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ASDC - Bistahieversor vs Lythronax
ASDC - Bistahieversor vs Lythronax
Published: 2014/04/11
Channel: Allosaurus Rex
PPBA Bistahieversor vs Tyrannosaurus
PPBA Bistahieversor vs Tyrannosaurus
Published: 2016/07/27
Channel: Parasaurolophus 67
PPBA Bistahieversor vs Lythronax
PPBA Bistahieversor vs Lythronax
Published: 2016/04/07
Channel: Parasaurolophus 67
CollectA® Bistahieversor Review
CollectA® Bistahieversor Review
Published: 2015/02/01
Channel: JurassicCollectables
MRDF Bistahieversor vs Lythronax (little old)
MRDF Bistahieversor vs Lythronax (little old)
Published: 2017/05/18
Channel: Tyrannosaurus Fan
Bistahieversor Vs Acrocanthosaurus
Bistahieversor Vs Acrocanthosaurus
Published: 2015/04/13
Channel: Behemothic
Review 41: CollectA Bistahieversor
Review 41: CollectA Bistahieversor
Published: 2014/08/09
Channel: Matthew The Dinosaur King
Tyrannosauroid Tribute
Tyrannosauroid Tribute
Published: 2012/04/06
Channel: CKprimeval07
Tribute to Bistahieversor
Tribute to Bistahieversor
Published: 2010/02/09
Channel: Rapator2
Bistahieversor - Video Learning - WizScience.com
Bistahieversor - Video Learning - WizScience.com
Published: 2015/09/04
Channel: Wiz Science™
¡T-Rex! Las 5 especies mas espeluznantes de la prehistoria.
¡T-Rex! Las 5 especies mas espeluznantes de la prehistoria.
Published: 2017/04/27
Channel: TopMan
PPBA Eocarcharia vs Bistahieversor
PPBA Eocarcharia vs Bistahieversor
Published: 2015/12/13
Channel: Parasaurolophus 67
Tribute to Bistahieversor
Tribute to Bistahieversor
Published: 2010/07/26
Channel: Rapator3
Soundscapes bistahieversor
Soundscapes bistahieversor
Published: 2016/07/23
Channel: Cj Magruder
Bistahieversor Stick Showcase
Bistahieversor Stick Showcase
Published: 2016/03/22
Channel: Theropod
Size Comparison
Size Comparison
Published: 2014/10/01
Channel: Prehi
Pivot Dinosaur PACAK2017-Hell creek battles Lythronax Vs Bistahieversor
Pivot Dinosaur PACAK2017-Hell creek battles Lythronax Vs Bistahieversor
Published: 2017/06/08
Channel: NarSilBR Animator
GRFC - spinosaurus aegiptiacus vs bistahieversor sealeyi
GRFC - spinosaurus aegiptiacus vs bistahieversor sealeyi
Published: 2015/02/25
Channel: Giganotosaurus rex pictures
Collecta Bistahieversor Dinosaur Model Reviewed
Collecta Bistahieversor Dinosaur Model Reviewed
Published: 2014/10/06
Channel: Everything Dinosaur
Pivot Stick Figure Size Comparison #1
Pivot Stick Figure Size Comparison #1
Published: 2014/09/19
Channel: AstralEssence
PDW   ALBERTOSAURUS VS DASPLETOSAURUS VS BISTAHIEVERSOR VS GORGOSAURUS VS ZHUCHENGTYRANNUS
PDW ALBERTOSAURUS VS DASPLETOSAURUS VS BISTAHIEVERSOR VS GORGOSAURUS VS ZHUCHENGTYRANNUS
Published: 2015/08/14
Channel: SPINO REX
albertosaurus sarcophagus vs bistahieversor sealeyi
albertosaurus sarcophagus vs bistahieversor sealeyi
Published: 2014/09/05
Channel: Giganotosaurus rex pictures
PACAK2017-Hell creek battles Tyrannosaurus vs Ankylosaurus
PACAK2017-Hell creek battles Tyrannosaurus vs Ankylosaurus
Published: 2017/05/11
Channel: Psycho Rex
Carnivore Dinosaur Guide
Carnivore Dinosaur Guide
Published: 2012/06/24
Channel: Gigacerato458
allosaurus vs Bistahieversor
allosaurus vs Bistahieversor
Published: 2016/04/10
Channel: carnotaurus05
FUPB Bistahieversor vs Gorgosaurus
FUPB Bistahieversor vs Gorgosaurus
Published: 2016/09/01
Channel: Flaming Utahraptor
My drawings, Episode II part 3 : Cretaceous #2
My drawings, Episode II part 3 : Cretaceous #2
Published: 2016/12/29
Channel: RaptorGorilla
Bistahieversor VS Mapusaurus (dino combat parte #1)
Bistahieversor VS Mapusaurus (dino combat parte #1)
Published: 2017/04/02
Channel: Homunculo Vinchi
Bored Animation : Bistahieversor SSJ VS Goku SSGSS
Bored Animation : Bistahieversor SSJ VS Goku SSGSS
Published: 2016/03/26
Channel: Skelly Rexy with Book TM
Bistahieversor Test
Bistahieversor Test
Published: 2016/10/02
Channel: SpinoBro14
Bistahieversor vs Irritator
Bistahieversor vs Irritator
Published: 2014/09/17
Channel: Parasaurolophus 67
PPBA Tarbosaurus vs Tyrannosaurus
PPBA Tarbosaurus vs Tyrannosaurus
Published: 2015/09/08
Channel: Parasaurolophus 67
Stunt Rage 2017 Acrothantosaurus vs Bistahieversor (Quick Match)
Stunt Rage 2017 Acrothantosaurus vs Bistahieversor (Quick Match)
Published: 2017/08/03
Channel: Gigaston Skull World Season 3 2017
New Dinosaur Stampede Disaster (Newer Soundscape)
New Dinosaur Stampede Disaster (Newer Soundscape)
Published: 2013/07/05
Channel: Allosaurus Rex
Even More Pivot Stick Figures Sarcosuchus, Bistahieversor+More!
Even More Pivot Stick Figures Sarcosuchus, Bistahieversor+More!
Published: 2014/05/13
Channel: AstralEssence
The Bisti Beast
The Bisti Beast
Published: 2010/02/19
Channel: ABQJournal
Bistahieversor Stick
Bistahieversor Stick
Published: 2017/08/27
Channel: Fragils
DCB Allosaurus vs Bistahieversor
DCB Allosaurus vs Bistahieversor
Published: 2015/08/27
Channel: Mapuzaurez
Pivot- Rajasaurus vs Bistahieversor
Pivot- Rajasaurus vs Bistahieversor
Published: 2015/07/26
Channel: Rash Anims
Collecta Bistahieversor
Collecta Bistahieversor
Published: 2016/04/16
Channel: XCLASSGAMING
PPBA Acheroraptor vs Dilophosaurus
PPBA Acheroraptor vs Dilophosaurus
Published: 2016/07/24
Channel: Parasaurolophus 67
OBM - Dinosaur - Bistahieversor
OBM - Dinosaur - Bistahieversor
Published: 2016/12/30
Channel: Our Best Moments
PPBA Great White Shark vs Mako Shark
PPBA Great White Shark vs Mako Shark
Published: 2016/04/04
Channel: Parasaurolophus 67
CDG
CDG
Published: 2017/05/28
Channel: SpinoBro14
ATBA Spinosaurus Rampage
ATBA Spinosaurus Rampage
Published: 2017/03/11
Channel: FunnySpino Butterz
Dinosaur Toy Collection: Safari CollectA Battat Schleich Dinosaur Collection! Dionsaur Toys for Kids
Dinosaur Toy Collection: Safari CollectA Battat Schleich Dinosaur Collection! Dionsaur Toys for Kids
Published: 2015/04/11
Channel: WildCanadaKids
ASDC Reboot + Tests + Pivot Art
ASDC Reboot + Tests + Pivot Art
Published: 2017/02/11
Channel: Allosaurus Rex
ASDC - Spinosaurus vs Ekrixinatosaurus
ASDC - Spinosaurus vs Ekrixinatosaurus
Published: 2014/03/17
Channel: Allosaurus Rex
CollectA® Parasaurolophus
CollectA® Parasaurolophus
Published: 2015/09/10
Channel: JurassicCollectables
CollectA® Xenoceratops Review
CollectA® Xenoceratops Review
Published: 2015/02/24
Channel: JurassicCollectables
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WIKIPEDIA ARTICLE

