Crossword clues for cambrian
The Collaborative International Dictionary
Primordial \Pri*mor"di*al\, a. [L. primordialis, from primordium the first beginning; primus first + ordiri to begin a web, to begin: cf. F. primordial.]
First in order; primary; original; of earliest origin; as, primordial condition. ``The primordial facts of our intelligent nature.''
--Sir W. Hamilton.(Geol.) Of or pertaining to the lowest beds of the Silurian age, corresponding to the Acadian and Potsdam periods in American geology. It is called also Cambrian, and by many geologists is separated from the Silurian.
-
(Biol.) Originally or earliest formed in the growth of an individual or organ; as, a primordial leaf; a primordial cell.
Primordial utricle (Bot.), the interior lining of a young vegetable cell.
Cambrian \Cam"bri*an\, n.
A native of Cambria or Wales.
(Geol.) The Cambrian formation.
Cambrian \Cam"bri*an\, a.
(Geog.) Of or pertaining to Cambria or Wales.
(Geol.) Of or pertaining to the lowest subdivision of the rocks of the Silurian or Molluscan age; -- sometimes described as inferior to the Silurian. It is named from its development in Cambria or Wales. See the Diagram under Geology.
Douglas Harper's Etymology Dictionary
1650s, "from or of Wales or the Welsh," from Cambria, variant of Cumbria, Latinized derivation of Cymry, the name of the Welsh for themselves, from Old Celtic Combroges "compatriots." Geological sense (of rocks first studied in Wales and Cumberland) is from 1836.
Gazetteer
Wikipedia
The Cambrian ( or ) was the first geological period of the Paleozoic Era, lasting from to million years ago (mya) and was succeeded by the Ordovician. Its subdivisions, and indeed its base, are somewhat in flux. The period was established (as “Cambrian series”) by Adam Sedgwick, who named it after Cambria, the Latinised form of Cymru, the Welsh name for Wales, where Britain's Cambrian rocks are best exposed. The Cambrian is unique in its unusually high proportion of lagerstätte sedimentary deposits. These are sites of exceptional preservation, where "soft" parts of organisms are preserved as well as their more resistant shells. This means that our understanding of the Cambrian biology surpasses that of some later periods.
The Cambrian marked a profound change in life on Earth; prior to the Cambrian, the majority of living organisms on the whole were small, unicellular and simple; the Precambrian Charnia being exceptional. Complex, multicellular organisms gradually became more common in the millions of years immediately preceding the Cambrian, but it was not until this period that mineralized—hence readily fossilized—organisms became common. The rapid diversification of lifeforms in the Cambrian, known as the Cambrian explosion, produced the first representatives of all modern animal phyla. Phylogenetic analysis has supported the view that during the Cambrian radiation, metazoa ( animals) evolved monophyletically from a single common ancestor: flagellated colonial protists similar to modern choanoflagellates.
Although diverse life forms prospered in the oceans, the land was comparatively barren—with nothing more complex than a microbial soil crust and a few molluscs that emerged to browse on the microbial biofilm. Most of the continents were probably dry and rocky due to a lack of vegetation. Shallow seas flanked the margins of several continents created during the breakup of the supercontinent Pannotia. The seas were relatively warm, and polar ice was absent for much of the period.
The United States Federal Geographic Data Committee uses a "barred capital C" character similar to the capital letter Ukrainian Ye to represent the Cambrian Period. The proper Unicode character is .
Cambrian is a division of the geologic timescale at the end of the Proterozoic, named after Cambria, the Latinised form of Cymru, which is the Welsh name for Wales. The Cambrian period, during which the Cambrian explosion took place, is composed of the Early Cambrian, Middle Cambrian and Late Cambrian.
Cambrian may also refer to the following:
Usage examples of "cambrian".
Ediacaran organisms were devoured or outcompeted by the lither and more sophisticated animals of the Cambrian period.
He was strangely convinced that the marking was the print of some bulky, unknown, and radically unclassifiable organism of considerably advanced evolution, notwithstanding that the rock which bore it was of so vastly ancient a date - Cambrian if not actually pre-Cambrian - as to preclude the probable existence not only of all highly evolved life, but of any life at all above the unicellular or at most the trilobite stage.
Besides his connection with the Cambrian, it gives details of his many other activities, including his representation of Cardigan Boroughs in the House of Commons from 1874 to 1885, and on the merging of the boroughs into the county, at that date, for Cardiganshire till 1886, when he was defeated on becoming an opponent of Mr.
He was born at Duffryn, Aberdare, Glamorganshire, and is both by birth and training a thorough Cambrian.
In this reckoning it should be noted that no account is taken of those great intervals of unrecorded time, such as elapsed between the close of the Laurentian and the beginning of the Cambrian periods.
Empty platforms rushed past, their names in title: Cambrian, Ordovician, Silurian, Devonian, Permian, Triassic, Jurassic.
They were made from originals in the Hebrew, Arabic, Persian, Turkish, Tartar, Tibetian, Chinese, Mandchou, Russian, Malo-Russian, Polish, Finnish, Anglo-Saxon, Ancient Norse, Suabian, German, Dutch, Danish, Ancient Danish, Swedish, Ancient Irish, Irish, Gaelic, Ancient British, Cambrian British, Greek, Modern Greek, Latin, Provencal, Italian, Spanish, Portuguese, French, Rommany.
Name a creature, from a nematode worm to Cameron Diaz, and they all use architecture first created in the Cambrian party.
Also instrumental in helping revisions were the discoveries of two further early Cambrian sites, one in Greenland and one in China, plus more scattered finds, which between them yielded many additional and often better specimens.
She had seen it in the plodding but graceful tread of the dinosaurs, in the skittering of trilobites in the warm shallows of Cambrian seas, in the flutter of ancient birds too new to their wings to even dream of flight.
The day the Snark sailed into Suva, in the Fijis, we made out the Cambrian going out.
And the day the Cambrian arrived at Tulagi, we sailed from Penduffryn, a dozen miles away.
Into his hand he put fourteen sovereigns and requested him to go on board the Cambrian and buy Captain Lewes off.
Had he, or any of his men, guided the marines, he could have looked for bloody reprisals as soon as the Cambrian weighed anchor.
The issue arose when the Reverend Adam Sedgwick of Cambridge claimed for the Cambrian period a layer of rock that Roderick Murchison believed belonged rightly to the Silurian.