a confirmation of Tyrannosaurid Indet distinguished from other theropods in the area at the time, as I have little experience positively IDing smaller tyrannosaurid material. I've actively worked on distinguishing Carcharodontosaur teeth from Rugops in the field in Morocco, but this is out of my field. All help is greatly appreciated! Will post more pictures in comments
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I've been looking at this tooth labeled Nanotyrannus from the Lance Formation in Wyoming (scale is in cm) . Now, the photos aren't great but I'm sort of wondering if it really is Nanotyrannus. It isn't quite as rectangular as other nano teeth I've seen (though I'll readily admit that I haven't seen a lot) and seems less curved. Any thoughts?
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Albertosaurus tooth for sale
DatFossilBoy posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hello everyone. I saw this nice Albertosaurus tooth fragment online being sold for relatively cheap. I thought it had nice size,serrations and tip. It is from the Judith formation in Montana. Do you think it is worth considering? Or do you think I should keep my money. If I could get it a bit repaired and nicely reglue the fragments,It could be quite neat I think. It would be my first Tyrannosaurid in my collection (and my only for a long time). What do you think? Here are the 3 pictures I have. Thanks alot,Regards
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Howdy, folks! So just thought I'd pop a thread up for a partial tooth in my collection. It was originally sold as "unknown - possible croc tooth" when I purchased it. I tried getting an ID on it a couple of years ago, but the lighting in the photos made serrations hard to see, and it was tough to distinguish small details.... So here's attempt #2 (with better pics)! Any confirmation of ID mucho appreciated. Locality: Hell Creek, USA (afraid exact location is unknown) Mesial view?: Distal view?: Cross section: Closer look at denticles:
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- cretaceous
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From the album: My Collection
Tyrannosaurid indet. (Likely Daspletosaurus horneri or Gorgosaurus sp.) Two Medicine Formation Browning, Montana -
Wear facets, spalling and split carinae are typical features you see on Tyrannosaurid teeth that add character and mystery to these teeth. Here are two papers that examine these features. Wear Facets Lambe (1917) noted wear surfaces on the side faces of tyrannosaurid lateral teeth from the Red Deer River deposits of western Canada. He wrote “as the upper teeth closed outside those of the mandible any wear, not on the point, would result from the contact of the inner surface of the upper teeth with the outer surface of the lower ones.” Recent work, has, however, challenged this assertion, suggesting that the shapes, locations, and incidences of tyrannosaurid wear surfaces are not indicative of tooth−tooth contact (Farlow and Brinkman 1994; Molnar 1998; Jacobsen 1996, 2003). Here the paper reevaluates this evidence by examining wearstriations in tyrannosaurid lateral teeth in addition to the shapes and locations of their wear surfaces. Wear facets and enamel spalling in tyrannosaurid dinosaurs Blaine W. Schubert and Peter S. Ungar Acta Palaeontologica Polonica 50 (1), 2005: 93-99 app50-093.pdf Split Carina 11% of the teeth studied in the paper exhibited this trait. Trauma, aberrant tooth replacement, or genetic factors may have led to the development of split carinae. The paper concluded that although not conclusive genetic factors get the most support but additional study is needed. Other factors like nutrition may play a part but the paper points out is not testable. Pay walled Split Carinae on Tyrannosaurid Teeth and Implications of Their Development Gregory M. Erickson Pages 268-274 | Received 14 Jun 1993, Accepted 17 Jan 1994, Published online: 24 Aug 2 https://doi.org/10.1080/02724634.1995.10011229 From my collection
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- daspletosaurus
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Tyrannosaurid tooth: 1.75"
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- cretaceous
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Hi folks! Thought I might try leaning on the expertise of the forum gurus - I've owned this tooth for a few years and would like to hear any opinions of what the specimen should be classed as. It was sold as Daspletosaurus Torosus, but I'm aware of how hard it can be to label Tyrannosaur teeth (or just leave them as 'indet'). The tooth originated from Alberta, Canada. As it isn't the clearest to see, the denticles (which are very fine and equal in size on both sides) on the anterior edge curve off to the right (viewing the tooth face on), whilst the posterior serrated line is straight. PS: Apologies for the quality of photos too...my phone doesn't enjoy photographing anything magnified.
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Fossil tyrannosaurid tooth found last weekend. 2nd largest one I have found and largest in the area by at least an inch. Formation is belly river group. I believe i is out of dinosaur park formation layers and possibly mix of oldman and foremost formations. I'm thinking gorgosaurus or daspletosaurus???
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Here's some of my best Texas teeth. All personal finds except for the partial Tyrannosaurid tooth. The little red tooth on the bottom is also Mosasaur.
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- cretoxyrhina mantelli
- ginsu shark
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Chiropractor discovers BC's first dino skull. Looks like a Tyrannosaurid. Pretty good find while on holiday http://www.cbc.ca/amp/1.4158748
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- british columbia
- late cretaceous
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Interesting paper that supports reptilian looking tyrannosaurids From Abstract Recent evidence for feathers in theropods has led to speculations that the largest tyrannosaurids, including Tyrannosaurus rex, were extensively feathered. We describe fossil integument from Tyrannosaurus and other tyrannosaurids (Albertosaurus, Daspletosaurus, Gorgosaurus and Tarbosaurus), confirming that these large-bodied forms possessed scaly, reptilian-like skin. Body size evolution in tyrannosauroids reveals two independent occurrences of gigantism; specifically, the large sizes in Yutyrannus and tyrannosaurids were independently derived. These new findings demonstrate that extensive feather coverings observed in some early tyrannosauroids were lost by the Albian, basal to Tyrannosauridae. This loss is unrelated to palaeoclimate but possibly tied to the evolution of gigantism, although other mechanisms exist. http://rsbl.royalsocietypublishing.org/content/13/6/20170092
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- dinosaur evolution
- dinosaur feathers
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Tyrannosaurus sp? from West Texas. No restoration or repair. 1 1/2".
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I searched the web and found only a reference to another thread that seem to say this was Tyrannosaurid indet but it seems to be some time back before Timurlenga was described as a species. My question is, is it possible this is timurlenga? Or does the Bissetky Tyraanosaurid sound a better fit?
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Daspletosaurus? Tooth from Judith River Formation, Montana, which genus?
JojoMozza posted a topic in Fossil ID
I bought this nice theropod tooth online and the seller told me that it was a Daspletosaurus from the Judith River Formation, Montana. While looking online for more info, I found a few people saying that some dealers lie about the genus of tyrannosaurid teeth (especially with Daspletosaurus) as they are hard to identify. Just wondering if anyone here can I.D. this tooth? Suggestions are much appreciated!
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- daspletosaurus
- dinosaur
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