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Found 100 results

  1. Every few years we get rewarded with a new dinosaur described from the Lance/Hell Creek Formations. In this crazy year we finally have one. Finally an Alvarezsauridae has been described from the Hell Creek Formation: Trierarchuncus prairiensis. Sorry its paywalled cannot make comments https://www.sciencedirect.com/science/article/pii/S0195667120302469 Here is some info on this very different dinosaur, one of my favorites, including some of my material so you can see what the paper is describing. Far better than what you see in the paper
  2. Late Cretaceous mammal fossils from North America

    Could someone help me find PDFs of scientific papers about mammal fossils from the Campanian-Maastrichtian of North America? I'm specifically interested in papers that deal with mammal faunas from the Hell Creek Formation, the Lance Formation and the Dinosaur Park Formation... Thanks for any help Christian
  3. Looking for confirmation on this theropod bone being sold. Seller is identifying it as a theropod (Anzu?) Arctometatarsal from the Hell Creek of Montana, Powder River County.. 10.4" Long. They indicate it cannot definitely provide an ID but the giant raptor Anzu Wylie is a likely candidate be cause other material from this theropod has been found at the quarry. What is a Arctometatarsal?
  4. Hi all, I posted this tooth for ID a while back. Conclusion was that it could be a Dakotaraptor, maybe, maybe. Since then I am going back and forth on the ID, basically on a daily basis So I decided to take more & new images, measure it thoroughly, put it up again, and kindly ask for your help. It was found in the Hell Creek Fm, Powder River Co., Montana. Measurements are: CH: 2.08cm CBL: 0.8cm CBW: 0.42cm Serration count per 5mm is mesial 24 and distal 18. What makes it hard for me to judge: the shape of denticles is between round and chisel (?), the tiny mesial denticles, and the position of the carinae. Lowest part of the mesial carina is sheared off, but I would not expect a twist - looking closely it would end either half way or 1/3 from base. Any help is highly appreciated!
  5. Unidentified Theropod tooth

    Hey everyone i hope you all had a great holiday season....this next tooth in my collection was labled saurornitholestes from the hell creek formation from powder county MT. We know that the only two described raptors from there are dakotaraptor and acheroraptor so im curious to see what you all think of this one. Nanotyrannus perhaps? Unfortunately the anterior serrations have worn off which im sure will make id'ing this tooth difficult but anyway here it is. ....the CH is 9 mm the posterior serrations are 12 per 3 mm. @Troodon
  6. Troodontid or Dromaeosaurid teeth?

    Hey everyone, I came across these teeth online; They're being sold as an Acheroraptor teeth, but seemed odd to me and reminded me of some recurved Pectinodon teeth I had seen elsewhere (given their small size, too). [Tooth 1] The tooth was found in Hell Creek deposits in Carter County, Montana. I edited the seller's images together to make some features more visible. Its total height is 5mm; the serration density I measured is around 6/mm; Scale bar is 4mm. [Tooth 2] The tooth was found in Hell Creek deposits in Powder River County, Montana. Its total height [?] is around 4mm; Since there was no exact scale reference I couldn't edit in a scale bar. Thanks for any help with this!