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Bistahieversor
Temporal range: Late Cretaceous, 74.5 Ma
Bistahieversor.jpg
Skull at the New Mexico Museum of Natural History and Science
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Saurischia
Suborder: Theropoda
Family: Tyrannosauridae
Subfamily: Tyrannosaurinae
Genus: Bistahieversor
Carr & Williamson, 2010
Species: B. sealeyi
Binomial name
Bistahieversor sealeyi
Carr & Williamson, 2010

Bistahieversor (meaning "Bistahi destroyer") is a genus of tyrannosaurid dinosaur. Bistahieversor existed in the Late Cretaceous[1] Hunter Wash member of the Kirtland Formation, which has been dated to 74.55 ± 0.29 Ma.[2]

The name Bistahieversor comes from the Navajo Bistahí, or "place of the adobe formations" in reference to the Bisti/De-Na-Zin Wilderness where it was found, and eversor, meaning "destroyer."[1]

Description[edit]

Size comparison with a juvenile

Material from both adolescent and adult individuals has been found in the Kirtland Formation of New Mexico, United States. Adult Bistahieversor are estimated to have been around 9 metres (30 ft) long, weighing at least a ton. The snout is deep, indicating that the feature is not unique to more derived tyrannosaurs such as Tyrannosaurus. Geographical barriers such as the newly forming Rocky Mountains may have isolated the more southerly Bistahieversor from more derived northern tyrannosaurs.[3]

