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Giant Dinosaurs Names For Children And Kids | Styracosaurus Parasaurolophus Dino-Carno Hadrosaurus
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Drawn to Dinosaurs: Hadrosaurus foulkii
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The Isle Realism: Hadrosaurus Migration, Getting Activated
The Isle Realism: Hadrosaurus Migration, Getting Activated
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Channel: SpookiPlays
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Channel: meubebenaweb
My Hadrosaurus Tribute
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Channel: PreFaN Z
Game lắp ráp robot khủng long hadrosaurus 机器人恐龙, ロボット恐竜, Робот динозавров, 로봇 공룡, robot dinosaurs
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Published: 2015/12/22
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150th Anniversary of Hadrosaurus foulkii Discovery
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Connor & Friends Credits: Connor Feeds the Hadrosaurus
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Published: 2016/08/02
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Hadrosaurus
Temporal range: Late Cretaceous, 79.5 Ma
Hadro bones.JPG
Displayed casts of the 35 known bones at the Philadelphia Academy of Natural Sciences
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Ornithischia
Suborder: Ornithopoda
Family: Hadrosauridae
Subfamily: Hadrosaurinae
Cope, 1869
Genus: Hadrosaurus
Leidy, 1858
Species: H. foulkii
Binomial name
Hadrosaurus foulkii
Leidy, 1858
Synonyms[1]

Hadrosaurus cavatus Cope, 1871
Ornithotarsus immanis Cope, 1869

Hadrosaurus (/ˌhædrəˈsɔːrəs/;[2][3] from Greek ἁδρός, hadros, meaning "bulky" or "large", and σαῦρος, sauros, meaning "lizard")[4][5][6][7] is a valid[8] genus of hadrosaurid dinosaur that lived in North America during the Late Cretaceous Period.

Hadrosaurus foulkii, the only species in this genus, is known from a single specimen consisting of much of the skeleton and parts of the skull. The specimen was collected in 1858 from the Woodbury Formation in New Jersey, USA, representing the first dinosaur species known from more than isolated teeth to be identified in North America. Using radiometric dating of bivalve shells from the same formation, the sedimentary rocks where the Hadrosaurus fossil was found have been dated at some time between 80.5 and 78.5 million years ago.[9]

In 1868 the only known specimen became the first ever mounted dinosaur skeleton and since 1991 the species H. foulkii has become the official state dinosaur of New Jersey.

Discovery and history[edit]

A photo of the site where the fossils were found (2010)

In 1838, John Estaugh Hopkins was digging in a marl pit (on a small tributary of the Cooper River in Haddonfield, New Jersey, and part of the Campanian-age Woodbury Formation) when he uncovered large bones, putting them on display at his home, also in Haddonfield. In 1858, these bones sparked the interest of a visitor, William Parker Foulke. The skeleton was dug out from the marl pit in 1858 by Foulke. The excavation site, known as the Hadrosaurus foulkii Leidy site, is now a National Historic Landmark. Foulke contacted paleontologist Joseph Leidy, and together they recovered an almost complete set of limbs, along with a pelvis, several part of the feet, 28 vertebrae (including 18 from the tail), eight teeth and two small parts of the jaw. Foulke and Leidy studied the fossils together, and in 1858, Leidy formally described and named Hadrosaurus foulkii in honor of his collaborator.[1]

Leidy recognized that these bones were from a dinosaur by their similarity to those of Iguanodon, discovered in England some decades before, but the skeleton of Hadrosaurus was far more complete. Leidy's monograph Cretaceous Reptiles of the United States, describing Hadrosaurus more completely and with illustrations, was written in 1860, but the American Civil War delayed its publication until 1865.

Benjamin Waterhouse Hawkins' mounted Hadrosaurus, the first mounted dinosaur skeleton in the world

Leidy reconstructed Hadrosaurus as a biped, in contrast to the view at the time that such dinosaurs were quadrupedal. The entire skeleton was completely assembled in 1868 by a team including English sculptor and naturalist Benjamin Waterhouse Hawkins and was put on display at Philadelphia Academy of Natural Sciences. It was the first-ever mounted dinosaur skeleton.[1] The skeleton is usually kept 'behind-the-scenes' in the Academy's collections. However, from November 22, 2008 until April 19, 2009, a fully assembled cast of the skeleton and an exhibit about the science and culture surrounding the dinosaur's discovery was open to the public.

Hadrosaurus was named the state fossil of New Jersey, designated in 1994. It is one of the most celebrated dinosaurs ever, and is of great historic importance.[1]

When the skeleton was first assembled, it was displayed with a plaster skull sculpted by Hawkins. Many other artists have recreated Hadrosaurus with skulls from other, related species such as Gryposaurus and Brachylophosaurus. A statue of Hadrosaurus, sculpted by Haddonfield resident John Giannotti, now stands in the center of the town of Haddonfield, commemorating its discovery there.