  7. I urge caution to all collectors buying or trading from dealers, diggers or fellow collectors. Most collectors, diggers or dealers are honest and trustworthy but not all have a firm handle on identification and I'm seeing this situation worsening not improving. Its not easy even for paleontologists who are trained. I include collectors because like myself, have over the years, been sold misidentified material. So dont trust anything you see offered to you and get it verified. Here is just a sampling of a few items I've run across. Provenance is very important in identification ALWAYS request Formation, State or Province and very important County or Town if in the States or City/Area if Alberta. I see lots of genus/species names being assigned to Ceratopsian or Hadrosaurian bones. Other than Edmontosaurus from the Hell Creek or Lance formations its extremely difficult to assign names to any post cranial material from these families. There are just to many named or yet to be named species from Campanian deposits of formations like Aguja of Texas and the Judith River & Two Med Formations of Montana not to mention Canada. Theropod teeth especially Jurassic ones are very hard to distinguish between one another, photos are just not adequate to validate them. Serration counts and dimensions are needed to try to properly assign them. So request it from the seller. Some real life examples: Very nice Metatarsal listed as a Lambeosaurus from the Hell Creek Fm, Jordan, Montana. Species does not even exist in the HC. Its Edmontosaurus This beautiful vertebra is being listed as a caudal of a Carcharodontosaurus sp., a great collector piece. The description states that the ball and socket indicated how far the tail could swing. Unfortunately the seller is looking at the wrong end of the dinosaur. To me it looks like a cervical vertebra of a Spinosaurid. I did advise the seller a few days ago and he did say a change would be made and the listing has been corrected. Here is a photo of a Sigilmassasaurus for you skeptics This type of tooth from the Kem Kem is an indeterminate Abelisaurid not a RAPTOR, not a Dromaeosaur, not a Deltadromeus Very nice femur being listed as Pachycephalosaurus, its Thescelosaurus .. Very nice rooted tooth being listed as Torosaurus, its a Ceratopsian tooth. There is no way to distinguish Torosaurus teeth from all the other large bodied ceratopsian in the Hell Creek Fm other that if it was found with an identifiable skull. This claw was sold as Troodon from the Judith River, to me it looks like Caenagnathidae This is being listed as a first phalange Toe bone of a tyrannosaur Daspletosaurus. Its a metatarsal of an indeterminate Tyrannosaurid either Daspletosaurus or Gorgosaurus. Unless it was found with some Daspleto diagnostic material, difficult to tell them apart. Seller was advised a long time ago, no changes made. A Daspletosaurus tooth is listed from the Judith River Fm...beautiful tooth but one cannot distinguish teeth between teeth of Tyrannosaurids and Daspletosaurus sp. although assumed to be present its yet to be described from JR deposits
  8. Hey everyone! In this post im going to be sharing two teeth from my collection. The first one was sold to me as acheroraptor. Its from the Hell Creek formation in MT and its CH is 7 mm. @Troodon
  9. My sons and I have been searching different formations in MD/VA for many years so we know how to recognize the different formation layers and have a good idea where to find/or at least check for micro sites/micro lenses. My sons have also been collecting the Eocene/Oligocene formations of Nebraska for years so again they know how to recognize the formation layers. My younger son Mel moved to South Dakota in 2018 and began to also collect the Lance Formation and Hell Creek Formation. However he is still learning the different formation layers. His interest is dinosaur fossils from these formations. My interests are the much smaller micro dinosaur fossils as well as the micro mammal, squamate, amphibian, and fish fossils. I’m always bugging him to send me micro matrix. He sent me matrix this Fall. This post is about one batch of matrix. Mel’s first approach was to send matrix from small areas that have high density surface concentrations of teeth and bones. Where Mel is collecting is more flat and rolling with different Hell Creek layers exposed on the surface versus bluffs and small cliff faces. Mel for Thanksgiving sent me a large USPS priority box of matrix (around three gallons) from a small 6 ft. by 6 ft. area that had a high concentration of dino teeth on the surface. Although sand/clay based this matrix was hard as concrete. I had to use a rock hammer and a small hand sledge hammer to break what he sent into more manageable pieces (definitely not recommended if you are looking for larger specimens). That said the matrix broke down completely in a single day in buckets of very hot tap water and dawn dish soap. I would every few hours use finger pressure to help break up clumps. There was very little residue left after breakdown of this matrix. The below picture shows the residue from about 1/3 of the matrix or around a gallon. The below picture shows what I found. On the left maybe some petrified wood? Doesn’t really look like bone. Maybe geologic. In the middle there is a really nice Croc tooth (4mm), seed (5mm) (maybe modern?), and a partial gar fish scale (7mm). On the right there are several definite small bones and a few specimens that could be bones. Looks like a terrestrial/fluvial environment. What I found was nice but not worth the effort to remove the matrix, send it to Virginia, break the matrix down, and then to search it. Although like I said earlier, there was very little residue after breakdown, so it took only about 15 minutes to search all of the residue. Sampling different sites/layers and trial and error can be extremely tedious and non-productive if you really don’t understand the formation layers and how to recognize them in the field. So I reached out to a TFF member for advice and insight. He explained the matrix types and gave advice on where to take matrix samples. Taking matrix from areas with high density surface concentrations of larger fossils is one way to sample for micros like Mel did for this matrix. However TFF member cautioned that lots of times these concentrations of larger fossils got washed from another layer to the current area years ago and that the underlying layer may not contain much at all as seemed to be the case with this area/layer for this matrix. When you find a good micro site/layer it is very rewarding in the micros that you can find but these sites/micro layers can be difficult to find especially if you don’t have a lot of experience with the Formation. If anyone reading this post has any advice or insight for looking for a Hell Creek Formation specific micro site/layer please post it in a reply. Marco Sr.
