Jump to content

Search the Community

Showing results for tags 'tyrannosaurus rex'.



More search options

  • Search By Tags

    Type tags separated by commas.
    Tags should be keywords or key phrases. e.g. carcharodon, pliocene, cypresshead formation, florida.
  • Search By Author

Content Type


Forums

  • Fossil Discussion
    • General Fossil Discussion
    • Fossil Hunting Trips
    • Fossil ID
    • Is It Real? How to Recognize Fossil Fabrications
    • Partners in Paleontology - Member Contributions to Science
    • Questions & Answers
    • Fossil of the Month
    • Member Collections
    • A Trip to the Museum
    • Paleo Re-creations
    • Collecting Gear
    • Fossil Preparation
    • Member Fossil Trades Bulletin Board
    • Member-to-Member Fossil Sales
    • Fossil News
  • Gallery
  • Fossil Sites
    • Africa
    • Asia
    • Australia - New Zealand
    • Canada
    • Europe
    • Middle East
    • South America
    • United States
  • Fossil Media
    • Members Websites
    • Fossils On The Web
    • Fossil Photography
    • Fossil Literature
    • Documents

Blogs

  • Anson's Blog
  • Mudding Around
  • Nicholas' Blog
  • dinosaur50's Blog
  • Traviscounty's Blog
  • Seldom's Blog
  • tracer's tidbits
  • Sacredsin's Blog
  • fossilfacetheprospector's Blog
  • jax world
  • echinoman's Blog
  • Ammonoidea
  • Traviscounty's Blog
  • brsr0131's Blog
  • brsr0131's Blog
  • Adventures with a Paddle
  • Caveat emptor
  • -------
  • Fig Rocks' Blog
  • placoderms
  • mosasaurs
  • ozzyrules244's Blog
  • Sir Knightia's Blog
  • Terry Dactyll's Blog
  • shakinchevy2008's Blog
  • MaHa's Blog
  • Stratio's Blog
  • ROOKMANDON's Blog
  • Phoenixflood's Blog
  • Brett Breakin' Rocks' Blog
  • Seattleguy's Blog
  • jkfoam's Blog
  • Erwan's Blog
  • Erwan's Blog
  • Lindsey's Blog
  • marksfossils' Blog
  • ibanda89's Blog
  • Liberty's Blog
  • Liberty's Blog
  • Back of Beyond
  • St. Johns River Shark Teeth/Florida
  • Ameenah's Blog
  • gordon's Blog
  • West4me's Blog
  • West4me's Blog
  • Pennsylvania Perspectives
  • michigantim's Blog
  • michigantim's Blog
  • lauraharp's Blog
  • lauraharp's Blog
  • micropterus101's Blog
  • micropterus101's Blog
  • GPeach129's Blog
  • nicciann's Blog
  • Olenellus' Blog
  • nicciann's Blog
  • maybe a nest fossil?
  • Deep-Thinker's Blog
  • Deep-Thinker's Blog
  • bear-dog's Blog
  • javidal's Blog
  • Digging America
  • John Sun's Blog
  • John Sun's Blog
  • Ravsiden's Blog
  • Jurassic park
  • The Hunt for Fossils
  • The Fury's Grand Blog
  • julie's ??
  • Hunt'n 'odonts!
  • falcondob's Blog
  • Monkeyfuss' Blog
  • cyndy's Blog
  • pattyf's Blog
  • pattyf's Blog
  • chrisf's Blog
  • chrisf's Blog
  • nola's Blog
  • mercyrcfans88's Blog
  • Emily's PRI Adventure
  • trilobite guy's Blog
  • xenacanthus' Blog
  • barnes' Blog
  • myfossiltrips.blogspot.com
  • HeritageFossils' Blog
  • Fossilefinder's Blog
  • Fossilefinder's Blog
  • Emily's MotE Adventure
  • farfarawy's Blog
  • Microfossil Mania!
  • A Novice Geologist
  • Southern Comfort
  • Eli's Blog
  • andreas' Blog
  • Recent Collecting Trips
  • retired blog
  • Stocksdale's Blog
  • andreas' Blog test
  • fossilman7's Blog
  • Books I have enjoyed
  • Piranha Blog
  • xonenine's blog
  • xonenine's Blog
  • Fossil collecting and SAFETY
  • Detrius
  • pangeaman's Blog
  • pangeaman's Blog
  • pangeaman's Blog
  • Jocky's Blog
  • Jocky's Blog
  • Kehbe's Kwips
  • RomanK's Blog
  • Prehistoric Planet Trilogy
  • mikeymig's Blog
  • Western NY Explorer's Blog
  • Regg Cato's Blog
  • VisionXray23's Blog
  • Carcharodontosaurus' Blog
  • What is the largest dragonfly fossil? What are the top contenders?
  • Hihimanu Hale
  • Test Blog
  • jsnrice's blog
  • Lise MacFadden's Poetry Blog
  • BluffCountryFossils Adventure Blog
  • meadow's Blog
  • Makeing The Unlikley Happen
  • KansasFossilHunter's Blog
  • DarrenElliot's Blog
  • jesus' Blog
  • A Mesozoic Mosaic
  • Dinosaur comic
  • Zookeeperfossils
  • Cameronballislife31's Blog
  • My Blog
  • TomKoss' Blog
  • A guide to calcanea and astragali
  • Group Blog Test
  • Paleo Rantings of a Blockhead
  • Dead Dino is Art
  • The Amber Blog
  • TyrannosaurusRex's Facts
  • PaleoWilliam's Blog
  • The Paleo-Tourist
  • The Community Post
  • Lyndon D Agate Johnson's Blog
  • BRobinson7's Blog
  • Eastern NC Trip Reports
  • Toofuntahh's Blog
  • Pterodactyl's Blog
  • A Beginner's Foray into Fossiling
  • Micropaleontology blog
  • Pondering on Dinosaurs
  • Fossil Preparation Blog
  • On Dinosaurs and Media
  • cheney416's fossil story
  • jpc
  • Red-Headed Red-Neck Rock-Hound w/ My Trusty HellHound Cerberus
  • Red Headed
  • Paleo-Profiles
  • Walt's Blog
  • Between A Rock And A Hard Place
  • Rudist digging at "Point 25", St. Bartholomä, Styria, Austria (Campanian, Gosau-group)
  • Prognathodon saturator 101

