First animals developed complex ecosystems before the Cambrian explosion Metacommunity analysis suggests succession, not mass extinction, explains Ediacaran diversity drop Date: May 17, 2022 ...

Erik Sperling, a palaeontologist at Stanford University in California, compiled a database of 4,700 iron measurements taken from rocks around the world, spanning the Ediacaran and Cambrian periods.

Laser-scanning the "E" surface at Mistaken Point in Newfoundland. In the foreground Ediacaran organisms such as Fractofusus are visible. Due to the subtle features of the fossils, they are only ...

Early animals formed complex ecological communities more than 550 million years ago, setting the evolutionary stage for the Cambrian explosion, according to a study by Rebecca Eden, Emily Mitchell ...

They also analyzed fossil finds from both the Ediacaran and the Cambrian, creating the first integrated picture of what happened before, during and after the Cambrian explosion.

The Cambrian explosion was an extraordinary phenomenon in the evolution of life on the planet that led to the emergence of many animal phyla and the diversification of species. During this period ...

Evolution of Hox genesThe advent of the developmental mechanisms of control; References; 3 -- Epigenetic requisites of the Cambrian explosion; Gene recruitment; Evolution of lens crystallin genes; ...

The Cambrian Explosion was unique, Marshall said, because, though there have been mass extinctions — such as that of the dinosaurs — and recoveries since, there has never been another event as ...

The Cambrian Explosion occurred around the early Cambrian period, approximately 541 million years ago. This period witnessed a rapid increase in the taxonomic diversity, morphological disparity ...

Much of the supposed uniqueness of the Cambrian explosion is a hangover from the 19th-century belief that there were no Precambrian animals. But, as the Ediacaran fauna shows, that is not true.

More information: Guang-Yi Wei et al. Marine redox fluctuation as a potential trigger for the Cambrian explosion, Geology (2018). DOI: 10.1130/G40150.1 Journal information: Geology ...