Share
VIDEOS 1 TO 50
Dinosaur Discoveries Laramidia
Dinosaur Discoveries Laramidia
Published: 2015/03/22
Channel: Michael Vespia
Western Interior Seaway
Western Interior Seaway
Published: 2016/08/31
Channel: WikiWikiup
Dinosaurs of the Lost Continent | Dr. Scott Sampson, Paleontologist
Dinosaurs of the Lost Continent | Dr. Scott Sampson, Paleontologist
Published: 2016/05/05
Channel: Burke Museum
WELCOME TO LARAMEDIA
WELCOME TO LARAMEDIA
Published: 2016/01/23
Channel: Matthew Laraway
LARAMIDIA paleo talks ep.14
LARAMIDIA paleo talks ep.14
Published: 2016/05/13
Channel: paleo man
Dinosaur Train | Robot Chicken | Adult Swim
Dinosaur Train | Robot Chicken | Adult Swim
Published: 2015/10/27
Channel: Adult Swim
SPIDERMAN VS T-REX - TYRANNOSAURUS REX VS SPIDER-MAN
SPIDERMAN VS T-REX - TYRANNOSAURUS REX VS SPIDER-MAN
Published: 2017/04/08
Channel: KjraGaming
DIA DAS MAES - video homenagem Marcelo Lara Midia
DIA DAS MAES - video homenagem Marcelo Lara Midia
Published: 2017/05/26
Channel: Marcelo Lara Midia
New
New 'King of Gore' Dinosaur Reveals T.Rex Lineage
Published: 2017/06/24
Channel: 21 News
Top 10 Classic And Oldest Dinosaur Species
Top 10 Classic And Oldest Dinosaur Species
Published: 2014/05/12
Channel: Animal Breeds
How to Pronounce Laramidia
How to Pronounce Laramidia
Published: 2015/02/25
Channel: Pronunciation Guide
Lythronax: Dinosaur of the Day
Lythronax: Dinosaur of the Day
Published: 2016/05/17
Channel: I Know Dino
T-REX VS GODZILLA | BEST SCENES MASHUP HD ✔
T-REX VS GODZILLA | BEST SCENES MASHUP HD ✔
Published: 2016/11/14
Channel: /SMASHED LEGENDS
Dinosaur Train S3EP25 - Back in Time HD
Dinosaur Train S3EP25 - Back in Time HD
Published: 2016/03/18
Channel: CobraGamesCartoons HD
Dinosaur Bigger Than T-Rex - Dinosaurs Documentary 2017
Dinosaur Bigger Than T-Rex - Dinosaurs Documentary 2017
Published: 2017/07/09
Channel: GoodDocumentaries 1
T.Rex Was Likely an Invasive Species
T.Rex Was Likely an Invasive Species
Published: 2017/06/18
Channel: 21 News
FESTA 15 ANOS - Barbara Marques - Trailer Marcelo Lara Midia
FESTA 15 ANOS - Barbara Marques - Trailer Marcelo Lara Midia
Published: 2017/05/26
Channel: Marcelo Lara Midia
Dinosaur Big City Part 1/2
Dinosaur Big City Part 1/2
Published: 2015/09/21
Channel: PBS Shows
TOP 10 WEIRD Looking DINOSAURS
TOP 10 WEIRD Looking DINOSAURS
Published: 2015/11/24
Channel: Mega Top Tens
DINOSAUR TRAIN | Buddy and Dennis Become Friends! | PBS KIDS
DINOSAUR TRAIN | Buddy and Dennis Become Friends! | PBS KIDS
Published: 2017/04/10
Channel: PBS KIDS
Tyrannosaurus - Video Learning - WizScience.com
Tyrannosaurus - Video Learning - WizScience.com
Published: 2015/08/05
Channel: Wiz Science™
Dinosaur with
Dinosaur with 'Bent Sword' Head Spikes Unearthed in Utah
Published: 2017/06/17
Channel: 21 News
LONDON MUSIC PUB - TRAILER FESTA
LONDON MUSIC PUB - TRAILER FESTA
Published: 2017/05/28
Channel: Marcelo Lara Midia
Plate Tectonics in action
Plate Tectonics in action
Published: 2010/10/25
Channel: Fudd
Documentaries - Bigger Than T.Rex: Spinosaurus - Documentary 2017 ♥
Documentaries - Bigger Than T.Rex: Spinosaurus - Documentary 2017 ♥
Published: 2017/01/15
Channel: Troy Compton
Dinosaur Big City Part 3/4
Dinosaur Big City Part 3/4
Published: 2015/09/21
Channel: PBS Shows
Tirex
