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2011 | 56 | 4 |
Tytuł artykułu

The first giant titanosaurian sauropod from the Upper Cretaceous of North America

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Argentinosaurus(Cenomanian, Argentina) is generally accepted as being the largest dinosaur so far discovered and is one of several giant titanosaurian sauropods known from the Upper Cretaceous of South America and Asia, but surprisingly not from North America. Here we present the first evidence of giant titanosaurian sauropods from the Upper Cretaceous of North America: two enormous vertebrae and a partial femur, from the Naashoibito Member of the Ojo Alamo Formation, New Mexico, and referred to Alamosaurus sanjuanensis. One of the new vertebrae, a posterior cervical, is comparable in size to a posterior cervical described for Puertasaurus: an Argentinosaurus−sized titanosaurian from the Maastrichtian of Argentina. This makes A. sanjuanensisthe largest dinosaur from North America, and among the largest in the world. These findings indicate that A. sanjuanensis is diagnosed based on immature remains, which may have implications for cladistic analyses.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
56
Numer
4
Opis fizyczny
p.685-690,fig.,ref.
Twórcy
autor
  • Museum of the Rockies and Department of Earth Sciences, Montana State University, 600 West Kagy Blvd, Bozeman, Montana
  • The State Museum of Pennsylvania, 300 North St., Harrisburg, PA 17120
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-4a33ad41-bb4b-4df7-b926-b0b2e042014e
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