The Itaboraian age is a period of geologic time (59.0—57.0 Ma) within the Paleocene epoch of the Paleogene used more specifically with South American Land Mammal Ages. It follows the Peligran and precedes the Riochican age.
This age is named after Itaboraí, a Greater Rio municipality in the state of Rio de Janeiro in Brazil not very far away from Niterói.
References
Itaboraian Wikipedia(Text) CC BY-SA