The fossil regions could be divided of the following way:
• Northwest Zone (Salta)
• West Zone (Mendoza -San Juan- La Rioja)
• East Zone (Entre Ríos-Misiones)
• Central Zone (San Luis-Córdoba)
• South Zone (Patagonia)

West Zone (Mendoza -San Juan- La Rioja)
Most important deposits at world-wide level with rest of the first dinosaurs, from the Triásico Period (240 to 205 million years), come from gray sediments of the Ischigualasto Formation, prov. of San Juan.

There have been primitive terópodos like Eoraptor and Herrerasaurus, as well as ornistiquio Pisanosaurus, the oldest representative of this group at world-wide level.

These deposits can be visited popularly in the Provincial Park Ischigualasto, known like "the Valley of the Moon". There are a suitable center of interpretation and guided visits.

Another rich deposit that involves later sediments to Ischigualasto, is of the Colored, aflorante formation in the province of La Rioja and the Mountain range of Mogna, in San Juan. From dinosaurs prosaurópodos like Coloradisaurus and Riojasaurus come there.

Their rest can be observed in the exhibitions of the museum of the Institute Miguel Lillo de Tucumán and of the University of La Rioja. Related Articles

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Also from these sediments dinosaur carnivorous with crests in the head, found by the paleontólogos Rougier and Reuil comes impressive, and that are at the moment in study by Andrea Arcucci and Rodolfo Coria.

These outcrops are in the area of the today National Park Talampaya, place of impressive natural beauty, with cañónes of arenaceous stops paredones of reddish that can be crossed with the company of the guides.


Northwest Zone (Salta)
No stage of the history of the dinosaurs is so well represented in our country like the delayed Cretácico.

Outcrops corresponding to sediments deposited in that time can be found to the south of Jumps, from where titanosaurio Saltasaurus comes small, that had the back covered with hard bony plates; the small Noasaurus carnivore, of sharpened claws; perhaps a relative of the Oviraptor and primitive rest of birds that still had teeth.

The findings of first are in the collections of the institute Miguel Lillo, of Tucumán, that has a small museum.



East Zone (Entre Ríos-Misiones)
Little known outcrops cretácicos they are frequent in the zone of Columbus (Prov. Entre Ríos).

From rest of saurópodo Argyrosaurus, and its eggs come there, a carnivore as large as tiranosaurio, and ankylosaurio covered with armor.

All of them lived towards the end the time of the dinosaurs, In the superior Cretácico.

Some of those bones can see in the Museum of Diamond and others in the colorful but very recommendable personal museum of the Dr Mateo Zelich, in the small town of Liebig, not far from Colón.

Some bones of dinosaurs have also been collected in Misiones, but they are not had I decipher suitably.


Central Zone (San Luis-Córdoba)
Although the pterosaurios were not dinosaurs but flying reptiles, its rare aspect also makes object of great curiosity. Of deposits of 120 million years back, in the beautiful Mountain range of the Jaws, quite complete rest of pterosaurio Pterodaustro have been collected guinazui.

In the Museum of the University of Cordova, on the other hand, they have originating rest of several places of the country, but without a doubt but the amazing thing they are the insects and plants of Under Véliz, that include giant much but old spiders that the dinosaurs.


South Zone (Patagonia)
This zone is but the dificil one to catalogue, since its enormous amount of fossils causes that almost each place is interesting paleontologically.

To the west of Neuquén and the south of Mendoza, in the sediments that constituted in the Jurásico the bottom of the Neuquino Gulf, an entrance of the Pacific Ocean previous to the sprouting of the Mountain range of the $andes, the paleontólogos have found and studied a great variety of marine organisms like amonites (relatives of pulpy and calamaries), and several marine like aquatic turtles, ictiosaurios reptiles (great reptiles with dolphin aspect), plesiosaurios (of long necks and powerful fins) and once in a while some pterosaurio or flying reptile, that inhabited the coastal zones and ended up dying in the sea.

Already on the continent, they left to its rest and signals of passage throughout our country the surprising dinosaurs, group that began to dominate terrestrial atmospheres from ends Triásico Period.

In diverse regions, the nature contributed to preserve them in sedimentarios deposits. Rest of these giants of the sea can be visited in the Olsacher Museum, the city of Zapala and ictiosaurio of more than 4 meters exhibited in the Argentine Museum of Natural Sciences in Buenos Aires.

The period better represented in our country is without a doubt the Cretácico (138 to 63 million years).

