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1
Biggest Dinosaur Ever! Argentinosaurus - Planet Dinosaur - BBC
Biggest Dinosaur Ever! Argentinosaurus - Planet Dinosaur - BBC
::2013/07/05::
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2
Mapusaurus gang Vs. Argentinosaurus - Planet Dinosaur - BBC
Mapusaurus gang Vs. Argentinosaurus - Planet Dinosaur - BBC
::2013/07/12::
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3
The Biggest Dinosaurs of All Time - Clash of The Giants - Animals Documentary
The Biggest Dinosaurs of All Time - Clash of The Giants - Animals Documentary
::2013/09/26::
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4
Prehistoric Smackdown: Episode 6-Giganotosaurus vs Argentinosaurus.
Prehistoric Smackdown: Episode 6-Giganotosaurus vs Argentinosaurus.
::2013/07/19::
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5
I
I'm a Dinosaur - Argentinosaurus
::2012/12/12::
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6
Argentinosaurus PT 5 .
Argentinosaurus PT 5 .
::2012/09/18::
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7
Zamba - Excursión al Museo de Ciencias Naturales - Argentinosaurus
Zamba - Excursión al Museo de Ciencias Naturales - Argentinosaurus
::2013/07/02::
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8
Dinosaurs: Giants of Patagonia
Dinosaurs: Giants of Patagonia
::2014/05/09::
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9
Planet Dinosaur - Lacusavagus, Argentinosaurus and Aucasaurus
Planet Dinosaur - Lacusavagus, Argentinosaurus and Aucasaurus
::2012/11/28::
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10
Giganotosaurus vs. Argentinosaurus
Giganotosaurus vs. Argentinosaurus
::2014/06/09::
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11
Planet Dinosaur - Pterosaurs flying around a fallen Argentinosaurus
Planet Dinosaur - Pterosaurs flying around a fallen Argentinosaurus
::2012/11/28::
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12
Argentinosaurus Feeding - Planet Dinosaur - Episode 5 - BBC One
Argentinosaurus Feeding - Planet Dinosaur - Episode 5 - BBC One
::2011/10/14::
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13
Argentinosaurus - Planet Dinosaur - Episode 5 - BBC One
Argentinosaurus - Planet Dinosaur - Episode 5 - BBC One
::2011/10/14::
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14
Minecraft Dinosaurs - Part 91 - Argentinosaurus and Naming our Mosasaur
Minecraft Dinosaurs - Part 91 - Argentinosaurus and Naming our Mosasaur
::2013/11/23::
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15
Mundo Saurio: "El Argentinosaurus"
Mundo Saurio: "El Argentinosaurus"
::2014/05/31::
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16
Dinosaur Review 6: Argentinosaurus
Dinosaur Review 6: Argentinosaurus
::2011/12/20::
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17
Dinosaur Train Extreme InterAction Arnie Argentinosaurus --30 sec commercial
Dinosaur Train Extreme InterAction Arnie Argentinosaurus --30 sec commercial
::2012/09/24::
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18
Dinosaur Train Extreme InterAction Arnie Argentinosaurus --15 sec commercial
Dinosaur Train Extreme InterAction Arnie Argentinosaurus --15 sec commercial
::2012/09/24::
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19
planet dinosaur~mapusaurus vs argentinosaurus and carcharodontosaurus vs paralititan
planet dinosaur~mapusaurus vs argentinosaurus and carcharodontosaurus vs paralititan
::2013/06/22::
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20
Dinosaur Train Extreme InterAction Figure Arnie Argentinosaurus Demo
Dinosaur Train Extreme InterAction Figure Arnie Argentinosaurus Demo
::2012/10/10::
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21
Land of Giants - Argentinosaurus
Land of Giants - Argentinosaurus
::2010/03/17::
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22
Mapusaurus rosae vs Argentinosaurus huinculensis (20 Sub Special Part 2!)
Mapusaurus rosae vs Argentinosaurus huinculensis (20 Sub Special Part 2!)
::2014/07/02::
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23
Argentinosaurus Tribute
Argentinosaurus Tribute
::2009/10/24::
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24
Dinosaur Train Walk & Stomp Arnie Argentinosaurus from Tomy
Dinosaur Train Walk & Stomp Arnie Argentinosaurus from Tomy
::2012/08/27::
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25
Tribute to Argentinosaurus
Tribute to Argentinosaurus
::2007/10/13::
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26
