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Topic: Triassic

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Triassic Period

Extinction event

Jurassic

Permian

Mesozoic

Cretaceous

Dinosaur

Impact event

Fossils and the geological timescale

Ordovician Period

Plesiosaur

Gondwanan

Paleocene

Silurian

Cambrian

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	Triassic Dinosaurs - ZoomDinosaurs.com
		During the early Triassic, corals appeared and ammonites recovered from the Permian extinction.
		Leptocycas was a cycad, a primitive seed plant from the late Triassic period.
		at the beginning of the Triassic, 220 million years ago, decreased the amount of shoreline, formed mountains, and gave the interior of the supercontinent a dry, desert-like terrain.
	www.enchantedlearning.com /subjects/dinosaurs/mesozoic/Triassic.html (686 words)

	Triassic - Wikipedia, the free encyclopedia
		The extinction event that closed the Triassic period has recently been more accurately dated, but as with most older geologic periods, the rock beds that define the start and end are well identified, but the exact dates of the start and end of the period are uncertain by a few million years.
		The Triassic was named in 1834 by Friedrich Von Alberti from the three distinct layers (Latin trias meaning triad) —red beds, capped by chalk, followed by fl shales— that are found throughout Germany and Northwest Europe, called the 'Trias'.
		The Triassic period ended with a mass extinction, which was particularly severe in the oceans; the conodonts disappeared, and all the marine reptiles except ichthyosaurs and plesiosaurs.
	en.wikipedia.org /wiki/Triassic (1707 words)

	ninemsn Encarta - Triassic Period
		The Triassic Period is preceded by the Permian, which ended with a mass extinction, and succeeded by the Jurassic, marked by a major marine transgression (a rise in sea level, drowning low-lying coastal areas).
		During the Triassic, tectonic activity increased markedly and this large land mass started to be torn apart into the continental blocks that we have today.
		On land the Triassic flora remained broadly similar to that of the preceding Permian Period and was dominated by gymnosperms.
	au.encarta.msn.com /encyclopedia_761574375/Triassic_Period.html (636 words)

	TRIASSIC SYSTEM - LoveToKnow Article on TRIASSIC SYSTEM (Site not responding. Last check: 2007-11-07)
		The well-known white marble of Carrara in the Apuan Mountains is a metamorphosed Triassic limestone.
		Flowering plants are, unknown in the Triassic deposits and the dominant forms are all gymnosperms, the prevailing types being ferns and fern-like plants.
		The reptiles of the Triassic deposits, unlike the amphibians, which are Permian in character, show a closer relationship with Jurassic forms; one of the most interesting facts in the life-history of the grotip is the development during this period of sea-going forms such as at a later geological period played so prominent a part.
	81.1911encyclopedia.org /T/TR/TRIASSIC_SYSTEM.htm (4099 words)

	Triassic period on Encyclopedia.com (Site not responding. Last check: 2007-11-07)
		Throughout the Triassic, E North America, as a result of the mountain-building episode that formed the Appalachians in the late Paleozoic era, was elevated above sea level.
		The end of the Triassic in North America was marked by extensive faulting and tilting of the Newark series, called the Palisade disturbance, and by the emergence of W North America.
		The dominant animals of the Triassic were the reptiles; although the Triassic reptiles were less specialized than those of the Jurassic, there were already a number of types of dinosaurs, pterosaurs, and marine reptiles.
	www.encyclopedia.com /html/T/Triassic.asp (838 words)

	Triassic period. The Columbia Encyclopedia, Sixth Edition. 2001-05
		Throughout the Triassic, E North America, as a result of the mountain-building episode that formed the Appalachians in the late Paleozoic era, was elevated above sea level.
		The end of the Triassic in North America was marked by extensive faulting and tilting of the Newark series, called the Palisade disturbance, and by the emergence of W North America.
		The dominant animals of the Triassic were the reptiles; although the Triassic reptiles were less specialized than those of the Jurassic, there were already a number of types of dinosaurs, pterosaurs, and marine reptiles.
	www.bartleby.com /65/tr/Triassic.html (556 words)

	The Triassic Period -- (Site not responding. Last check: 2007-11-07)
		The Triassic Period was born 250 million years ago (mya) from the violent close of the Permian Period.
		The Triassic Period came to its own violent end about 200 mya as great convective forces deep within the earth split apart the northwestern region of Pangea, and set North America adrift from what would become the African continent.
		With the death of Pangea and the Triassic, the Jurassic was born.
	www.triassiclegacy.org /The_Triassic.html (315 words)

