Which group was first formed between Dinosaur Pile-Up and Enanitos Verdes?
Enanitos Verdes Enanitos Verdes (Literally "Little green dwarfs", roughly equivalent to the English phrase "Little green men") is a rock trio from Argentina, formed in 1979 in the city of Mendoza.
La Negra Formation La Negra Formation (Spanish: "Formación La Negra" ) is a geologic formation of Jurassic age, composed chiefly of volcanic and volcaniclastic rocks, located in the Coast Range of northern Chile. The formation originated in marine and continental (terrestrial) conditions, and bears evidence of submarine volcanism as well as large explosive eruptions. The volcanism of La Negra Formation is thought to have lasted for about five million years.