Calendars

  • Calendar

Categories

  • Annelids
  • Arthropods
    • Crustaceans
    • Insects
    • Trilobites
    • Other Arthropods
  • Brachiopods
  • Cnidarians (Corals, Jellyfish, Conulariids )
    • Corals
    • Jellyfish, Conulariids, etc.
  • Echinoderms
    • Crinoids & Blastoids
    • Echinoids
    • Other Echinoderms
    • Starfish and Brittlestars
  • Forams
  • Graptolites
  • Molluscs
    • Bivalves
    • Cephalopods (Ammonites, Belemnites, Nautiloids)
    • Gastropods
    • Other Molluscs
  • Sponges
  • Bryozoans
  • Other Invertebrates
  • Ichnofossils
  • Plants
  • Chordata
    • Amphibians & Reptiles
    • Birds
    • Dinosaurs
    • Fishes
    • Mammals
    • Sharks & Rays
    • Other Chordates
  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

Found 68 results

  1. Hell Creek Claw ID - Dakotaraptor?

    Hi everyone! I have a large claw from the Hell Creek Formation of Harding County, South Dakota that I was hoping to have help identifying. It is large enough that I initially believed it stood a chance at being tyrannosaurid, but it seems a bit more compressed than tyrannosaur claws I’ve worked with in the past - particularly on the lower ridge. The ventral surface of the claw is also distinctly flat rather than rounded, which seems unusual. Could this be a Dakotaraptor claw or is that just wishful thinking? Large Anzu perhaps? It is right around 1.75 inches across the length of the claw (sorry, no metrics on this ruler). I have referred to the incredible guide posted by Troodon, and have some experience with various claws, but I still can’t quite come to a conclusion on this one. What are your thoughts? Thanks in advance!
  2. T. rex posterior dentary tooth

    From the album Dinosaurs

    A high-quality replica of Stan's posterior right dentary tooth. About 4.5" in length.
  3. T. rex ontogenetic comparison

    From the album Dinosaurs

    Two teeth from Tyrannosaurus rex at different growth stages. The adult is a replica of a posterior right dentary tooth of Stan. The baby/juvenile is also a posterior tooth (about 6 mm long), found in the Hell Creek Fm. (more info: http://www.thefossilforum.com/index.php?/collections-database/chordata/dinosaurs/baby-t-rex-tooth-r1992/). It could also be a dentary tooth based on the wear patterns, but I'm not sure.
  4. T. rex posterior dentary tooth mesial carina

    From the album Dinosaurs

    Posterior dentary tooth replica from Stan the T. rex (11th from front). Note there is a slight "twist" of the mesial carina in this specimen.
  5. T. rex posterior dentary tooth distal carina