  10. Work on Hell Creek Display Begins

    It has taken 10 and a half months but I can finally start putting together our large display of the Hell Creek Fauna. I am really quite excited to start putting it together. We have a pretty good cross section of critters and I think it will be an excellent display to show the diversity of the formation. I also think this will be a great display to use as we explain how different animals share an ecosystem which is a science standard we want to get into more with the 2nd and 3rd grade students. I delayed starting this until we had tracked won three key fossils we were missing, Leptoceratops, Pachycephalosaurus, and Denversaurus. Those three have all gotten crossed off the list in the last month or so with the final domino being Denversaurus. We are still missing a Pectinodon tooth but we can add that down the road. I think now is the time to put it together so we can use this display for our presentation in Paradise which comes shortly after the year anniversary of the Camp Fire which burned the city down. It is a special program at the newly rebuild elementary school I will add some pictures of all the fossils in their individual displays later and once it is all living in one display. I am really proud of this one and I want to give a huge thanks to @Troodon who helped us immensely with this formation. Here is the Denversaurus tooth that I just picked up. A pretty nice tooth and a decent price at that. Today has been a good day for us as this is the one we needed to finish this up right !
  11. This was on several twitter paleo pages, posted this morning by several paleontologists. Comments and photos are that of the of North Dakota Geological Survey's Paleontology protection program. 2014 article https://www.theguardian.com/us-news/2014/oct/21/dakota-ducbkilled-dinosaur-home-bismarck This was the old "Dakota" exhibit. It was meant to be temporary. The arm is the piece on the bottom edge. It was previously displayed with the palm up, and this side was not well prepared and wasn't exposed before. This is indeed a portion of "Dakota" the Dinomummy, which is part of the North Dakota State Fossil Collection. We are currently working on cleaning this specimen for a new exhibit to open Feb 2020 People were confused at exactly what they were looking at here, so we've thrown together a little guide to explain how the bones of the hand relate to the fossilized soft tissue. Yes, digit III has a large 'hoof-like' nail, and much of the hand is encased in 'mitten' of skin. What this means is that the fingers could not really move independently that much, but acted more as a single unit. The tiny pink finger (digit V) is reduced and had no nail. Note: these images are "in progress" images. More work has been completed since they were taken Tail skin
  12. I try to get out dinosaur collecting twice a year and this year has been very good to me. Here are some quick field shots of SOME of my finds for this fall. I have a big prep job in front of we but I also use someone in Hill City to do some of my complicated work. Sites are in Montana and South Dakota all from the Hell Creek Formation. My Spring trip post have more specifics on the localities. My best find of the trip occurred on day 3 in Montana a complete dentary (lower jaw) with teeth of a Ceratopsian most likely Triceratops sp. The field photo show the jaw with lots of matrix around it to protect the sheath and teeth.. The jaw layed perfectly for me with teeth side up and flat so it made collecting easy. Here is an initial look at the jaw. The bone area in the middle is actually a sheath that is covering battery of teeth. Not all the teeth are covered by the sheath those in the far right are exposed and you can see the center ridge poking out, red circles. Prepping will expose them. Length 25" (65 cm) sorry did not brush it clean before the photo In addition to the one above I found two Hadrosaur jaws in SD from an Edmontosaurus. Both jaws are laying vertically, teeth side in against the wall. Typically they do not have teeth but until the prep is complete hard to say. One was from a Juvie about 20" (19 cm) and the other from a very young animal +13" (33 cm) which is pretty rare for this site. My initial view of the larger one was to expose the ascending ramus ( hinge) Here is the small jaw - preservation of the hinge area was not good but needed to collect it because of size. No teeth present.
