Sentence examples for Cambrian from inspiring English sources

Why not fossil mammal fandom or a craze for critters from the Cambrian period?

The geological record speaks of four others since animal life became complex at the beginning of the Cambrian period 541m years ago.What neither these clever schoolchildren nor anyone else knows, however, is whether these extinctions had similar causes.

Though the fossiliferous explosion known as the Cambrian period is often thought of as the beginning of animal life, animals actually appeared for the first time during a geological twilight called the Ediacaran, 635m-542m years ago, between the end of a great ice age and the arrival of all those well-preserved Cambrian fossils.

The immense diversity of human artefacts, their rate of evolution, and the vast acceleration in that rate during the past 60 or so years is without precedent in the Earth's geological record—"It's the trace-fossil equivalent of the Cambrian explosion," says Dr Zalasiewicz.

But that no longer appears to be the case.The Burgess Shale came soon after a period of time known as the Cambrian explosion, when most major groups of complex animals arose over a surprisingly short period.

It is called Metaspriggina walcotti and dates from 505m years ago, the middle of the Cambrian period.

The latest explanation of the Cambrian explosion, the moment 540m years ago when animal life suddenly got much bigger, more abundant and more diverse, has returned to the idea that the crucial change was the evolution of hard bits.

WHAT came before the joyous explosion of animal life which ushered in the Cambrian period is, to quote Churchill, a riddle wrapped in a mystery inside an enigma.

Last November it announced a small profit for the first nine months of 2005.In this section Oil that glisters Making sense of Bernanke Sergei pulls it off In search of cheap money A calculation of conflict On the runway Welcome to the wild frontier The Cambrian age of economics ReprintsDZ Bank, the biggest holder of silent participations, has played a game of brinkmanship with Lone Star.

At any rate, the global startup movement is unlikely to run out of steam soon: as digital technology permeates more and more of the world, opportunities for startups will only grow.Dig deeper: A Cambrian Moment: a special report on tech startups (Jan 2014) Technoglobe: A map of the world startup ecosystems (Jan 2014) Founders' roundup: A collection of our coverage of startups.

Examples include the Cambrian Chilhowee Group and Silurian Tuscarora Sandstone and Clinch Sandstone formations in the Appalachian Mountains of eastern North America and the Flathead Sandstone and Tapeats Sandstone of the Rocky Mountains in the western part of the continent.