Classification[edit]

Restoration

Despite the fact that the family Hadrosauridae has Hadrosaurus as its type genus, the skeleton lacks a skull and was long viewed as too incomplete to compare to other hadrosaurs for classification purposes, leading most scientists to consider it a nomen dubium, or dubious name.[8] However, a re-evaluation of the fossil material in 2011 noted several distinct characteristics of the skeleton that could allow the genus Hadrosaurus and species H. foulkii to remain in use as valid taxa.[8]

Hadrosaurus has also traditionally served as the basis for a large subfamily called Hadrosaurinae, which was seen as a group of largely crestless group of hadrosaurs related to the crested subfamily Lambeosaurinae. However, the changing view of Hadrosaurus classification in relation to other hadrosaurs has led some scientists to rename these subfamilies. In a 2008 study, Hadrosaurus was found to be more primitive than either lambeosaurines or other "hadrosaurines", and not a particularly close relative of classic "hadrosaurines" such as Edmontosaurus and Saurolophus. As a result of this, the name Hadrosaurinae was restricted to Hadrosaurus alone, and the subfamily comprising the traditional "hadrosaurines" was renamed the Saurolophinae.[10]

Reconstructed skeleton, Academy of Natural Sciences
Plates from Leidy's description

Below is a simplified cladogram recovered by Ramírez-Velasco et al. in 2012 in their description of Huehuecanauhtlus. This topology was recovered using an extensive sampling of 60 hadrosauroid species, and two outgroup taxa, which were scored based on 287 morphological traits,[11] and included data from two recent redescriptions of Hadrosaurus by Prieto-Márquez et al. (2006) and Prieto-Márquez (2011).[1][8]

Hadrosauroidea 

Jinzhousaurus yangi




Fukuisaurus tetoriensis




Penelopognathus weishampeli




Equijubus normani




Probactrosaurus gobiensis





Eolambia caroljonesa



Protohadros byrdi





Tanius sinensis





Bactrosaurus johnsoni



Glishades ericksoni





Gilmoreosaurus mongoliensis




Huehuecanauhtlus tiquichensis





Jintasaurus meniscus



Tethyshadros insularis



 Hadrosauridae 
 Hadrosaurinae 

Hadrosaurus foulkii



 Saurolophinae 


Acristavus gagslarsoni




Maiasaura peeblesorum



Brachylophosaurus canadensis






Shantungosaurus giganteus





Edmontosaurus annectens



Edmontosaurus regalis




Other saurolophines →





 Lambeosaurinae 

Aralosaurus tuberiferus




Jaxartosaurus aralensis





Tsintaosaurus spinorhinus



Pararhabdodon isonensis




Other lambeosaurines →


















However, the latest phylogeny of the Hadrosauroidea indicates Hadrosaurus is definitely placed within the monophyletic group including all nonlambeosaurine hadrosaurids.[12] Therefore, the traditional Hadrosaurinae should be still valid for designating all non-lambeosaurine hadrosaurids.

Paleoecology[edit]

The holotype of Hadrosaurus was found in marine sediments, which suggests the skeleton was transported by a river and then deposited in the Cretaceous sea. The Hadrosaurus remains all persist to the Woodbury Formation.[1]

References[edit]

  1. ^ a b c d e f Prieto-Marquez, A., Weishampel, D.B. and Horner, J.R. (2006). "The dinosaur Hadrosaurus foulkii, from the Campanian of the East Coast of North America, with a reevaluation of the genus." Acta Palaeontologica Polonica, 51(1): 77–98.
  2. ^ "Hadrosaur". Oxford Dictionaries. Oxford University Press. Retrieved 2016-01-21. 
  3. ^ "Hadrosaur". Merriam-Webster Dictionary. Retrieved 2016-01-21. 
  4. ^ Levins, Hoage. "From the Shores of a Bucolic Pond to World Fame: Haddonfield's Dinosaur". Finding the World's First Dinosaur Skeleton: Hadrosaurus foulkii. Retrieved 24 January 2011. 
  5. ^ "hadrosaur". Online Etymology Dictionary. 
  6. ^ ἁδρός. Liddell, Henry George; Scott, Robert; A Greek–English Lexicon at the Perseus Project
  7. ^ σαῦρος. Liddell, Henry George; Scott, Robert; A Greek–English Lexicon at the Perseus Project
  8. ^ a b c d Prieto-Márquez, A. (2011). "Revised diagnoses of Hadrosaurus foulkii Leidy, 1858 (the type genus and species of Hadrosauridae Cope, 1869) and Claosaurus agilis Marsh, 1872 (Dinosauria: Ornithopoda) from the Late Cretaceous of North America". Zootaxa. 2765: 61–68. 
  9. ^ Gallagher, W.B. (2005). "Recent mosasaur discoveries from New Jersey and Delaware, USA: stratigraphy, taphonomy and implications for mosasaur extinction." Netherlands Journal of Geosciences, 84(3): 241.
  10. ^ Prieto-Márquez, A. (2013). "Skeletal morphology of Kritosaurus navajovius (Dinosauria:Hadrosauridae) from the Late Cretaceous of the North American south-west, with an evaluation of the phylogenetic systematics and biogeography of Kritosaurini". Journal of Systematic Palaeontology. in press. doi:10.1080/14772019.2013.770417. 
  11. ^ Ramírez-Velasco, A. A.; Benammi, M.; Prieto-Márquez, A.; Ortega, J. S. A.; Hernández-Rivera, R.; Sues, H. D. (2012). "Huehuecanauhtlus tiquichensis, a new hadrosauroid dinosaur (Ornithischia: Ornithopoda) from the Santonian (Late Cretaceous) of Michoacán, Mexico". Canadian Journal of Earth Sciences. 49 (2): 379–395. doi:10.1139/e11-062. 
  12. ^ Xing, H.; Wang, D.; Han, F.; Sullivan, C.; Ma, Q.; He, Y.; Hone, D. W. E.; Yan, R.; Du, F.; Xu, X. (2014). "A New Basal Hadrosauroid Dinosaur (Dinosauria: Ornithopoda) with Transitional Features from the Late Cretaceous of Henan Province, China". PLoS ONE. 9 (6): e98821. PMC 4047018Freely accessible. PMID 24901454. doi:10.1371/journal.pone.0098821. 

External links[edit]

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