Even to the west of Neuquén, in the beautiful zone of the Chinese river Dead, throughout route 40, has been collected dinosaurs of the inferior part of the Cretacico, like the rest of the formidable thorny saurópodos Amargasaurus and Agustinia and the very small Ligabueino carnivore, but small who a chicken.

In the neighborhoods of the Chocón and towards the last moments of the early Cretácico, the beginning of a time of true giants began to outline itself, as it is reflected in the colossal Giganotosaurus carnivore, exhibition in the museum of the Chocón.

Also saurópodos varied like titanosaurio primitive Andesaurus and the diplodocoide Rebbachisaurus, whose original rest can be contemplated in the museum of the National University of the Comahue, in the city of Neuquén.

In addition, very little distance of the Chocón, fields of original tracks of these dinosaurs can be visited.

Already in the heat of delayed Cretácico, emphasizes the "raptor" giant Megaraptor, Unenlagia - nearly become related the birds -, the surprising Patagonykus, of strong and short arms armed single with a great nail, and the unexpected "araucano raptor" whose known nearer relatives are of North America and Asia.

All these dinosaurs, as well as the gigantic saurópodos Antarctosaurus and Argentinosaurus, that are between the greatest dinosaurs of the world, are in exhibition in the Museum Carmen Funes, of the city of Huincul Seat.

The deposits of where they come are so near the city which although not yet there are organized visits, is probable that soon they are offered.

Also from Neuquén the small and graceful carnivorous dinosaurs Alvarezsaurus and Velocisaurus come, that lived between long serpents and abundantísimos terrestrial crocodiles, all in exhibition in the Museum of the National University of the Comahue, city of Neuquén.

Something more rustic but beautiful and plagued of fossils is the Museum of corner of the Willows, in the north of Neuquén.

The province of Negro River has been a goal for the paleontólogos from century principles, in special in the zone of Five Jumps, where a very small full museum of original bones of the zone works, including the only articulated unit of a Neuquensaurus australis.

Tracks of great ornitópodos in the neighborhoods of the Chocón

There were several types more of titanosaurios saurópodos like Pellegrinisaurus and Rocasaurus.

From his sediments the enormous Abelisaurus carnivore also comes, with a skull of almost a meter of length, exhibited in the museum of Cippoletti, and the small and graceful ornitópodos Gasparinisaura, herbívoros and minors who a chicken.

From the South margin of the rivers Limay and Negro, one of the explored zones less but with an important paleontological wealth, comes several hadrosaurios or dinosaurs of tip of duck like Kritosaurus, whose skeletons can be observed in museums like the one of Cippolleti, the one of Jacobacci Engineer, the one of Lamarque, the one of Buenos Aires and the one of Trelew.

But in addition some surprising dinosaurs like titanosaurio Aelosaurus and great zones to nesting that would have corresponded to the most abundant herbívoros of then: the titanosaurios.

The province of Chubut has offered much more the little rest of the Jurásico (205 to 138 million years), with fauna Cóndor the hill, like the spectacular rest of great saurópodo Patagosaurus, of which I am a whole family, and the Piatnitzkysaurus carnivore, whose skeletons are exhibited in the Argentine Museum of Natural Sciences "Bernardino Rivadavia" of Buenos Aires and in the Paleontological Museum Egidio Feruglio, of Trelew.

Ademas, the museum of Trelew counts on exits to the land to visit the Miocene deposit of the Paleontological Park Miocene Bryn Gwinn, in the near valley of the Chubut river. Ademas, for but the small ones, offers the fascinating experience to sleep in the museum (imperdible: with stock market to sleep and toothbrush).

Much more to the south, in the province of Santa Cruz, they have appeared fossil incredible, like the formidable nest of the prosaurópodos Mussaurus containing several "pichones". These animals lived in an atmosphere of leafy forests that today, petrified, can be visited in the National Natural Monument of the Petrified Forests. The rest of the small dinosaurs are in the Museum of Buenos Aires. In Santa Cruz, the jurásicos dinosaurs have only left tracks us, like those of the surprising Sarmientichnus carnivore. When walking it supported single two of the fingers of his legs, unlike the three of the legs of the terópodos.

Perhaps it is indication that it took the other finger in stop, with a powerful claw to the way of the "raptores" Imperdibles are the tracks of the small Ameghinichnus mammal there patagonicus.

No of these santacrucenses deposits still has been prepared for the visits of the public, but their fossils can be seen in the Museum of Buenos Aires.