Alamosaurus
Alamosaurus: Geology students recently discovered a rare, nearly complete fossil of Alamosaurus at Big Bend National Park, United States.
- About: Alamosaurus is one of the largest dinosaurs ever known.
o Lived during the Late Cretaceous period (100.5 to 66 million years ago).
o Herbivorous sauropod with armoured spikes on its back for protection against predators.
o Belonged to sauropods, the largest land animals to ever evolve.
o Only known sauropod in North America from the Upper Cretaceous.
o Largest terrestrial animal in North America during the Upper Cretaceous.
o Rivalled in size with South America's Argentinosaurus (lived 97–92 million years ago).
o Had a long neck, tail, and pillar-like limbs typical of sauropods.
o Went extinct in the Cretaceous–Paleogene extinction event; among the last non-avian dinosaurs.
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