marine habitats ideal for spawning new life-forms. Nevertheless, the scale of the Cambrian Explosion is likely exaggerated due to the proliferation of hard-bodied animals that fossilized much more ...

Scientists are suggesting there may be a brand new type of life — or, at least, that one existed back in the day. In a new, yet-to-be-peer-reviewed paper, scientists from the University of ...

A major fossil site bearing witness to the Cambrian explosion and providing evolutionary evidence for early life-forms, it was deemed one of the most surprising scientific discoveries of the 20th ...

Others propose that an extinction of life just before the Cambrian opened up ecological roles, or "adaptive space," that the new forms exploited. External, ecological factors like these were ...

Environmental stress in evolution can be reframed as a powerful engine of innovation, not simply a barrier to survival.

Although these new life-forms spread worldwide ... betta fish owes its body construction to early chordates in the Cambrian such as Pikaia gracilens (the fossil shown here).

The first large multicellular organisms were the Ediacarans, ocean-dwelling life forms which appeared about 700 million years ago and disappeared around the time of the so-called Cambrian ...

Something dramatic happened about 500 million years ago called the Cambrian "explosion," during which an incredible diversity ...

Its end caused an alteration of climate that made possible the proliferation of animal life in Cambrian times There is considerable geological evidence for an extensive glaciation some 600 million ...