The Orinoco Basin is the part of South America drained by the Orinoco river and its tributaries. The Orinoco watershed covers an area of about 990000 km2...

The Orinoco (Spanish pronunciation: [oɾiˈnoko]) is one of the longest rivers in South America at 2,140 km (1,330 mi). Its drainage basin, sometimes known...

Colombia east into the Orinoco Ashepoo River: along with the Edisto and the Combahee Rivers in South Carolina makes up the ACE Basin National Wildlife Refuge...

upper Orinoco flowing southward into the Rio Negro, in Venezuela, South America. As such, it forms a unique natural canal between the Orinoco and Amazon...

as angelfish. All Pterophyllum species originate from the Amazon Basin, Orinoco Basin and various rivers in the Guiana Shield in tropical South America...

three subspecies are distributed in the Amazon basin, the upper Madeira River in Bolivia, and the Orinoco basin, respectively. The Amazon river dolphin is...

River Wenamu River Corumpo River Yuruarí River Supamo River Kamarang River Orinoco River Rio Grande (distributary, empties into the Boca Grande) Barima River...

The Orinoco Belt is a territory in the southern strip of the eastern Orinoco River Basin in Venezuela which overlies the world's largest deposits of petroleum...

The Orinoco Delta is a vast river delta of the Orinoco River, located in eastern Venezuela. The Orinoco Delta is one of the eight natural regions of Venezuela...

the Amazon Basin, Orinoco Basin and river basins in The Guianas. The only exceptions are A. plagiozonatus which also occurs in the Paraná Basin, and A. tetramerus...