The Alcântara Formation is a geological

formation Formation may refer to: Linguistics * Back-formation, the process of creating a new lexeme by removing or affixes * Word formation, the creation of a new word by adding affixes Mathematics and science * Cave formation or speleothem, a secondary ...

northeastern The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each sepa ...

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

whose strata date back to the Cenomanian of the

Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', ...

Fossil content

Dinosaurs

Pterosauria

Crocodylomorphs

Turtles

Squamates

Fish

References

{{DEFAULTSORT:Alcantara Formation Geologic formations of Brazil Upper Cretaceous Series of South America Cretaceous Brazil Cenomanian Stage Sandstone formations Shale formations Conglomerate formations Shallow marine deposits Fossiliferous stratigraphic units of South America Paleontology in Brazil Formations