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Latest Proterozoic Stories

ediacaran life
2015-04-24 10:45:18

Long, long before the dinosaurs of the Jurassic Period, the Earth went through the Devonian and the Cambrian periods. And before those, the Ediacaran.

snowball-earth-670x440-150413
2015-04-15 10:28:23

Kind of like today with Frozen still taking over the universe, there was a time when everything was frozen, even places near the equator.

Cambrian Explosion
2014-11-05 05:31:58

In devising his theories about evolution, Darwin theorized that species evolved on Earth slowly over millions of years. However, the fossil record doesn’t agree with the slow-and-steady model as a massive explosion of species took place 530 million years ago during the Cambrian era.

multicellular organism
2014-09-26 07:55:55

For those involved in and interested in the history of life and its evolution - including the inception of multicellular eukaryotes (organism with cells) - Virginia Tech released some very exciting news recently.

paleosol in boulders
2014-09-08 07:08:52

Geologists from Trinity College Dublin have rewritten the evolutionary history books by finding that oxygen-producing life forms were present on Earth some 3 billion years ago – a full 60 million years earlier than previously thought.

Fossil of Haootia quadriformis
2014-08-28 03:00:26

An unusual new fossil discovery of one of the earliest animals on earth may also provide the oldest evidence of muscle tissue – the bundles of cells that make movement in animals possible.

paleontological reconstruction of rangeomorph fronds
2014-08-13 04:00:43

New three-dimensional reconstructions show how some of the earliest animals on Earth developed, and provide some answers as to why they went extinct.

Ups And Downs Of Early Atmospheric Oxygen
2014-02-20 10:41:29

UC Riverside research team challenges conventional view of a simple two-step rise in early oxygen on Earth; study suggests instead dynamic oxygen concentrations that rose and fell over billions of years


Latest Proterozoic Reference Libraries

Geologic Clock With Events And Periods
2012-11-18 19:10:56

The Neoproterozoic is the third of three subdivisions of the Proterozoic Eon (occurring from 1 billion years ago to 542 million years ago). This terminal era of the Proterozoic is itself divided into three sub-periods called the Tonian, Cryogenian, and Ediacaran Periods. The most severe glaciation known in the geologic record occurred during the Cryogenian Period, when ice sheets reached the equator and formed a possible “Snowball Earth.” And the earliest fossils of multi-cellular life...

Geologic Clock With Events And Periods
2012-11-18 19:08:04

The Paleoproterozoic is the first of three subdivisions of the Proterozoic Eon (occurring from 2.5 billion to 1.6 billion years ago (Ga). This period is marked by the first stabilization of the continents, and also when cyanobacteria--a type of bacteria that uses biochemical processes of photosynthesis to produce oxygen--evolved. Experts have found paleontological evidence that during at least part of the Paleoproterozoic era, about 1.8 Ga, the earth year was about 450 days long, with days...

Geologic Clock With Events And Periods
2012-10-22 14:17:38

The Archean (formerly Archaeozoic) is a geologic eon between the Hadean and Proterozoic eons. The Archean Eon begins at roughly 3.8 billion years ago (Ga) and ends at about 2.5 Ga. But unlike all other geological ages, which are based on stratigraphy, The Archean eon is defined chronometrically. The lower boundary of 3.8 Ga has also not been officially recognized by the International Commission on Stratigraphy. The name Archean is derived from the ancient Greek (Arkhe), meaning...

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Word of the Day
chickabiddy
  • A young chicken: also used as a pet name for children.
The word 'chickabiddy' may come from 'chick' plus 'biddy', a name used in calling a hen or chicken.
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