Digital Simulation of Earth
Digital Simulation of Earth's Largest Dinosaur, Argentinosaurus huinculensis, Walking
::2013/10/30::
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27
Argentinosaurus Dinosaur Skeleton Part 1 @ Fernbank Museum, Atlanta
Argentinosaurus Dinosaur Skeleton Part 1 @ Fernbank Museum, Atlanta
::2009/04/15::
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28
Dinosaur Train InterAction Arnie Argentinosaurus
Dinosaur Train InterAction Arnie Argentinosaurus
::2012/10/02::
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29
Spinosaurus Vs. Argentinosaurus ~ Pivot
Spinosaurus Vs. Argentinosaurus ~ Pivot
::2011/01/11::
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30
Argentinosaurus Dinosaur Skeleton Part 2 @ Fernbank Museum, Atlanta
Argentinosaurus Dinosaur Skeleton Part 2 @ Fernbank Museum, Atlanta
::2009/04/15::
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31
giganotosaurus vs argentinosaurus
giganotosaurus vs argentinosaurus
::2012/08/15::
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32
Zamba - Nicolás acerca de: el Argentinosaurus
Zamba - Nicolás acerca de: el Argentinosaurus
::2013/07/02::
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33
giganotosaurus vs argentinosaurus
giganotosaurus vs argentinosaurus
::2010/08/12::
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34
Argentinosaurus PT 1 .
Argentinosaurus PT 1 .
::2012/09/17::
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35
The world
The world's largest dinosaur-Argentinosaurus huinculensis -El dinosaurio más grande del mundo
::2011/10/23::
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36
Argentinosaurus Tribute
Argentinosaurus Tribute
::2014/05/04::
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37
Argentinosaurus Update - SPORE
Argentinosaurus Update - SPORE
::2010/10/26::
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38
Recorte Argentinosaurus Giganotosaurus
Recorte Argentinosaurus Giganotosaurus
::2012/05/22::
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39
─►NEW Dinosaur Train InterAction Arnie Argentinosaurus?
─►NEW Dinosaur Train InterAction Arnie Argentinosaurus?
::2013/04/22::
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40
Reconstrucción digital del movimiento de Argentinosaurus
Reconstrucción digital del movimiento de Argentinosaurus
::2013/11/01::
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41
Argentinosaurus Iluzer Arts
Argentinosaurus Iluzer Arts
::2014/07/27::
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42
Argentinosaurus PT 6 .
Argentinosaurus PT 6 .
::2012/09/18::
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43
En las tierras del Argentinosaurus
En las tierras del Argentinosaurus
::2014/05/17::
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Interaction Arnie Argentinosaurus - Dinosaur Train Extreme - Tomy
Interaction Arnie Argentinosaurus - Dinosaur Train Extreme - Tomy
::2012/11/05::
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45
Argentinosaurus Walkby
Argentinosaurus Walkby
::2010/01/24::
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46
Argentinosaurus -Dinosaurio Arg /Dinosaurs- Dinosaures- Dinossauros/
Argentinosaurus -Dinosaurio Arg /Dinosaurs- Dinosaures- Dinossauros/
::2013/07/24::
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Argentinosaurus and Sauropods (made with Spreaker)
Argentinosaurus and Sauropods (made with Spreaker)
::2014/06/14::
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48
UPB: Carnotaurus vs Argentinosaurus
UPB: Carnotaurus vs Argentinosaurus
::2013/06/28::
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49
Buji Dinos - Giganotosaurus vs Argentinosaurus
Buji Dinos - Giganotosaurus vs Argentinosaurus
::2013/08/08::
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Field Station Dinosaurs Argentinosaurus Secaucus NJ
Field Station Dinosaurs Argentinosaurus Secaucus NJ
::2012/05/29::
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From Wikipedia, the free encyclopedia
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Argentinosaurus
Temporal range: Late Cretaceous, 97–94Ma
Argentinosaurus DSC 2943.jpg
Restored skeleton, Naturmuseum Senckenberg
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Suborder: Sauropodomorpha
Clade: Titanosauria
Clade: Lithostrotia
Family: Antarctosauridae
Genus: Argentinosaurus
Bonaparte & Coria, 1993
Species: † A. huinculensis
Binomial name
Argentinosaurus huinculensis
Bonaparte & Coria, 1993
A diorama showing a group of Argentinosaurus herding

