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IMAGE: The skull of the type specimen of Besanosaurus leptorhynchus is characterized by extreme longirostry (i.e., thin elongate snout), and equipped with tiny pointed teeth, perfect for catching small fish and. view more
Credit: Gabriele Bindellini and Marco Auditore, © Museo di Storia Naturale di Milano.
Middle Triassic ichthyosaurs are rare, and mostly small in size. The new
Besanosaurus specimens described in the peer-reviewed journal
PeerJ - the
Journal of Life and Environmental Sciences - by Italian, Swiss, Dutch and Polish paleontologists provide new information on the anatomy of this fish-like ancient reptile, revealing its diet and exceptionally large adult size: up to 8 meters, a real record among all marine predators of this geological epoch. In fact,
Il Besanosauro della Valceresio non è più solo: trovati altri 5 esemplari inediti
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Escavação em rodovia de SP revela fósseis de dinossauros
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Escavação em rodovia de SP revela fósseis de dinossauros - Ambientebrasil
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A whole lot of Tyrannosaurus rexes used to rule the planet.
Seth Borenstein
One Tyrannosaurus rex seems scary enough. Now picture 2.5 billion of them. That’s how many of the fierce dinosaur king probably roamed Earth over the course of a couple million years, a new study finds.
Using calculations based on body size, sexual maturity and the creatures’ energy needs, a team at the University of California, Berkeley figured out just how many T. rex lived over 127,000 generations, according to a study in Thursday’s journal Science. It’s a first-of-its-kind number, but just an estimate with a margin of error that is the size of a T. rex.