neogene

adjective

1. noting or pertaining to an interval of time corresponding to the Miocene and Pliocene epochs and accorded the status of a period when the Tertiary is considered an era.Compare Paleogene.

noun

2. the Neogene Period or System.

adjective

1. of, denoting, or formed during the Miocene and Pliocene epochs

noun

2. the Neogene the Neogene period or system

1. The youngest of two subdivisions of the Tertiary Period, including the Miocene and Pliocene Epochs.