  13. Hell Creek Metatarsal Joint Fragment

    Hey everyone, I recently came across this fossil online. It was listed as a metatarsal joint fragment, which to me checks out, but the person further identified it as a Dromaeosaurid [though they didn't specify based on what characters] and tentatively assigned it to Dakotaraptor based on size. Now I was wondering: Can remains this fragmental even be reliably distinguished from the other small- to medium-sized theropods in Hell Creek? The fossil was found in Hell Creek deposits in Wyoming [no info on the exact location], measures 30.9 x 27.5mm [not specified along which sides], and weighs 252 grams. Thank you for any input on this!
  14. Rex Toe Bone?

    Hey everyone, I recently purchased this toe bone and the seller identified it as an Edmontosaurus, but now I’m thinking it might be a bit to big to be Edmontosaurus. I was thinking it might be from a bigger animal, like Tyrannosaurus Rex. The bone is about 4 inches long and 2 inches wide. It was found in the Hell Creek Formation in Montana. Any help is appreciated! Thanks!
  15. Hell Creek Avian Tooth

    This is a pretty interesting tooth and I figured I would post it here to get some additional thoughts. This is labeled as an Avisaurus tooth from Garfield County Montana, Hell Creek formation. The first thing that stood out to me was that the shape was a bit different than most teeth labeled Avisaurus that I have seen. Granted I have not seen many but this looked different. It is also close to 1/4" which seems quite large for an Avisaurus. Since there are several Enantionithean birds from Hell Creek, it could be from one for sure but could it be something else? I did some research and found photos on line of a jaw fragments from an Ichthyornis from Kansas that had a similar looking tooth. I am talking general shape really, not saying that is what this is. I also found a comparative study of Hesperornis and Ichthyornis teeth on line and it has a similar shape to one of the Hesperornis teeth in that study. I am very unfamiliar with Avian teeth so I am strictly going by what little research I could find on line. I know there are a couple of Hesperorniformes and an unnamed Ichthyornithean from Hell Creek so it is possible that this tooth belongs to a bird that is not an Enantionithean but I thought this is an ideal tooth to put on the forum and seek some help from those with far more knowledge. Any comments, insights, or thoughts ?
  16. Need Help IDing Hell Creek Dino Bone

    I have a fossil found in the Hell Creek Formation in South Dakota. Through studying I have not found a bone that matches mine in any known Hell Creek dinosaur. The bone is 8 1/4 inches tall, 5 inches long, and a width of 1 3/4 inches. The fossil weighs 2 lbs and 14.2 ounces. My belief is that it is from an ornithischian, possibly a ceratopsian or an ornithopod. It has a large hole in it for bone marrow, and at first glance looks like a human hip bone. Please help ID my fossil! Thanks!!!! -Carnoraptor
  17. Just got back from a trip to the badlands of Montana and South Dakota in the Hell Creek Formation.. Here are some photos of some of the bones I picked up at an Edmontosaurus site. My hope was to collect specimens fitting in a shoebox and I was fairly successful at that which was quite surprise since you dont get to choose what you find. The site is faily large and the area I was collected had about 6 foot of overburden removed a couple of years ago so there was only 12 inches left before I hit the layer. The layer in this area is about 17 to 20 inches thick, white lines. Nothing is prepped at this point, lots of work in front of me but here are the raw photos before beautification Foot Bones - numbers correspond to my finds #1 Juvenile Metatarsal - IV #2 Phalanx II-2 Ventral view #3 Phalanx IV not yet sure which one #3 Another Phalanx IV bone #4 Ungual Digit III... found two close match to each other #4 Ungual Juvie think its Digit IV but I need to verify after prepping
