The Cambrian period, often celebrated for the “Cambrian explosion”, marked a pivotal phase in the history of life when early arthropods emerged and rapidly diversified. These organisms not only ...

New research provides the clearest evidence yet that the Cambrian explosion—a rapid burst of evolution 540 million years ago, could have been triggered by only a small increase in oxygen levels in ...

Palaeontologists are helping resolve the evolution and ecology of Odaraia, a taco-shaped marine animal that lived during the Cambrian period. Fossils reveal Odaraia had mandibles. Palaeontologists are ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Over 500 million years ago, a taco-shaped marine organism named ...

An illustration of the taco-shaped Odaraia, which researchers say likely swam upside-down and trapped prey in its spine-covered legs. Danielle Dufault, Royal Ontario Museum Around 540 million years ...

A new study, led by palaeontologists at the Royal Ontario Museum (ROM) is helping resolve the evolution and ecology of Odaraia, a taco-shaped marine animal that lived during the Cambrian period.

The Cambrian Explosion is a landmark moment in the history of life on Earth when many of the major groups of animals first appear in the fossil record. New research, however, suggests that many of ...

Fig.1: Tempo and mode in the body size evolution of Cambrian-Ordovician trilobites. Changes in maximum size (red) and mean size (blue) for each time slice, with lines and shading representing the mean ...