Input (grade 10): Its name comes from the Greek words (', â lessâ) and (', â newâ) and means "less recent" because it has 18% fewer modern sea invertebrates than the Pliocene.
Output (grade 10): Its name comes from the Greek words (', â lessâ) and (', â newâ) and means "less recent", because it has 18% fewer modern sea invertebrates than the Pliocene.