  18. Hell creek small theropod bone?

    I was recently going through some old finds from last summer when I came across this little bone, it is partially hollow and has very porous bone structure. that's why I assume this bone came from a very small theropod. It shares some resemblance to a bambiraptor coracoid as shown in the last picture and is almost exactly the same size. the bone measures 11mm wide in the first picture
  19. Help with interpreting fossils

    Hi, Brand new to the site. Any help would be appreciated. I am a 6th grade Science teacher in suburban St. Louis. About 8 years ago I attended a dig with the St. Louis Science center to the Hell Creek formation outside of Jordan, Montana. I brought several fossils home to use in my classroom. I would love to get more information about them. My students absolutely love hearing about them and the more details the better! The first set of images was identified as being part of Triceratops frill. I can see the blood grooves in the bone. There also appears to be fossilized blood vessels on the surface of the bone. One starts at one side of the frill, travels through the frill and comes out the other side. Can blood vessels fossilize? Am I interpreting that correctly? Also on the "back" side of the fossil there appears to be a lot of dark almost granular material. At first I thought it was something organic (lichens) from the site where I found it. It is definitely fossilized and not something I can scrape off. Any ideas what that is? The second fossil is still unidentified. I was not able to get information about it on our trip from the paleontologist. Any information would be awesome! Thank you!
  20. Very cool article on a Hell Creek Fm bonebed in Bowman, North Dakota A meteor impact 66 million years ago generated a tsunami-like wave in an inland sea that killed and buried fish, mammals, insects and a dinosaur, the first victims of Earth’s last mass extinction event. The death scene from within an hour of the impact has been excavated at an unprecedented fossil site in North Dakota. (Graphics and photos courtesy of Robert DePalma) https://news.berkeley.edu/2019/03/29/66-million-year-old-deathbed-linked-to-dinosaur-killing-meteor/
  21. Updated 1/17/20 I've taken a pretty firm position on the validity of Nanotyrannus ever since I spent some time looking at the Dueling Dinosaurs shortly after they were discovered. Subsequent to that, new information that I've become aware of just cemented my position. I'm interested in understanding the "truth" and have no problem looking at all available specimens that are in private hands or museums. The optics are very clear to me and I have difficulty understanding the debate. Collectors need to form their own opinion on this but I would like to share with you why I believe its a valid species. A recent paper that CLAIMS that Jane and Petey are still growing that they have to be T Rex is ridiculous. WHY? Just because they are growing.... We have no idea what stage in their life cycle they were and obviously they are not adults. Nano's grow, we have no idea how large, and have similar life cycles has do T rex's. If it was not for all the other supporting evidence to validate Nanotyrannus it might make sense but the claim is nonsensical. I present here several examples supporting my case, many others exist but will leave it at this. You always hear we need see sub-adult/baby specimens of Trex so a comparison can be make against Nanotyrannus claimed specimens. Shocking but some specimens do exist in institutions and private hands. Included in this discussion are a couple of examples of these specimens other are out there some in private hands and hopefully will be published. Jaws Case in point here is a jaw of a Baby T rex in private hands. Its only 35 cm wide. Paleontologists involved in this debate are very well aware of its existence. This cast is in my collection Top jaw: T rex (BHI6439), White jaw: Nanotyrannus (BMPR2002.4.2) Note that the length of the tooth row is nearly identical, Top jaw contains 12 circular alveloi typical of adult T rex's while the white jaw contains 17 rectangular alveloi typical of what is described as Nanotyrannus. Morphology of the teeth is classic for Trex: fat, oval and robust. Morphology of white jaws teeth is classic for Nanotyrannus: rectangular, lean and more gracile. There are a number of other morphological differences that Pete Larsen has identified with the jaws but the eye test