Million years ago, abbreviated as Mya, Myr (megayear) or Ma (megaannum), is a unit of time equal to 1,000,000 years (i.e. 1×106 years), or approximately...

"Million Years Ago" is a song recorded by English singer-songwriter Adele for her third studio album, 25 (2015). The song was written by Adele and Greg...

epoch of the Neogene Period and extends from about 23.03 to 5.333 million years ago (Ma). The Miocene was named by Scottish geologist Charles Lyell; the...

epoch in the geologic time scale that extends from 5.333 million to 2.58 million years ago. It is the second and most recent epoch of the Neogene Period...

Priabonian Rupelian Chattian Aquitanian         Subdivision of the Paleogene according to the ICS, as of 2021. Vertical axis scale: millions of years ago...

Quaternary period, from 2.5 million years ago to the present. Radiometric dating has yielded ages of up to 300,000 years for its rocks, and it reached...

subject of hominization.) Primates diverged from other mammals about 85 million years ago (mya), in the Late Cretaceous period, with their earliest fossils...

convention among geoscientists to use "a" specifically for "years ago" (e.g. 1 Ma for 1 million years ago), and "y" or "yr" for a one-year time period. However...

dinosaurs became extinct 66 million years ago, and modern humans (Homo sapiens) did not exist until about 300,000 years B.C. Ray Harryhausen, who animated...

from the late Miocene epoch (from around 6.2 million years ago) into the Holocene about 4,000 years ago, and various species existed in Africa, Europe...

during the Devonian period (400 million years ago). Another peak occurred in the Triassic period (220–200 million years ago). Since the start of the Industrial...

90 million years ago, rediscovered in 1994. Coelacanth (Latimeria), a member of a subclass (Actinistia) thought to have gone extinct 66 million years ago;...

3,000 million years ago, possibly as far as 3,800 million years ago. The oldest clear evidence of life on Earth dates to 3,000 million years ago, although...

long scale to the short scale. Related units are mya ("million years ago"), and byr ("billion years"). These are traditionally written in lowercase. Ga or...

to have diverged around 5.7-11 million years ago during the Late Miocene. Homo erectus appeared about 2 million years ago and spread throughout Africa (where...

have been found from as early as the Cambrian explosion over 539 million years ago. Of the more than 81,000 living species of chordates, about half are...

Homo floresiensis is thought to have arrived on Flores around 1.27-1 million years ago. There is debate as to whether H. floresiensis represents a descendant...

in Oceania that subsided after breaking away from Gondwana 83–79 million years ago. It has been described variously as a submerged continent, continental...

and 445 million years ago, the Acadian orogeny, from 410 to 380 million years ago, and the Alleghanian orogeny from 325 to 220 million years ago pushed...

site was dated to c. 1.4 million years ago, but further research has fixed its chronological context to 1.5–1.2 million years ago. The site yielded stone...

around 3.5 million years ago, and Megantereon about 3 million years ago. Smilodon lived in North and South America from about 2.5 million years ago. This subfamily...

3 million years ago (which created the Henry's Fork Caldera and the Mesa Falls Tuff), and the Lava Creek eruption approximately 640,000 years ago (which...

three-quarters of the plant and animal species on Earth approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs. Most...

the Earth, and mankind in one table. Each row is defined in years ago, that is, years before the present date, with the earliest times at the top of...

billion years ago to 539 million years ago) basement rocks, with the oldest zircon dated 4.1 billion years ago and the oldest rock dated 3.8 billion years ago...

8 ± 3.6 million years ago in the Early Miocene and genetically diverged into two main genetic lineages between 19.1 and 18.5 ± 3.5 million years ago. The...

the belt (2.5 billion years to 800 million years ago) Evolution of plates and associated ocean basin (800 to 250 million years ago) Major belt formation...

diverged some 70 million years ago. New World monkeys and catarrhine monkeys emerged within the simians roughly 35 million years ago. Old World monkeys...

during the Carboniferous approximately 335 million years ago, and began to break apart about 200 million years ago, at the end of the Triassic and beginning...

Earth's geologic time scale, covering the time period from 538.8 million years ago to the present. It is the eon during which abundant animal and plant...