Tirex
Published: 2017/04/04
Channel: Jean-Michel Raynal
My tyrannosaurus rex and Spinosaurus tribute
My tyrannosaurus rex and Spinosaurus tribute
Published: 2013/06/15
Channel: zygarde legendary
Descubren una nueva especie de tiranosaurio
Descubren una nueva especie de tiranosaurio
Published: 2013/11/08
Channel: Chumy Chamy
Tyrannosaurus speaks
Tyrannosaurus speaks
Published: 2012/08/11
Channel: cashiscream
Tyrannosaurus Rex (Roar Test)
Tyrannosaurus Rex (Roar Test)
Published: 2016/07/24
Channel: WillDinoMaster55
Paleo Speedsketching Test 34# Nasutoceratops
Paleo Speedsketching Test 34# Nasutoceratops
Published: 2017/03/08
Channel: Joschua Knüppe
Kosmoceratops - Video Learning - WizScience.com
Kosmoceratops - Video Learning - WizScience.com
Published: 2015/08/05
Channel: Wiz Science™
Science × Rhymes (#16) Dino Fossils
Science × Rhymes (#16) Dino Fossils
Published: 2015/07/23
Channel: Science With Tom
Eliza  Cate
Eliza Cate's Tyrannosaurus Presentation
Published: 2014/04/24
Channel: Project 45+ (Aust)
Dry Times at Pteranodon Terrace; Big Misty Sea Fishing Contest
Dry Times at Pteranodon Terrace; Big Misty Sea Fishing Contest
Published: 2017/03/14
Channel: William Hagar
2 Dome Headed Dinosaurs the Size of German Shepherds Discovered
2 Dome Headed Dinosaurs the Size of German Shepherds Discovered
Published: 2017/06/13
Channel: 21 News
Dinosaur prank - Tyrannosaurus Rex
Dinosaur prank - Tyrannosaurus Rex
Published: 2015/07/01
Channel: NikoLas Vegas
T-Rex Cỗ Xe Tăng Hạng Nặng Thời Tiền Sử - ARK Ragnarock #3
T-Rex Cỗ Xe Tăng Hạng Nặng Thời Tiền Sử - ARK Ragnarock #3
Published: 2017/07/02
Channel: Thành EJ
Who
Who's the alpha?
Published: 2016/06/16
Channel: Family FUnny
Dinosaur Velociraptor Fighting Tyrannosaurus Rex Battle for Kids!  รบ ไดโนเสาร
Dinosaur Velociraptor Fighting Tyrannosaurus Rex Battle for Kids! รบ ไดโนเสาร
Published: 2015/06/20
Channel: The Kids Club
Lythronax: I Know Dino Podcast Episode 52
Lythronax: I Know Dino Podcast Episode 52
Published: 2016/05/17
Channel: I Know Dino
2 dome-headed dinosaurs the size of German shepherds discovered
2 dome-headed dinosaurs the size of German shepherds discovered
Published: 2017/07/10
Channel: Cristina Sellva
Play Doh Dinosaurs toys games t rex good dinosaur for kids playdough playdoh  peppa pig toys
Play Doh Dinosaurs toys games t rex good dinosaur for kids playdough playdoh peppa pig toys
Published: 2017/01/17
Channel: Disney Toy Train
Porto Seguro - Trânsito + Gentil
Porto Seguro - Trânsito + Gentil
Published: 2015/06/22
Channel: Juliana Ladeira
Top 10 Facts - Utah // Top Facts
Top 10 Facts - Utah // Top Facts
Published: 2016/05/13
Channel: Top Facts
KHỦNG LONG bạo chúa, DINOSAUR - T-Rex, Tyrannosaurus Rex, unbox Dinosaur toy, bóc đồ chơi khủng long
KHỦNG LONG bạo chúa, DINOSAUR - T-Rex, Tyrannosaurus Rex, unbox Dinosaur toy, bóc đồ chơi khủng long
Published: 2017/04/07
Channel: BonBi ToysReview
Tyrannosaurus Hex
Tyrannosaurus Hex
Published: 2015/04/07
Channel: Bloo
T-Rex Fossil
T-Rex Fossil
Published: 2013/08/31
Channel: Jurassic56
National geographic - T Rex of the Deep - BBC wildlife animal documentary
National geographic - T Rex of the Deep - BBC wildlife animal documentary
Published: 2016/09/24
Channel: Willow Mcneilly
NEXT
GO TO RESULTS [51 .. 100]

WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Laramidia, circa 100 MYA

Laramidia was an island continent that existed during the Late Cretaceous period (99.6–66 Ma), when the Western Interior Seaway split the continent of North America in two. In the Mesozoic era, Laramidia was an island land mass separated from Appalachia to the east by the Western Interior Seaway. The seaway eventually shrank, split across the Dakotas, and retreated towards the Gulf of Mexico and the Hudson Bay. The masses joined to unite the North American continent.

The name was coined by J. David Archibald in 1996.[1][2]

Geography[edit]

Laramidia stretches from modern-day Alaska to Mexico.[3] The area is rich in dinosaur fossils. Tyrannosaurs, dromaeosaurids, troodontids, hadrosaurs, ceratopsians (including Kosmoceratops and Utahceratops[4]), pachycephalosaurs, and titanosaur sauropods are some of the dinosaur groups that lived on this landmass.

Range[edit]

Vertebrate fossils have been found in the region from Alaska to Coahuila.[4][5][6][7]

Fauna[edit]

From the Turonian age of the Late Cretaceous to the very beginning of the Paleocene, Laramidia was separated from Appalachia to the east. As a result, the fauna evolved differently on each land mass over that time. Geological conditions were generally favorable for the preservation of fossils in Laramidia, making the western United States one of the most productive fossil regions in the world. Less is known about Appalachian biodiversity in the Cretaceous as few fossiliferous deposits exist in the region today and half of the fossil beds in Appalachia were destroyed during the Pleistocene ice age. However, fossil beds which haven't been discovered yet could exist in areas of the former Appalachian continent.

In western North America during the Cretaceous the dominant predators were the tyrannosaurs, huge predatory theropods with proportionately massive heads built for ripping flesh from their prey. In Laramidia the top of the terrestrial food chain was occupied by the theropods of Tyrannosaurinae such as Tyrannosaurus rex, Nanuqsaurus hoglundi,[8] Daspletosaurus, Teratophoneus, and theropods of Albertosaurinae such as Albertosaurus and Gorgosaurus, all being included under the same family of Tyrannosauridae and not actually contemporary. The bodies of tyrannosaurs exhibited huge heads and legs, in contrast to proportionally tiny arms. The teeth exhibited in this family are rather comparable to railroad spikes and would have helped inflict major damage on prey.

Another common group of North American dinosaurs were the hadrosaurs. The fossil record shows a staggering variety of hadrosaur forms in Laramidia.

Other differences in genera appear between the island land masses. Sauropods roamed Laramidia during the Cretaceous after apparently dying out in Appalachia. Nodosaurs, though, appear to have been more plentiful in Appalachia. Nodosaurs were large, herbivorous armored dinosaurs resembling armadillos. They were scarce in Laramidia by the late Cretaceous, existing only in specialized forms like Edmontonia and Panoplosaurus while nodosaurs were thriving in Appalachia.

References[edit]

  1. ^ Archibald, J. David; Dinosaur Extinction and the End of an Era: What the Fossils Say, New York, NY: Columbia University Press, 1996
  2. ^ Laramidia is named for Laramie, Wyoming, located in the former landmass.
  3. ^ MSN, "Amazing Horned Dinosaurs Discovered" (23-Sep-2010) Accessed 23-Sep-2010.
  4. ^ a b Scott D. Sampson; Mark A. Loewen; Andrew A. Farke; Eric M. Roberts; Catherine A. Forster; Joshua A. Smith; Alan L. Titus (2010). "New Horned Dinosaurs from Utah Provide Evidence for Intracontinental Dinosaur Endemism". PLoS ONE. 5 (9): e12292. Bibcode:2010PLoSO...512292S. PMC 2929175Freely accessible. PMID 20877459. doi:10.1371/journal.pone.0012292. 
  5. ^ Rozell, Ned. Geophysical Institute, UAF - Alaska Science Forum, "Shedding light on Arctic dinosaurs, Alaska Science Forum, Article #1737" (10-Feb-2005) Accessed 14-Nov-2011.
  6. ^ U.S. Department of the Interior, Bureau of Land Management, Alaska, Resources, Environmental Education, "Dinosaurs on Alaska's North Slope" (30-May-2008) Accessed 14-Nov-2011.
  7. ^ "Hallan en Coahuila cementerio de dinosaurios" (in Spanish). El Universal. Retrieved 25 April 2015. 
  8. ^ "A Diminutive New Tyrannosaur from the Top of the World" (12-Mar-2014) Accessed 12-Mar-2014.

Disclaimer

None of the audio/visual content is hosted on this site. All media is embedded from other sites such as GoogleVideo, Wikipedia, YouTube etc. Therefore, this site has no control over the copyright issues of the streaming media.

All issues concerning copyright violations should be aimed at the sites hosting the material. This site does not host any of the streaming media and the owner has not uploaded any of the material to the video hosting servers. Anyone can find the same content on Google Video or YouTube by themselves.

The owner of this site cannot know which documentaries are in public domain, which has been uploaded to e.g. YouTube by the owner and which has been uploaded without permission. The copyright owner must contact the source if he wants his material off the Internet completely.

Powered by YouTube
Wikipedia content is licensed under the GFDL and (CC) license