Argentinosaurus (AR-jen-TEE-noh-SAW-rus meaning "Argentine lizard"[1]) is a genus of titanosaur sauropod dinosaur first discovered by Guillermo Heredia in Argentina. The generic name refers to the country in which it was discovered. The dinosaur lived on the then-island continent of South America somewhere between 97 and 94 million years ago, during the Late Cretaceous Epoch. It is among the largest known dinosaurs.

Discovery[edit]

The first fossils identified as Argentinosaurus were found in 1987 by a rancher in Argentina, who mistook the leg for a giant piece of petrified wood. A gigantic backbone was also found, and was almost as high as a man.[1]

The type species of Argentinosaurus, A. huinculensis, was described and published in 1993 by the Argentine palaeontologists José F. Bonaparte and Rodolfo Coria. Its more specific time-frame within the Cretaceous is the late Cenomanian faunal stage, ~96 to 94 million years ago. The fossil discovery site is in the Huincul Formation of the Río Limay Subgroup in Neuquén Province, Argentina (the Huincul Formation was a member of the Río Limay Formation according to the naming of the time).[2]

Description[edit]

Restoration

Not much of Argentinosaurus has been recovered. The holotype included only a series of vertebrae (six from the back, five partial vertebrae from the hip region), ribs of the right side of the hip region, a part of a rib from the flank, and the right tibia (lower leg bone). One of these vertebra had a length of 1.59 meters (spine to the ventral border) and the tibia was about 155 centimeters (58 inches).[2] In addition to these bones, an incomplete femur (upper leg bone, specimen number MLP-DP 46-VIII-21-3) is assigned to Argentinosaurus; this incomplete femur shaft has a minimum circumference of about 1.18 meters.[3] The proportions of these bones and comparisons with other sauropod relatives allow paleontologists to estimate the size of the animal.

Size[edit]

Size comparison between Argentinosaurus (shown in purple) and a human.

An early reconstruction by Gregory S. Paul estimated Argentinosaurus at between 30–35 metres (98–115 ft) in length and with a weight of up to 80–100 tonnes (88–110 short tons).[4][5] The length was also found by Benson et al. (2012).[6] In 2007, a similar length of 35 metres (115 ft) was found by Tim Haines and Paul Chambers, but a larger weight of 90 tonnes (89 long tons; 99 short tons) was also found.[1] The length of the skeletal restoration mounted in Museo Carmen Funes is 39.7 metres (130 ft) long and 7.3 metres (24 ft) high. This is the longest reconstruction in a museum and contains the original material, including a mostly complete fibula.[7] Other estimates have compared the fragmentary material to relatively complete titanosaurs to help estimate the size of Argentinosaurus. In 2006 Carpenter used the more complete Saltasaurus as a guide and estimated Argentinosaurus at 30 metres (98 ft) in length.[8] An unpublished estimate used published reconstructions of Saltasaurus, Opisthocoelicaudia, and Rapetosaurus as guides and gave shorter length estimates of between 22–26 metres (72–85 ft).[9] Weight estimates are less common, but Mazzetta et al. (2004) provide a range of 60–88 tonnes (66–97 short tons), and consider 73 tonnes (80 short tons) to be the most likely, making it the heaviest sauropod known from good material.[3] More recently, it was estimated at 83,230 kg by calculating the volume of a reconstruction.[7]

Paleobiology[edit]

Biomechanics and speed[edit]

Reconstructed skeleton used to estimate speed, Museo Municipal Carmen Funes, Plaza Huincul, Argentina

In 2013, in a study published in Plos One on October 30, 2013 by Dr. Bill Sellers, Rodolfo Coria, Lee Margetts et al, Argentinosaurus was digitally reconstructed to test its locomotion for the first time. Before this study, the most common way of estimating speed was through studying bone histology and ichnology. Commonly, studies about sauropod bone histology and speed focus on the postcranial skeleton which holds many unique features, such as an enlarged process on the ulna, a wide lobe on the ilia, an inward-slanting top third of the femur, and an extremely ovoid femur shaft. Those features are useful when attempting to explain trackway patterns of graviportal animals. When studying ichnology to calculate sauropod speed, there are a few problems, such as only providing estimates for certain gaits because of preservation bias, and being subject to many more accuracy problems.[7]

To estimate the gait and speed of Argentinosaurus, the study performed a musculoskeletal analysis. The only previous musculoskeletal analyses were conducted on hominids, terror birds, and other dinosaurs. Before they could conduct the analysis, the team had to create a digital skeleton of the animal in question, show where there would be muscle layering, locate the muscles and joints, and finally find the muscle properties before finding the gait and speed. The results of the biomechanical study revealed that Argentinosaurus was mechanically competent at a top speed of 2 m/s (5 mph) given the great weight of the animal and the strain that its joints were capable of bearing. The results further revealed that much larger terrestrial vertebrates might be possible, but would require significant body remodeling and possibly behavioral change to prevent joint collapse.[7][10]

Digestion[edit]

Argentinosaurus was, like all sauropods, a herbivore. It probably used its long neck to reach into conifers, or sweep the ground in search of ferns and bushes. Once swallowed, the food would have needed to travel all the way down the neck before entering the stomach. Inside the stomach, the vegetation would have been ground or broken down by smooth stones known as gastroliths.[1]

Growth[edit]

Argentinosaurus femur, Museo de La Plata.

