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Palaeozoic

Palaeozoic(Paleozoic) The first of the three eras of the Phanerozoic, about 570–248 Ma ago. The Cambrian, Ordovician, and Silurian Periods together form the Lower Palaeozoic Sub-Era; the Devonian, Carboniferous, and Permian the Upper Palaeozoic Sub-Era. It was an era of great evolutionary change among plants, which began to invade the land at its beginning. By the end of the era, amphibians and reptiles were major components of various communities and giant tree-ferns, horsetails (Calamitaceae), and cycads gave rise to extensive forests. The faunas of the Palaeozoic are noted for the presence of many invertebrate organisms including trilobites, graptolites, brachiopods, cephalopods, and corals. The name is derived from palaeo- and the Greek zoe, meaning ‘life’.

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"Palaeozoic." A Dictionary of Ecology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"Palaeozoic." A Dictionary of Ecology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic-0

"Palaeozoic." A Dictionary of Ecology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic-0

Palaeozoic

Palaeozoic The first (570–248 Ma) of the three eras of the Phanerozoic. The Cambrian, Ordovician, and Silurian Periods together form the Lower Palaeozoic sub-era; the Devonian, Carboniferous, and Permian the Upper Palaeozoic sub-era. During the Palaeozoic, two major orogenies occurred: the Caledonian during the Lower Palaeozoic, and the Variscan in late Palaeozoic times. The faunas of the Palaeozoic are noted for the presence of many invertebrate organisms, including trilobites (Trilobita), graptolites (Graptolithina), brachiopods (Brachiopoda), cephalopods (Cephalopoda), and corals. By the end of the era, amphibians and reptiles were major components of various communities and giant tree-ferns, horsetails, and cycads gave rise to extensive forests.

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"Palaeozoic." A Dictionary of Earth Sciences. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"Palaeozoic." A Dictionary of Earth Sciences. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic

"Palaeozoic." A Dictionary of Earth Sciences. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic

Palaeozoic

Palaeozoic (Paleozoic) The first of the 3 eras of the Phanerozoic, about 590–248 Ma ago. The Cambrian, Ordovician, and Silurian Periods together form the Lower Palaeozoic Sub-Era; the Devonian, Carboniferous, and Permian the Upper Palaeozoic Sub-Era. It was an era of great evolutionary change among plants, which began to invade the land at its beginning. By the end of the era, amphibians and reptiles were major components of various communities and giant treeferns, horsetails (Calamitaceae), and cycads (Cycadaceae) gave rise to extensive forests. The name is derived from palaeo- and the Greek zoe, meaning ‘life’.

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"Palaeozoic." A Dictionary of Plant Sciences. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"Palaeozoic." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic-1

"Palaeozoic." A Dictionary of Plant Sciences. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic-1

Palaeozoic

Palaeozoic (Paleozoic) The first of the three eras of the Phanerozoic, about 542–251 Ma ago. The Cambrian, Ordovician, and Silurian Periods together form the Lower Palaeozoic Sub-Era; the Devonian, Carboniferous, and Permian the Upper Palaeozoic Sub-Era. The faunas of the Palaeozoic are noted for the presence of many invertebrate organisms including Trilobitomorpha, Graptolithina, Brachiopoda, Cephalopoda, and corals. By the end of the era, amphibians and reptiles were major components of various communities and giant tree-ferns, horsetails, and cycads gave rise to extensive forests.

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"Palaeozoic." A Dictionary of Zoology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"Palaeozoic." A Dictionary of Zoology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic-2

"Palaeozoic." A Dictionary of Zoology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic-2

Palaeozoic

Palaeozoic Second era of geological time, after the Precambrian era, lasting from 590 million to 248 million years ago. It is sub-divided into six periods: Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian. Invertebrate animals evolved hard skeletons capable of being preserved as fossils in the Cambrian; fish-like vertebrates appeared in the Ordovician; amphibians emerged in the Devonian; and reptiles in the Carboniferous.

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"Palaeozoic." World Encyclopedia. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"Palaeozoic." World Encyclopedia. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/palaeozoic

"Palaeozoic." World Encyclopedia. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/palaeozoic

Palaeozoic

Palaeozoic The first era of Phanerozoic time. It follows the Precambrian and is subdivided into the Lower Palaeozoic, comprising the Cambrian, Ordovician, and Silurian periods, and the Upper Palaeozoic, comprising the Devonian, Carboniferous, and Permian periods, It extended from about 590 million years ago to about 248 million years ago, when it was succeeded by the Mesozoic era.

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"Palaeozoic." A Dictionary of Biology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"Palaeozoic." A Dictionary of Biology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic-3

"Palaeozoic." A Dictionary of Biology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic-3

Palaeozoic

Palaeozoicartic, brick, chick, click, crick, dick, flick, hand-pick, hic, hick, kick, lick, mick, miskick, nick, pic, pick, prick, quick, rick, shtick, sic, sick, slick, snick, spic, stick, thick, tic, tick, trick, Vic, wick •alcaic, algebraic, Aramaic, archaic, choleraic, Cyrenaic, deltaic, formulaic, Hebraic, Judaic, Mishnaic, Mithraic, mosaic, Pharisaic, prosaic, Ptolemaic, Romaic, spondaic, stanzaic, trochaic •logorrhoeic (US logorrheic), mythopoeic, onomatopoeic •echoic, heroic, Mesozoic, Palaeozoic (US Paleozoic), Stoic •Bewick •disyllabic, monosyllabic, polysyllabic, syllabic •choriambic, dithyrambic, iambic •alembic •amoebic (US amebic) •aerobic, agoraphobic, claustrophobic, homophobic, hydrophobic, phobic, technophobic, xenophobic •cherubic, cubic, pubic •Arabic, Mozarabic •acerbic • apparatchik • dabchick •peachick

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"Palaeozoic." Oxford Dictionary of Rhymes. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"Palaeozoic." Oxford Dictionary of Rhymes. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic

"Palaeozoic." Oxford Dictionary of Rhymes. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/palaeozoic