    From the album Dinosaurs

    Posterior dentary tooth replica from Stan the T. rex (11th from front).
  6. Baby Tyrannosaurus rex

    From the album Dinosaurs

    Posterior baby/juvenile T. rex tooth. Hell Creek Formation Carter Co., MT, USA Fossil in TFF collections: http://www.thefossilforum.com/index.php?/collections-database/chordata/dinosaurs/baby-t-rex-tooth-r1992/ This tooth is also very similar to a few in the collection of @Troodon: http://www.thefossilforum.com/index.php?/topic/57402-my-jurassic-park-hell-creeklance-tyrannosaurs/
  7. From the album Dinosaurs

    A juxtaposition of the bases of two juvenile Tyrannosaurid tooth crowns from the Hell Creek Formation. Nanotyrannus: Dawson Co., MT Tyrannosaurus: Carter Co., MT
  8. I was out yesterday doing a final hunt before the snow sets in here in Montana on the Judith River formation and found this claw along with this vertebra, no other bones around so possibly from the same animal. I have found theropod claws that are much smaller and this one is huge when compared. I searched for the tip but sadly couldn't find it. I assume because of the size it would be a tyrannosauroid but not certain. Can it be determined to be a toe claw or hand claw? Is the vertebra identifiable? @patrickhudson
  9. Tyrannosaurus rex serrations collage

    From the album Dinosaurs

    To me, serrations are such a fascinating tool. They were independently evolved many times in many different animals. They concentrate force into smaller points (increasing the pressure = Force/Area) so that the thing being bitten would break or cut along the line of serrations. They also are great for "sawing" through things such as muscle. T. rex definitely made great use of this adaptation. Topmost (greyscale) image from "Physical evidence of predatory behavior in Tyrannosaurus rex:" https://www.researchgate.net/publication/249649164_Physical_evidence_of_predatory_behavior_in_Tyrannosaurus_rex Most of the pictures (color) in this collage are from two associated fragments of what I am certain was a T. rex tooth from the Hell Creek Fm., SD based on the size and shape of the serrations. The images with the scale markings have been scaled to match each other. More on theropod serrations: "Developmental and evolutionary novelty in the serrated teeth of theropod dinosaurs:" https://www.nature.com/articles/srep12338
  10. Stan T. rex tooth replica (2)

    From the album Dinosaurs

    Closeup shot of the distal serrations.
  11. Stan T. rex tooth replica (1)

    From the album Dinosaurs

    A high-quality replica of Stan's 2nd maxillary tooth. About 11.5" in length. Displayed with a 3D-printed stand I designed.
  12. T. rex tooth chunk

