Ages: Further Divided

Last time, we were venturing through the eons, eras, and epochs. But today, we’ll be venturing into the zenith of geological times: ages.

If I mention the time of T. Rex in basic forms, I would be saying Late Cretaceous, Mesozoic Era in the Phanerozoic Eon. But here’s the catch. Saying just Late Cretaceous would mean that it lived alongside much older genera such as Spinosaurus aegypticus.

Here is where ages come into play. In total, there are 30 ages just in the Mesozoic. Here they are.

Early Triassic:
Induan
Olenkian

Middle Triassic:
Anisian
Ladinian

Late Triassic:
Carnian
Norian
Rhaetian

Early Jurassic:
Hettangian
Sinemurian
Pliensbachian
Toarcian

Middle Jurassic:
Aalenian
Bajocian
Bathonian
Callovian

Late Jurassic:
Oxfordian
Kimmeridgian
Tithonian

Early Cretaceous:
Berriasian
Valanginian
Hauterivian
Barremian
Aptian
Albian

Late Cretaceous:
Cenomanian
Turonian
Coniacian
Santonian
Campanian
Maastrichtian

The Age of The Earth

The age of the Earth is divided into 1 eon or 4 eras. These 4 eras housed creatures so bizarre, they looked like they could be the main characters in a 21st century sci-fi movie. Would you believe that it all started from 1, single, cell, which started to make oxygen while some other stray cells used that oxygen? Eventually, they formed colonies, and grew bigger and bigger...

The names of these unique, magnificent eras were the Pre-Cambrian (4.6 Ga (billion years ago), Paleozoic (544 million years ago), Mesozoic (250 mya), and finally, the one that houses us, the Cenzoic (65.5 mya to present). When we’re studying dinosaurs, we’ll be looking at the famed Mesozoic Era.

Now, we are going to venture into geological measurements and notations. The Mesozoic houses the Triassic, the Jurassic and the Cretaceous. These are again divided into epochs; Early, Middle and Late ( in the case of the Cretaceous; Early and Late).