should be enough for this discussion Compare the widths for both of these species, there is no comparison its pretty obvious how robust one is over the other. ARMS If the Jaws were not enough here are the arms and claws. Here is a sub-adult Trex arm (UCRC-PV1) housed at the University of Chicago (Paul Sereno). Paleontologists involved in this debate are very well aware of its existence. This is the only complete Trex arm and hand that has been found to date and articulated including the scapula and coracoid and partial skeleton including vertebrae. The bones including the claws compare well with those of known adult T rex and the vertebrae are about twice the size of Jane (Nanotyrannus) Added (1/7/20) Pete Larsen : "Adult and sub adult hands of T.rex (A, B and D) compared to the hand of Nanotyrannus (C), BHI 6437, which has a skull length of 610mm, the same as Jane BMRP2002.4.1." How can the rational paleontologists support the papers claim B is a Sub-Adult T rex (UCRC PV1) who's bones look just like D from an adult T rex.(MOR 555) C bones a Nanotyrannus is larger with very different bone morphology Every known bone from the hand of a Nanotyrannus is larger than and morphologically different from every known hand bone of adult or sub-adult T rex. I'm not aware of any other Tyrannosaurid where juvie and adult arms become smaller as the animal ages. Here is an sketch comparing the two to see how different the bones are. Pete Larsen also points out that "Animals do not change the orientation of semicircular canals, imbedded within solid bone, as they grow" Compare the long bone of Nanotyrannus with arrow to the one below on T rex Sue Sue - Carpal is much shorter and with a different morohology... Here is a comparison of a carpal digit I Wyrex (Top), Nanotyrannus (Middle), Sue (Bottom) Both Trex's have a larger bulge at the end of the bone. Very different morphology. You can argue ontogenetic changes but the robustness is present in the arm from above. Added 1/17/20 From left to right : Gorgosaurus TVM 2001.89.1, Nanotyrannus BHI-6437, adult T.rex MOR-980, and sub adult T.rex TCM 2001.90.1. Your can see on similarities with the two on the right both of Trex of different ages. Interesting thought the paleontologists said the younger one should be longer CLAWS Lets move on to the claws - Top T rex Digit I - Sue (Left), Digit II - Victoria (Right) Bottom Nanotyrannus - Digit I (Left), Digit II (Right) (BMRP 2006.4.4) (Petey's) Morphology is very different and Digt II of Victoria is very similar to that of the sub adult claw see below. Sub Adult Trex claw Digit II, 5 cm .. compares quite well to adult Victoria not Nanotyrannus Lots of the photos provided by Peter Larsen Added 1/7/20 Pete recently posted "But wait, you say. wasn’t Jane still growing? She certainly was, comparing Jane size BHI-6437’s manus claws ( Brown) to Petey’s (BMRP 2006.1.1) (White). The question I have is: when do the hands stop growing so they can shrink (a lot) and then begin growing again?" Braincase One last item to present is the Witmer Labs study on Tyrannosaurid braincases...it clearly demonstrates that there is a difference between T-rex and Nanotyrannus. Conclusion on the Cleveland "Nano" skull "Given the obvious closeness of CMNH 7541 and BMR P2002.4.1 "Jane", it would likely have been taxonomically decisive. Our data on CMNH 7541 may be taken as evidence for the validity of N. lancensis on the grounds that it is ‘‘too different’’ from T. rex. However, we are hesitant to argue that the debate over its status is settled for the simple reason of sample size. CMNH 7541 presents one specimen—one highly divergent specimen. Although we see no clear signs of distortion or pathology in the braincase, its divergent nature concerns us, and we maintain that the possibility remains that future discoveries will show CMNH 7541 to be aberrant. For that reason, we urge caution and continue to regard the specimen’s status as open" https://onlinelibrary.wiley.com/doi/full/10.1002/ar.20983 New Insights Into the Brain, Braincase, and Ear Region of Tyrannosaurs (Dinosauria, Theropoda), with Implications for Sensory Organization and Behavior Lawrence M. Witmer Ryan C. Ridgely First published: 26 August 2009 https://doi.org/10.1002/ar.20983 It's unfortunate that the skeleton Jane does not have the two skeletal areas discussed in this topic: Arms and Braincase. More reason for the Dueling Dinosaur Nanotyrannus to be studied it's almost a complete skeleton. The End...