Bistahieversor differs from other tyrannosaurs in the possession of 64 teeth, an extra opening above the eye, and a keel along the lower jaw. The opening above the eye is thought to have accommodated an air sac that would have lightened the skull's weight. Bistahieversor also had a complex joint at its "forehead" that would have stabilized the skull, preventing movement at the joint.[4]

History of discovery[edit]

Wall-mounted fossil

The first remains now attributed to Bistahieversor, a partial skull and skeleton, were described in 1990 as a specimen of Aublysodon.[5] Additional remains, consisting of the incomplete skull and skeleton of a juvenile, were described in 1992.[6] Another, complete, skull and partial skeleton were found in the Bisti/De-Na-Zin Wilderness of New Mexico in 1998,[7] known colloquially as the "Bisti Beast".[8] In a 2000 paper, Thomas Carr and Thomas Williamson re-examined these four specimens and suggested that they did not belong to Aublysodon, but rather to one or more new species of Daspletosaurus.[9] However, it was not until 2010 that Carr and Williamson published a thorough re-description of the specimens and found that they belonged to a new genus and species of more generalized tyrannosauroid, which they named Bistahieversor sealeyi.[1]

Classification[edit]

Restoration

Bistahieversor is a genus of derived dinosaur currently classified in the subfamily Tyrannosaurinae. It is more derived than Teratophoneus but less derived than Lythronax.[10] It forms the sister taxon of a group including Lythronax, Nanuqsaurus, Tyrannosaurus, Tarbosaurus and Zhuchengtyrannus.[11]

Below is a cladogram illustrating the relationships of all tyrannosaurid genera:[11]

Tyrannosauridae
Albertosaurinae

Albertosaurus



Gorgosaurus



Tyrannosaurinae


Daspletosaurus



D. horneri





Teratophoneus




Bistahieversor




Lythronax




Nanuqsaurus





Tarbosaurus



Zhuchengtyrannus




Tyrannosaurus









See also[edit]

References[edit]

  1. ^ a b c Carr, Thomas D.; Williamson, Thomas E. (2010). "Bistahieversor sealeyi, gen. et sp. nov., a new tyrannosauroid from New Mexico and the origin of deep snouts in Tyrannosauroidea". Journal of Vertebrate Paleontology. 30 (1): 1–16. doi:10.1080/02724630903413032. 
  2. ^ Sullivan, Robert M.; Lucas, Spencer G. (2006). "The Kirtlandian land-vertebrate "age" – faunal composition, temporal position and biostratigraphic correlation in the nonmarine Upper Cretaceous of western North America". Bulletin. New Mexico Museum of Natural History and Science. 35: 7–29. 
  3. ^ Rettner, Rachael (28 January 2010). "New Tyrannosaur Species Discovered". LiveScience. Retrieved 1 February 2010. 
  4. ^ Viegas, J. (28 January 2010). "New Tyrannosaur Had More Teeth Than T. rex". Discovery News. Retrieved 1 February 2010. 
  5. ^ Lehman, Thomas M.; Carpenter, Kenneth (November 1990). "A partial skeleton of the tyrannosaurid dinosaur Aublysodon from the Upper Cretaceous of New Mexico". Journal of Paleontology. 64 (6): 1026–1032. JSTOR 1305741. doi:10.1017/S0022336000019843. 
  6. ^ Archer, Brad; Babiarz, John P. (July 1992). "Another tyrannosaurid dinosaur from the Cretaceous of northwest New Mexico". Journal of Paleontology. 66 (4): 690–691. doi:10.1017/S0022336000024598. 
  7. ^ "New Species of Tyrannosaur Discovered in Southwestern U.S.". Newswise. 28 January 2010. Retrieved 1 February 2010. 
  8. ^ "ABQJOURNAL NEWS/STATE: N.M. Tyrannosaur Is Officially Dubbed Bistahieversor sealeyi". www.abqjournal.com. Retrieved 2017-01-27. 
  9. ^ Carr, Thomas D.; Williamson, Thomas E. (2000). "A review of Tyrannosauridae (Dinosauria: Coelurosauria) from New Mexico". Bulletin. New Mexico Museum of Natural History and Science. 17: 113–145. 
  10. ^ Loewen, Mark A.; Irmis, Randall B.; Sertich, Joseph J. W.; Currie, Philip J.; Sampson, S. D. (2013). Evans, David C, ed. "Tyrant Dinosaur Evolution Tracks the Rise and Fall of Late Cretaceous Oceans". PLoS ONE. 8 (11): e79420. PMC 3819173Freely accessible. PMID 24223179. doi:10.1371/journal.pone.0079420. 
  11. ^ a b Fiorillo, Anthony R.; Tykoski, Ronald S. (2014). Dodson, Peter, ed. "A Diminutive New Tyrannosaur from the Top of the World". PLoS ONE. 9 (3): e91287. PMC 3951350Freely accessible. PMID 24621577. doi:10.1371/journal.pone.0091287. 

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