Search the Community
Showing results for tags 'Utahraptor'.
-
Giant Dromaeosaurs and other Eumaniraptora from the Cretaceous period
Joseph Fossil posted a topic in General Fossil Discussion
The Eumaniraptora is a clade of non-avian theropod dinosaurs that first emerged during the late Jurassic period and diversified extensively during the subsequent Cretaceous period (143-66 Million years ago). This group is most famously known as the Raptor dinosaurs (the sister clade of the theropod dinosaurs that gave direct rise to the birds), consisting of mostly small to mid sized theropod dinosaurs. There are a few species though that exceed the typical small-medium size range for the raptor dinosaurs. Only a few giant raptor dinosaurs are currently known. But recent discoveries over the past few decades have demonstrated large raptor dinosaurs were less of an exception in Cretaceous ecosystems than previously thought. Here is a list of all the currently known giant Eumaniraptora from the fossil record which hopefully can expand our understanding the vital roles these animals played in the ecosystems they once inhabited. Let me know if I forgot any examples. South America Austroraptor cabazai (Dromaeosauridae - Argentina, South America) (Late Cretaceous (78-66 Million Years ago)) (grew up to 6 meters (20 feet) in length) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2679073/ Antarctica Imperobator antarcticus (Eumaniraptora - part of what is now James Ross Island, Antarctica) (Late Cretaceous (71 Million Years ago)) (grew up to 4 meters (13 feet) in length, note: did not have the iconic pair of sickle shaped claw on its feet like most other Eumaniraptora) https://www.sciencedirect.com/science/article/abs/pii/S0195667118300120?via%3Dihub Asia Achillobator giganticus (Dromaeosauridae - part of what is now Mongolia, Asia) (Late Cretaceous (96-89 Million Years ago)) (grew up to 5 meters (16 feet) in length) Perle, A.; Norell, M. A.; Clark, J. M. (1999). "A new maniraptoran Theropod−Achillobator giganticus (Dromaeosauridae)−from the Upper Cretaceous of Burkhant, Mongolia". Contributions from the Geology and Mineralogy Chair, National Museum of Mongolia (101): 1−105. Unnamed Bissekty Formation Giant Dromaeosauridae (Dromaeosauridae (could possible be a species of Itemirus) - part of what is now Uzbekistan, Asia) (Late Cretaceous (92-90 Million Years ago)) (based on Specimens CCMGE 600/12457, ZIN PH 11/16, grew up to 5.5 meters (18 feet) in length) https://www.researchgate.net/publication/263891965_Dromaeosauridae_Dinosauria_Theropoda_from_the_Bissekty_Formation_Upper_Cretaceous_Turonian_of_Uzbekistan_and_the_phylogenetic_position_of_Itemirus_medullaris_Kurzanov_1976 https://www.cambridge.org/core/journals/geological-magazine/article/abs/giant-dromaeosaurid-theropod-from-the-upper-cretaceous-turonian-bissekty-formation-of-uzbekistan-and-the-status-of-ulughbegsaurus-uzbekistanensis/4543ABAB1EC19C84405EDF66A5F53124 Europe Unnamed Wessex Formation Giant Dromaeosauridae (Dromaeosauridae (specimens for this species could belong to Vectiraptor) - Isle of Wight, Great Britain, Europe) (Early Cretaceous (125 Million Years ago)) (based on Specimens IWCMS.2002.1, IWCMS.2002.3, IWCMS.2002.4., and BMNH R 16510, grew up to 5.5 meters (18 feet) in length) https://www.researchgate.net/publication/222830089_The_first_record_of_velociraptorine_dinosaurs_Saurischia_Theropoda_from_the_Wealden_Early_Cretaceous_Barremian_of_southern_England https://www.sciencedirect.com/science/article/abs/pii/S0195667121003712 Unnamed Giant Dromaeosauridae (Dromaeosauridae - Gorodishchenskii District Russia, Europe) (Late Cretaceous (72.1-66.0 Million Years ago)) (based on Specimen VGI. no. 231/2, grew up to 5.8 meters (19 feet) in length) https://www.researchgate.net/publication/235806763_Carnivorous_dinosaurs_Saurischia_Theropoda_from_the_Maastrichtian_of_the_Volga-Don_Interfluve_Russia North America Utahraptor ostrommaysi (Dromaeosauridae - Western North America) (Early Cretaceous (135-130 Million Years ago)) (grew up to 5.5 meters (18 feet) in length) https://www.researchgate.net/publication/285714464_A_large_dromaeosaur_Theropoda_from_the_Lower_Cretaceous_of_eastern_Utah Dakotaraptor steini (Dromaeosauridae - Western North America) (Late Cretaceous (66 Million years ago)) (grew up to 5.5 meters (18 feet) in length) https://www.researchgate.net/publication/283655219_The_first_giant_raptor_Theropoda_Dromaeosauridae_from_the_Hell_Creek_Formation Unnamed Marshalltown Formation Giant Dromaeosauridae (Dromaeosauridae - Eastern North America) (Late Cretaceous (72.1 Million Years ago)) (based on Specimen NJSM 14158, grew up to 5.5 meters (18 feet) in length) https://www.researchgate.net/publication/327117985_The_distinctive_theropod_assemblage_of_the_Ellisdale_site_of_New_Jersey_and_its_implications_for_North_American_dinosaur_ecology_and_evolution_during_the_Cretaceous