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Cambrian
The Cambrian is a major division of the geologic timescale that begins about 542 Ma (million years ago) at the end of the Proterozoic eon and ended about 488.3 Ma with the beginning of the Ordovician period (ICS, 2004).
Note: The above text is excerpted from the Wikipedia article "Cambrian", which has been released under the GNU Free Documentation License.
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Fossils & Ruins News
December 19, 2024
Dec. 18, 2024 — While volcanism caused a temporary cold period, the effects had already worn off thousands of years before the meteorite, the ultimate cause of the dinosaur extinction event, ...
Dec. 16, 2024 — Analysis of the remains of at least 37 individuals from Early Bronze Age England finds they were killed, butchered, and probably consumed before being thrown down a 15m-deep shaft. It is the largest-scale example of interpersonal violence from ...
Dec. 12, 2024 — Neanderthal genes make up 1-2% of the genomes of non-Africans. Scientists analyzed the lengths of regions of Neanderthal DNA in 58 ancient Eurasian genomes of early modern humans and determined that the introgressed genes result from interbreeding ...
Dec. 12, 2024 — Few genomes have been sequenced from early modern humans, who first arrived in Europe when the region was already inhabited by Neanderthals. An international team has now sequenced the oldest modern human genomes to date. The genomes were recovered ...
Latest Headlines
updated 12:56 pm ET
Dec. 19, 2024 — A new study finds nearly 50 hidden relatives of Pterodactylus, the first pterosaur. Joined by its newly discovered relatives, Pterodactylus's 'family' now encompasses tiny flaplings, a host of ...
Dec. 19, 2024 — Scientists have successfully identified a previously unknown species to Southern California from fossilized seeds, revealing a drought-fueled dance ...
Dec. 19, 2024 — Fossilized skeletons and shells clearly show how evolution and extinction unfolded over the past half a billion years, but a new analysis extends the chart of life to nearly 2 billion years ago. The ...
Dec. 18, 2024 — A fragment of 'lost' music found in the pages of Scotland's first full-length printed book is providing clues to what music sounded like five centuries ago. Scholars have been investigating the ...
Dec. 17, 2024 — Researchers analyzed radioisotopes in layers of fossilized volcanic ash. Decay of uranium to lead within tiny crystals enabled scientists to precisely pinpoint dates for certain events. They ...
Dec. 12, 2024 — Researchers have uncovered in anglerfish a specialized motor neuron population for the first dorsal fin used for 'fishing'. When the first dorsal fin ...
Dec. 13, 2024 — Glaciologists used sound waves to reveal Ice Age landforms buried beneath almost 1 km of mud in the North Sea. The results suggest that the landforms were produced about 1 million years ago, when an ...
Dec. 12, 2024 — Nearly all living organisms use the same genetic code, a complicated mechanism by which genetic information is translated into proteins, the building blocks of life. A new study suggests conventional ...
Dec. 12, 2024 — A new study has mapped 35 years of river changes on a global scale. The work has revealed significant effects on both downstream (44% decrease in ...
Dec. 11, 2024 — A new study sheds light on the lives of people who lived over 5,600 years ago near Kosenivka, Ukraine. Researchers present the first detailed ...