  22. I have been working hard lately on all of our programs and we are very close to having the dinosaur presentation I want us to have. We have a name for this program, Dinos Rock. Yes it is not super creative but for 2nd graders, this is a geology themed program. For 3rd graders, it is adaptation based but the name works. We have added some pieces that gives us more than a few teeth. Nothing museum quality or anything but a few bones help the visual factor. I have been studying the biology, geology and ecology of dinosaurs so the science will be good. my son is working on the art but we wont have any done soon, he has school projects a head of this. We are close to being ready a full 6 months before I thought we would be. Hell Creek was going to be a focus for us because the fossils are available and this is the fauna that most kids will recognize. If you are willing to look hard, you can also find some real bargains from this formation. We turned a lot of early attention collecting attention to Hell Creek dinosaurs and I am actually really happy with where we are at with the fossil material we have. There is a lot of room to add and maybe upgrade in the future but this is a good start. This is the famous T-Rex and Triceratops fauna and we started our collection with those critters. Very early on, we were able to get a few Hell CreekTriceratops teeth. I am very happy that through a purchase from TFF member, we added two frill pieces. They are Lance formation but we are not covering the Lance formation yet so they will be used here. I also added a frill piece from Hell Creek. The kids will get to touch the largest frill piece which is a great bonus. An iconic dinosaur and I think well represented. Also early on, we stumbled into a great bit of a luck. A TFF member saw a post of ours and passed it on to another TFF member who sold us a beautiful Tyrannosaurus Rex partial tooth and gave us a really nice Nano too. It was very affordable and a generous gift was added that gave us nice pieces from the most famous dinosaur ever. The rock star really. I was not sure we would be able to get a decent example at all but to do it right off the bat was HUGE. This would not have happened if not for the members that decided to help us out. We are extremely grateful The first dinosaur fossil we got were two Hell Creek Edmontosaurus teeth that were a gift. We acquired a nice jaw fragment in a trade. I am a bargain shopper with a limited budget so I LOVE our Edmontosaurus as it has not cost much at all. I named this display Eddie I like it so much lol Hadrosaurs are important dinosaurs to talk about and I think a fair amount of kids may not know about them. I would like to add another bone later too. They seem attainable for us. Acheroraptor was behind only T-rex on the my list and we got a really beautiful tooth and it was another bargain pick up. I will talk a lot about this species and I will get deep into the biology/ecology of this awesome dino because I love Dromaeosaurids. Raptors are also an iconic dinosaur that kids love and this is a relatively new species which is another fun thing to discuss with the kids. We will also be introducing the kids to a theropod they have never heard of, Richardoestesia gilmorei. I have told me son to envision a toothed Cormorant type dinosaur as I lean toward them being a fish eater. It is pretty cool to get a Hell Creek dino that they will not know anything about. We have yet to add a Thescelosaurus fossil but we will before we start presenting. I want to add another piece of the fauna and it seems this is the most inexpensive option we will have. It will also give the kids another dinosaur they probably do not know and it will round out the basic Hell Creek fauna. There is no shortage of dinosaurs that we can add either. An Anky or Nodosaur scute is way up on the program list of fossils for me and hopefully we can find one from this formation. Dakotaraptor is #1 on my personal list and I will get one eventually. A Troodontid is also very high on the list as well. I know eventually i will also pick up an Ornithominid too. All three of these are more expensive so we will have to save and wait but each one would also make awesome educational dinosaurs. I also really want to add an Avian fossil. I have not researched this but my guess is they are very rare. Leptoceratops is another species I would love to add at some point too. They are really cute and kids will dig them. Anyway, here are some of the fossils. I think we have a good start going to our Hell Creek collection and I am looking forward to taking these to work with me very soon. Pic 1- Triceratops teeth and Eddie Pic 2- T-Rex, Nano, and Hell's Thief. I am so happy to have these fossils. Pic 3- One of the frill pieces. This one will end up in a larger Trike display with more teeth and another frill. Plus we will have nice frill for kids to check out too.
  23. I have no idea what this could be, any help would be appreciated. Found near Harding County, South Dakota.
  24. Hell Creek Formation Rooted Tooth ID

    I recently purchased this tooth from a collector at the Tucson Gem and Mineral Show. He wasn't sure if the tooth was Pachy or Thescelosaur but upon looking at it more closely I'm not even sure if it isn't some sort of Ankylosaur. Any help would be great. The tooth was found in the Hell Creek Formation Perkins County, SD. Thanks! Ryan
  25. My son and I recently started an education non-profit using fossils. Since the little kids love dinosaurs, we decided to include them in our programs. I do not know much about Dinosaur fossils but I am trying learning on the fly. There is no way we can pick up a full tooth or large bone from a T-Rex. our purchasing power is limited. I did find a dealer that has several partial teeth or tooth shards listed as T-Rex. They are affordable for us and did come from Hell Creek. I am apprehensive about buying any of them though because I do not want to drop any money on something called a T-Rex unless I can be fairly certain that is what it is. I do not possess enough knowledge to ID a partial tooth nor do I know if you even can correctly identify a tooth shard. I will put to this those here with far more knowledge than I have.... Can you ID a tooth shard as T-Rex and if that is possible, what would you look for ? Thank you in advance for any help that I can get
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