Dinosaurs: Geological Periods and Eras, and their Nicknames Phanerzoic Cenozoic (65.5 mya present) Quaternary (2.588 mya to present) – (Years: 542 million years ago [mya] to Defining Nickname Sub-eras and Defining Nickname: present day) "The Age of Mammals and Dead Dinos" Holocene (11,700 years – present)—"The Age of Man" Defining Nickname: Pleistocene (2.588 mya – 11,700 "Not Many Mesozoic That years)—"The Ice Age" Million Years Ago" Paleozoic Precambrian (Years: Proterozoic 4600 to 542 mya) Archean Hadean
Dinosaurs: Geological Periods and Eras, and their Nicknames Phanerzoic (Years: 542 million years ago [mya] to present day) Defining Nickname: "Not That Many Million Years Ago" Cenozoic (65.5 mya – present) Defining Nickname "The Age of Mammals and Dead Dinos" Mesozoic Paleozoic Quaternary (2.588 mya to present) Sub-eras and Defining Nickname: Holocene (11,700 years – present)—"The Age of Man" Pleistocene (2.588 mya – 11,700 years)—"The Ice Age" Precambrian (Years: 4600 to 542 mya) Proterozoic Archean Hadean
GeologicalPeriodsWorksheet.docx