Paolo Casagranda

Paolo Casagranda

Paolo Casagranda
Altre idee da Paolo
Dunkleosteus head: it was a placoderm a sort of "fish" covered with armour plates, it lived in Devonian (408million years ago). It could reach 8/10 metres length and had the most powerful bite of any fish, well ahead of sharks, including the Great White. Dunkleosteus could concentrate a force of up to 8,000 pounds (3,628 kg) per square inch at the tip of its mouth, effectively placing it in the league of T Rex. It could open its mouth in one-fiftieth of a second.

Dunkleosteus head: it was a placoderm a sort of "fish" covered with armour plates, it lived in Devonian (408million years ago). It could reach 8/10 metres length and had the most powerful bite of any fish, well ahead of sharks, including the Great White. Dunkleosteus could concentrate a force of up to 8,000 pounds (3,628 kg) per square inch at the tip of its mouth, effectively placing it in the league of T Rex. It could open its mouth in one-fiftieth of a second.

This is a rare Cenoceras nautilus from Belmont, France. It is 5 inches in diameter and is free-standing on a sculpted block of matrix.

This is a rare Cenoceras nautilus from Belmont, France. It is 5 inches in diameter and is free-standing on a sculpted block of matrix.

Crinoids Uintacrinus Socialis - Smithsonian National Museum of Natural History, Washington, D.C.

Crinoids Uintacrinus Socialis - Smithsonian National Museum of Natural History, Washington, D.C.

Pikaia gracilens, the earliest known human ancestor. Fossils from the Burgess Shale Formation dating back 505 million years preserve animals which are the oldest life forms ever discovered with primitive spinal cords. As the precursor of vertebrates the species is also believed to be the direct ancestor of all members of the chordate family, which includes fish, birds, reptiles, amphibians and mammals

Pikaia gracilens, the earliest known human ancestor. Fossils from the Burgess Shale Formation dating back 505 million years preserve animals which are the oldest life forms ever discovered with primitive spinal cords. As the precursor of vertebrates the species is also believed to be the direct ancestor of all members of the chordate family, which includes fish, birds, reptiles, amphibians and mammals

The Fabric Of Reality -- NIK SPENCER/NATURE; Panel 4 adapted from Budd, T. & Loll, R. Phys. Rev. D 88, 024015 (2013)

The Fabric Of Reality -- NIK SPENCER/NATURE; Panel 4 adapted from Budd, T. & Loll, R. Phys. Rev. D 88, 024015 (2013)

la tipica Pizza Cilentana, condita con salsa di pomodoro cotta e formaggio pecorino

la tipica Pizza Cilentana, condita con salsa di pomodoro cotta e formaggio pecorino

An unusual new fossil discovery of one of the earliest animals on earth may also provide the oldest evidence of muscle tissue – the bundles of cells that make movement in animals possible. The find is 550 million ears old and comes from Newfoundland. bg

An unusual new fossil discovery of one of the earliest animals on earth may also provide the oldest evidence of muscle tissue – the bundles of cells that make movement in animals possible. The find is 550 million ears old and comes from Newfoundland. bg

Fossilised spider 'biggest on record' The female, which lived about 165 million years ago, belongs to a collection of spiders well known today - the golden orb weavers. Until this new fossil turned up in Inner Mongolia, the most ancient example from this grouping, or genus, was about 35 million years old.

Fossilised spider 'biggest on record' The female, which lived about 165 million years ago, belongs to a collection of spiders well known today - the golden orb weavers. Until this new fossil turned up in Inner Mongolia, the most ancient example from this grouping, or genus, was about 35 million years old.

c7e343a2c25e3b7fdc14cab9bea9ae17.jpg 397×600 pixel

c7e343a2c25e3b7fdc14cab9bea9ae17.jpg 397×600 pixel

velociraptor and protoceratops fossilized together, still locked in battle

velociraptor and protoceratops fossilized together, still locked in battle