https://terpconnect.umd.edu/~gdouglas/raptor/index.html Unnamed Tar Heel Formation Giant Dromaeosauridae ((Dromaeosauridae - Eastern North America) (Late Cretaceous (78.5-77.1 Million Years ago)) (Based on Specimen YPM.VPPU.021397, grew up to 3.4 meters (11 feet 2 inches) in length) https://peerj.com/preprints/26829/ Alaska Troodontid (Troodontidae (could be a species of Troodon or a new genus in Troodontidae) - Prince Creek Formation Alaska, Western North America) (Late Cretaceous (70.6-69.1 Million Years ago) (grew up to almost 4 meters (13 feet) in length) https://www.researchgate.net/publication/236632883_On_the_Occurrence_of_Exceptionally_Large_Teeth_of_Troodon_Dinosauria_Saurischia_from_the_Late_Cretaceous_of_Northern_Alaska Latenivenatrix mcmasterae (Troodontidae - Dinosaur Park Formation, Alberta Canada, Western North America) (Late Cretaceous (75.5 Million years ago)) (grew up to 3.5 meters (11.5 feet) in length) https://tspace.library.utoronto.ca/bitstream/1807/78296/1/cjes-2017-0031.pdf Unnamed Mount Laurel Formation Giant Dromaeosauridae (Dromaeosauridae - Eastern North America) (Late Cretaceous (72.1 Million Years ago)) (based on Specimen NJSM GP 22949, grew up to 3.4 meters (11 feet 2 inches) in length) https://royalsocietypublishing.org/doi/10.1098/rsos.191206 What do you guys think?- 11 replies
-
- 3
-
- alaska troodon
- cretaceous
- (and 13 more)
-
- 5 replies
-
- ankylosaurus
- carcharodontosaurus
-
(and 1 more)
Tagged with:
-
Hi everyone Here is again something new! It's a Utahraptor,and I don't want to say anything else except that I hope that u will like this one. Enjoy! Darko
-
BEWARE OF FAKE UTAHRAPTOR CLAW!!!
hxmendoza posted a topic in Is It Real? How to Recognize Fossil Fabrications
Our favorite auction site has a seller currently trying to sell a rare andsuppisedly real Utahraptor claw! And found in Arizona at that! As of this beware posting of mine, this claw is at around $425 after 13 current bids! It’s a fake!! It is a cast claw imbedded in a cast matrix Block! BEWARE! You can see numerous air bubble imperfections in the “matrix” block and there are obvious air bubble holes/imperfections of the articulating surface of the claw. The claw itself is a direct replica cast from, or actually is, of a cast replica hand claw that is seen often online of a Velociraptor hand claw. I have reported the seller to the auction site. I would suggest you all take a look and also report it as fraudulent. Look at the attached pics:- 12 replies
-
- 13
-
- dinosaur claw fake
- fake fossil
-
(and 1 more)
Tagged with:
-
Trapped in an 18,000-pound block of quicksand now turned to stone is a hidden treasure of well-preserved Utahraptor fossils. Utahraptor ostrommaysorum is a large (around five meters or 18 feet long), feathered, predatory theropod dinosaur from Utah’s early Cretaceous (~124 million years ago). Utahraptors sported huge sickle claws on their second toes, with the largest specimen measuring at 22 cm (8.7”) long. Utahraptor is a dromaeosaurid dinosaur — popularly called “raptors” based on the Jurassic Park movie franchise shorthand for it's sickle-clawed stars. The illustration below shows the suspected setting for the origin of this amazing fossil block. Bones of an iguanodontid dinosaur that was also believed to have gotten mired in quicksand. So far bones from perhaps six individual Utahraptors have been found and they think were attracted to the quicksand mire by the easy prey and we're trapped. This block could provide evidence for pack hunting behavior in Utahraptors Funding is required to keep the project moving The setting, Utahs badlands the Cedar Mountain Formation initial discovery Sickle Claw visible More initial discoveries Jaw fragment Dentary Utahraptor Project Link to learn much more about what is going on. http://utahraptors.utahpaleo.org/#gallery
- 55 replies
-
- 20
-
- cedar mountain formation
- early cretaceous
- (and 2 more)
-
Velociraptor & Utahraptor: How do the cousins compare
Troodon posted a topic in General Fossil Discussion
An easy to understand basic comparison of these two iconic raptors https://mongoliandinosaurs.org/velociraptor-and-utahraptor-how-do-the-cousins-compare-after-new-information-comes-to-light/ VELOCIRAPTOR UTAHRAPTOR- 2 replies
-
- 6
-
- cretaceous
- utahraptor
-
(and 1 more)
Tagged with:
-
-
Does Anyone Have/seen Any Utahraptor Material?
Raptor Lover posted a topic in General Fossil Discussion
Do any of you guys have any Utahraptor fossils or have seen any Utahraptor fossils? -
Hello! I have recently rekindled my love for dinosaurs and have invested in buying dinosaur fossils. I love dromaeosaurs! I already have 4 raptor fossils (3 teeth and a toe bone). Along with my raptor fossils, I have tyrannosaurid tooth, a Spinosaurus tooth, and a desmoceras ammonite. I am interested in anything raptor related!
- 7 replies
-
- Deinonychus
- Dinosaur
-
(and 5 more)
Tagged with: