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Below are scientific descriptions that explain the paleontological reconstructions and exhibition models available to rent.
The classification of the model and the texts have been provided by Cristiano Dal Sasso (Natural History Museum of Milan).

Allosaurus fragilis

formal name: Allosaurus fragilis
order: Saurischia theropoda
diet: carnivorous
maximun size: 12 metres in length, 3 tons in weight
principal areas of fossil discovery: North America
mesozoic era: Late Giurassic (142 million years ago)

The Allosaurus is one of the better known carnivorous dinosaurs, thanks to numerous skeletons found by paleontologists. It was the most formidable predator of the North American Jurassic era. Allosaurus' teeth were sharp and hooked, enabling it to hold its prey and to slice the thick skin of large herbivorous dinosaurs. The forelimbs had three claws on each limb that it used to catch its prey. The Allosaurus wasn't large enough to catch an adult Apatosaurus alone, so it is probable that it hunted in groups or preyed on the young, ill or old. The thing that distinguished it from other carnivorous dinosaurs was two horns just above the eyes, which possibly identified the male from the female. Between Colorado and Utah there is a large deposit of fossil bones called Dinosaur National Monument that contains hundreds of Allosaurus bones as well as those of other dinosaurs.

Tarchia gigantea

formal name: Tarchia gigantea
order: Ornithischia ankylosauria
diet: herbivorous
maximun size: 8 meters in length, 3 tons in weight
principal areas of fossil discovery: East Asia
mesozoic era: Late Cretaceous (65 million years ago)

A young Ankylosaurus is represented here as an example of the Tarchia species, and is often considered the archetypal armoured dinosaur. The head, neck, back and tail were covered with a mosaic of hard knobs and plates of bone. Unlike turtles the armour was not a rigid and complete block but was arranged in horizontal rows, permitting movement. This armour provided protection against carnivorous dinosaurs. The head of Ankylosaurus was short, large and triangular in shape, and wider than it was long.

"antonio"

formal name: yet to be decided
order: Ornithischia hadrosauridae
diet: herbivorous
maximun size: 4 meters in length, 500 kilograms in weight
principal areas of fossil discovery: South Europe
mesozoic era: Late Cretaceous (65 million years ago)

Reconstruction of a beaked dinosaur in the order of Ornithischia. Its fossil, found in Trieste - Italy in 1998, is still being studied. It is the third dinosaur skeleton that has been found in Italy; the first and most famous is "Ciro" ( formal name: Scipionyx Samniticus), an infant carnivorous dinosaur found in 1980 in Benevento. The second was a "Saltriosauro", an 8 metre high predator found in 1996 in Varese. Like all the hadrosaurus, "Antonio" had a large, flat face similar to a duck's beak, perfect for stripping leaves and grass. Some beaked dinosaurs have been found fossilized with soft parts as well as the bones, like natural mummifications.

Apatosaurus louisae

formal name: Apatosaurus louisae
order: Saurischia sauropoda
diet: herbivorous
maximun size: 25 meters in length, 30 tons in weight
principal areas of fossil discovery: North America
mesozoic era: Late Giurassic (142 million years ago)

This dinosaur was called Brontosaurus until a few years ago when palaeontologists discovered that its bones were the same as those of another animal that had already been studied and named Apatosaurus. The Apatosaurus is one of the most common dinosaurs and it is a good representiation of the Sauropods group, easily recognizable for the spectacular lenght of the neck and tail. All the Sauropods were herbivorous, with small heads and strong column like legs supporting a body of up to 50 tons. As you can see from the model above the Sauropods were quadrupeds but could also stand on the hind legs and sit on the tail in order to reach the highest tree branches.

Coelophysis bauri

formal name: Coelophysis bauri
order: Saurischia theropoda
diet: carnivorous
maximun size: 3 meters in length, 30 kilograms in weight
principal areas of fossil discovery: Central America
mesozoic era: Late Triassic (215 million years ago)

Thanks to finding the bones of young Coelophysis inside adult skeletons, paleontologists discovered that this species of dinosaur was cannibalistic. The Coelophysis is a very primitive dinosaur. It possessed four digits on the hand and five on the foot. It was a lightly built dinosaur, with a long neck and tail, a small head and elongated snout. This and other types of small dinosaurs lived in large colonies like sea birds. Infact hundreds of skeletons have been found fossilized together.

Hypsilophodon foxii

formal name: Hypsilophodon foxii
order: Ornithischia ornithopoda
diet: herbivorous
maximun size: 2 meters in lenght, 25 kilograms in weight
principal areas of fossil discovery: North Europe
mesozoic era: Early Cretaceous (100 millon years ago)

Hypsilophodon (meaning "high-crested tooth") was a small bipedal dinosaur with a herbivorous diet. It is considered the ancestor of Iguandodons and other large herbivorous dinosaurs in the Ornithopods family. Hypsilophodon had a short and triangular skull. Studies on the eye sockets have shown that this dinosaur had acute vision that permitted it to see well in the dark. You can learn about the diet of dinosaurs from studying the coprolites: fossilized fecal matter, often containing seeds, bones and other foods.

Oviraptor philoceratops

formal name: Oviraptor philoceratops
order: Saurischia theropoda
diet: omnivorous
maximun size: 2 meters in length, 30 kilograms in weight
principal areas fossil discovery: Central Asia
mesozoic era: Late Cretaceous (65 million years ago)

Oviraptor's name is Latin for "egg thief". The first skeleton was found by American palaeontologists in the Gobi desert in 1922 and was named in reference to the fact it was found atop a nest of what were thought to be Protoceratops eggs. However, in 1994 other Oviraptor specimens were found on nests so it is now believed that these dinosaurs died while brooding their own eggs. The Oviraptor had a body like a carnivorous dinosaur but with a rounded head and a parrot like beak. In confirmation that the nests did indeed belong to Oviraptor, was the discovery of an embryo within one of the eggs.

Protoceratops andrewsi

formal name: Protoceratops andrewsi
order: Ornithischia ceratopsia
diet: omnivorous
maximun size: 2 meters length, 60 kilograms in weight
principal areas of fossil discovery: East Asia
mesozoic era: Late Cretaceous (65 million years ago)

With its neck frill and one slightly developed facial horn, Protoceratops is one of the primitive horned dinosaurs. The discovery of numerous skeletons of infant, young and adult dinosaurs, found in the Gobi desert, permitted paleontologists to study its phases of growth. Protoceratops existence is comparable to that of pigs, in that it foraged for root vegetables which it mashed with numerous back teeth before swallowing into the big stomch. It is possible the beak could also have been used as a weapon of defense. It is thought that some animals of popular myth and folklore have been invented after the finding of fossils. For example, the Griffin Myth could have been based on the discovery of a protoceratops skull found in Medieval times.

Tapejara imperator

formal name: Tapejara imperator
order: Pterosauria pterodactyloidea
diet: fish eater
maximun size: wing span of 5 meters, 12 kilograms in weight
principal areas of fossil discovery: South America
mesozoic era: Early Cretaceous (100 million years ago)

Pterosaurs were not dinosaurs but flying reptiles so should not be confused with bird ancestors, that were covered with primitive feathers. Like all pterosaurs the tapejara had long arms that formed wings similar to those of bats. The bones of the arm and fourth finger were developed to support the membrane of skin similar to the propatagium of bats. Pterosaur was extremely light due to its hollow bones, small body and wing membrane allowing it to fly. The tapejara didn't have teeth but a short beak, ideal for catching small fish or eating small fruits and berries. On its beak Pterosaur had a high crest which could have been used as a rudder for flying or simply as a sign of recognition.

Velociraptor mongoliensis

formal name: Velociraptor mongoliensis
order: Saurischia theropoda
diet: carnivorous
maximun size: 1,8 meters in length, 18 kilograms in weight
principal areas of fossil discovery: Central Asia
mesozoic era: Late cretaceous (65 million years ago)

Velociraptor was an extremely agile and fast but small predator, infact it would grow to no larger than 2 metres in lenght and 20 kilograms in weight. The tail was long and thin with bony projections along the vertebrae. The anatomical structure of this dinosaur is similar to that of primitive birds, infact paleontologists are convinced that modern birds are decended from carnivorous dinosaurs. Like all the "raptors", this dinosaur had a unique weapon: a sickle-shaped claw in the second digit, used to tear into prey.

Triceratops horridus

formal name: Triceratops horridus
order: Ornithischia ceratopsia
diet: herbivorous
maximun size: 8 meters in length, 6 tons in weight
principal areas of fossil discovery: North America
mesozoic era: Late Cretaceous (65 million years ago)

Triceratops is the best known of the Ceratopsids (the horned dinosaurs). Here we can see a carcass half eaten by a predator. This type of dinosaur with a parrot like beak, large bony frill and horns, was a dominent herbivor of the Late Cretaceous Period. The Triceratops, as the name suggests, had three horns that were used as a defensive weapon against T.rex attacks. The teeth were small and numerous forming blades for shearing vegetables. Its large body was supported by four robust legs with hoof like feet, similar to a rhinoceros.

Tyrannosaurus rex

formal name: Tyrannosaurus rex
order: Saurischia theropoda
diet: carnivorous
maximun size: 12,5 meters in length, 6,5 tons in weight
principal areas of fossil discovery: North America
era mesozoica: Late Cretaceous (65 million years ago)

The most distinguishable features of Tyrannosaurus were the enormous head and tiny fore arms, which were so small it is still unclear what purpose they could have served. The jaws were extremely powerful and lined with sharp teeth measuring up to 20 cm in length and strong enough to break the bones of even the largest dinosaurs. The teeth were serrated like kitchen knives to effectively mince its prey. Some paleontologists believe that T.rex, as well as being an active predator, was also a scavenger. Until a few years ago it was thought that a carnivorous dinosaur larger than T.rex didn't exsist, but the discovery of Carcharodontosaurus (in Africa) and Giganotosaurus (in South America) surpassed this. Like every carnivorous dinosaur T.rex was bipedal, so the muscles of the back legs were incredibly large and strong. Studies of complete skeletons have shown that T.rex could grow up to 14 metres long and up to 7 tons in weight.