    From the album Dinosaurs

    A small piece of (probably) rex tooth from the Lance Creek Fm., WY. Shown next to a replica for comparison.
  13. Hello, I was doing a study on the T. rex and Nanotyrannus teeth specimens I had, and I wanted to compare them against a list of known T. rex teeth with measurement. The paper: Dental Morphology and Variation in Theropod Dinosaurs: Implications for the Taxonomic Identification of Isolated Teeth (JOSHUA B. SMITH, DAVID R. VANN, AND PETER DODSON) contains a list of 115 T. rex teeth. To make it easier to compare and read the data, I combined the measurements into a single chart, added colors and lines for ease of reading, and added the size and names of the T. rex used in the study Feel free to refer to the below chart for T. rex teeth measurements. I had to split the chart into 2 due to size limitations, but if you want the full-sized PDF version (25 MB), please message me so I can send it to you by email. If you have any suggestions to improve readability, or have your own data to add, go ahead and post it here! I will be posting pics and measurements of my various T. rex and Nanotyrannus teeth here @Troodon
  14. I read somewhere in a paper by Jack Horner, that G-Rex was said to be around 16 years old when it died using bone histology. In the same paper it said that it was shown by LAG intervals that G-Rex would've continued to grow for 2-3 more years had it not died. This means that the infamous G-Rex was a sub-adult. Jack Horner's Paper: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.515.6451&rep=rep1&type=pdf This got me curious on how big exactly was G-Rex? What was its height, length, and weight? I tried googling the answers for these but to not avail as people seldom mention G-Rex all that often and there are no skeletal models or mounted skeletons. Can someone tell me why this is? And what is the true size of G-Rex.
  15. How strong could a t-rex's bite force be? What modern day animals could it compare it's bite force to?
  16. Wow its already the 17 of January where has the year gone? Well always time for some cool photos of some great fossils to keep us going Its not unheard of to find dinosaur bite marks on a fossil. This Triceratops pelvis on display at Museum of the Rockies has Tyrannosaurus bite marks on it (red arrows) One way to identify a theropod bone is to see if they are hollow, another way is to look at their vertebra most are pneumatized, have a honeycomb structure. Here is an example of a T rex vertebra You hear alot about the Nanotyrannus associated with the Dueling Dinosaurs but here is a photo of the foot of other partner in this dynamic due a Triceratops. Complete ceratopsian feet are rare and this is the ventral view of one. in the less prepped version Mike Tribold posted this photo of Axestemys infernalis, a new soft shelled turtle from the Hell Creek Formation. I am sure Mike will have it on display at his booth at the Tucson 22nd Street Show More info on this turtle can be found here https://palaeo-electronica.org/content/2019/2827-a-new-species-of-trionychid The lower jaw of the pterosaur Liaodactylus, with its numerous and extremely slender teeth. At 160 million years old, this is the earliest evidence of adaptations for filter-feeding in pterosaurs. Info by Jordan Bestwick Check out these loooong flight feathers on the wings of Confuciusornis sanctus. Courtesy of Talia Lowi-Marri Palaeontological Institute in Moscow gives us the rather mean-looking Archosaurus rossicus, from the very end of the Permian (~255 Mya) in Russia. Skull is a bit under half a meter long. Not something you want to meet hiking in Siberia. The Supraorbital horn of Baby and Juvenile Triceratops (or Torosaurus), courtesy of the BHI Carnotaurus sastrei, original holotype skull. photo by Damian Perez Tom Holtz shared a different view of the Tyrant King skull From the Smithsonian's NMNH Deep Time exhibit, a beautiful Gorgosaurus libratus skull Here is a photo that compares different Tyrannosaurid finger bones digit I-1. 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 photo P. Larsen
  17. Mechanisms of soft tissue and protein preservation in Tyrannosaurus rex Elizabeth M. Boatman, Mark B. Goodwin, Hoi-Ying N. Holman, Sirine Fakra,Wenxia Zheng, Ronald Gronsk & Mary H. Schweitzer NATURE Scientific Reports | (2019) 9:15678 | https://doi.org/10.1038/s41598-019-51680-1 natu about 9 MB
  18. Tyrannosaurus rex or nanotyrannus

    Hey everyone....im gonna start posting everything i have over the next few weeks to get everyones opinions.....if i need to post more info about a specimen just let me know.....first up is a tooth tip i got ...it was labled t- rex or nanotyrannus......from hell creek.
  19. Is nanotyrannus valid?

    Hello everyone, I know this is a big scientific debate and I have researched about it but I haven't come to a conclusion. What do you think? Thank you
  20. T rex or nanotyrannus teeth

    Hello everyone, after having seen many pictures of "nanotyrannus" and t rex teeth i have some questions. The first one being, how can paleontologists distinguish nano teeth from rex teeth and also sell them for a different price when the current theory is that they are the same dinosaur, also in many cases I have seen nano teeth with the same size as t rex teeth differentiated, so if they are the same dinosaur how can this be possible? Thank you for your time.
  21. On Saturday Oct 5, Tyrannosaurus rex celebrated its 114 birthday when it was formally named by H F Osborne in his 1905 paper: Osborn, H. F. (1905). "Tyrannosaurus and other Cretaceous carnivorous dinosaurs". Bulletin of the AMNH. 21 (14): 259–265. hdl:2246/1464. Retrieved October 6, 2008. One little known fact was that Albertosaurus sarcophagus was also formally named on the last page of that paper based on this skull.
  22. I've just received this weird little tooth from the Hell Creek Formation. It was sold to me as a Dromaeosaur premax tooth but I have my doubts as it's quite robust. That said, the other candidate would be a Tyrannosaur and I've never seen a premax tooth with a twist like this. What's more, the carinae are strange - one has nice crisp serrations (I thought they looked a lot like Tyrannosaur serrations) while the other is smooth (it doesn't look like it ever had any serrations). Anyone have any idea what it might be?
  23. My Collection

    New to collecting and this site, thought I’d debut my small collection in my first post. Any comments or tips would be appreciated.
  24. Hello All, I'm new to fossil collecting as well as this forum. I'm looking to pick up a T Rex tooth and came across the one in the attached images. I'm just wondering if you could help me verify that it is genuine? It comes from the Hell Creek formation so I believe it is, I just wanted to be sure. Also, if anyone has any reputable sources for T Rex teeth, that would be great to know as well (PM). Thanks in advance!! -Derek
×