Argentinosaurus adults were some of the largest animals ever, but their hatchlings were not. One article found that Argentinosaurus hatchlings would have had to grow 25,000 times their original size before reaching adult size. Argentinosaurus probably traveled in herds of a few dozen animals, including juveniles. Young animals were vulnerable to attacks from predators. It is thought that only a handful of juveniles would be lucky enough to make it into adulthood. Sauropods related to Argentinosaurus have had fossilized eggs preserved. These eggs indicate that every year, hundreds of adults would gather just to nest. Wide, flat floodplains have been identified as the preferred nesting sites. The eggs were around 22 centimetres (8.7 in) in diameter, and each adult probably laid large numbers of eggs each season. Once hatched, it took about 15 years for the tiny hatchlings to reach adulthood, and gigantic size.[1]

Popular culture[edit]

"Argentinosaurus" was featured in the BBC television special "Land of Giants" of the Walking with Dinosaurs spin-off Chased by Dinosaurs, where it was depicted with an inaccurate skull design. Argentinosaurus is featured prominently in the permanent exhibition Giants of the Mesozoic at Fernbank Museum of Natural History in Atlanta, Georgia, USA. This display depicts a hypothetical encounter between Argentinosaurus and the carnivorous theropod dinosaur Giganotosaurus. Contemporary fossils of Cretaceous Period plants and animals are included in the exhibition, including two species of pterosaurs, providing a snapshot of a prehistoric ecosystem in what is now the modern Patagonia region of Argentina. At 35 m (117 ft) long, this skeletal reconstruction represents one of the largest dinosaur mounts ever to be assembled.[citation needed]

References[edit]

  1. ^ a b c d e Haines, T.; Chambers, P. (2007). The Complete Guide to Prehistoric Life. Italy: Firefly Books Ltd. pp. 118–119. ISBN 1-55407-181-X. 
  2. ^ a b (Spanish) Bonaparte J, Coria R (1993). "Un nuevo y gigantesco sauropodo titanosaurio de la Formacion Rio Limay (Albiano-Cenomaniano) de la Provincia del Neuquen, Argentina". Ameghiniana 30 (3): 271–282. 
  3. ^ a b Mazzetta, Gerardo V.; Christiansen, Per; Fariña, Richard A. (2004). "Giants and Bizarres: Body Size of Some Southern South American Cretaceous Dinosaurs" (PDF). Historical Biology 16 (2-4): 71–83. doi:10.1080/08912960410001715132. Retrieved 2008-01-08. 
  4. ^ Paul, Gregory S. (Fall 1994). "Big Sauropods - Really, Really Big Sauropods". The Dinosaur Report. The Dinosaur Society. pp. 12–13. 
  5. ^ Paul, Gregory S. (1997). "Dinosaur models: the good, the bad, and using them to estimate the mass of dinosaurs". In Wolberg, D. L.; Stump, E.; Rosenberg, G. D. DinoFest International Proceedings. The Academy of Natural Sciences. pp. 129–154. 
  6. ^ Benson, R.B.J.; Brussatte, S. & Xu, X. (2012). Prehistoric Life. London: Dorling Kindersley. p. 332. ISBN 978-0-7566-9910-9. 
  7. ^ a b c d Sellers, W. I.; Margetts, L.; Coria, R. A. ­B.; Manning, P. L. (2013). "March of the Titans: The Locomotor Capabilities of Sauropod Dinosaurs". In Carrier, David. PLoS ONE 8 (10): e78733. doi:10.1371/journal.pone.0078733. PMC 3864407. PMID 24348896.  edit
  8. ^ Carpenter, Kenneth (2006). "Biggest of the Big: A Critical Re-Evaluation of the Mega-Sauropod Amphicoelias fragillimus Cope, 1878". In Foster, John R.; Lucas, Spencer G. Paleontology and Geology of the Upper Jurassic Morrison Formation 36. New Mexico Museum of Natural History and Science Bulletin. pp. 131–138. 
  9. ^ Mortimer, Mickey (2001-09-12). "Titanosaurs too Large?". Dinosaur Mailing List. Retrieved 2009-01-08. 
  10. ^ "Argentinosaurus"

External links[edit]

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