	Late Triassic Period @ Planet Dinosaur
		The Triassic Period (about 248 - 208 million years ago) was the first phase of the Mesozoic era (Age of the Middle Life), often called the Age of Dinosaurs.
		In the Late Triassic, many of the older reptiles were wiped out, but new kinds took their place.
		Later in the Triassic Period ferns were replaced by cycadeoids and conifers.
	planetdinosaur.com /dinosaur_worlds/late_triassic.htm (588 words)

	Triassic (Site not responding. Last check: 2007-11-07)
		The Triassic was named in 1834 by Freidrich Von Alberti[?] for the three distinct layers of redbeds, capped by chalk, followed by fl shales that are found throughout Germany and Northwest Europe.
		The Triassic is the first Era of the Mesozoic Era -- the Age of Dinosaurs.
		The first Angiosperms (flowering plants) may have evolved during the Triassic as did the first flying vertebrates although the latter appear to be flying reptiles, not ancestors of birds.
	www.termsdefined.net /tr/triassic.html (570 words)

	Triassic Summary
		The Triassic period is the first of the three divisions of the Mesozoic era, which is known as "The Age of Reptiles." The period lasted for 37 million years, from 245 to 208 million years ago.
		The supercontinent Pangaea was rifting during the Triassic, especially late in the period, but had not yet separated; the first marine sediments in the earliest rift, which separated New Jersey from Morocco, are Late Triassic in origin.
		The Triassic period ended with a mass extinction, which was particularly severe in the oceans; the conodonts disappeared, and all the marine reptiles except ichthyosaurs and plesiosaurs.
	www.bookrags.com /Triassic (3035 words)

	Triassic bibliography
		Brinkman, D., and Sues, H.-D., 1987, A staurikosaurid dinosaur from the Ischigualasto Formation (Upper Triassic) of Argentina and the relationships of the Staurikosauridae: Palaeontology, v.
		Dazakov, A. M., Dagis, A., and Kurushin, N. I., 1982, Paleogeography of the Triassic of the north of middle Siberia: Trudy Institute Geologii i Geofiziki, v.
		Raath, M. A., 1977, The anatomy of the Triassic theropod Syntarsus rhodesiensis (Saurischia: Podokesauridae) and a consideration of its biology [PhD dissert.]: Rhodes University, Salisbury.
	www.talkorigins.org /origins/biblio/triassic.html (688 words)

	The Triassic (Site not responding. Last check: 2007-11-07)
		Cimmeria and the Cathaysian terranes collided with Siberia in the Middle Triassic.
		By the latest Triassic, just as the formation of Pangea was complete, the supercontinent began to break up, and rifts developed between North America, Africa, and South America.
		The Triassic seas were home to other large reptiles, such as ichthyosaurs and plesiosaurs, as well as invertebrate survivors of the Permian extinction, such as a few ammonites, brachiopods, and molluscs.
	www.paleoportal.org /time_space/period.php?period_id=10 (1188 words)

	Triassic - Search Results - MSN Encarta
		Triassic Period, first of the three divisions of the Mesozoic Era of the geologic time scale (Geology), spanning an interval of 49 million years,...
		The Mesozoic Era is divided into three geological periods: the Triassic, which lasted from 248 million to 206 million years ago; the Jurassic, from...
		To the east of the New Jersey Highlands is the Northern Piedmont, also called the Piedmont Lowlands or Triassic Lowlands.
	encarta.msn.com /Triassic.html (127 words)

	Triassic Period
		The plant-eating dinosaurs, which appeared during the mid-to-late Triassic more than 200 million years ago, were the first Ornithischians, or bird-hipped dinosaurs, and were no bigger than turkeys.
		Grass never grew during the Triassic and the dinosaurs got bigger and bigger as a result of having little competition from any other forms of life on the land.
		One of the most significant developments to occur during the latter part of the Triassic was that some creatures took to the air.
	www.tooter4kids.com /DinosaurIndex/triassic_period.htm (400 words)

	SPACE.com -- Did Triassic Asteroid Impact Spare the Dinosaurs?
		A mounting stack of evidence suggests that asteroids and comets are the leading cause of terrestrial death, delivering immensely fatal blows every 100 million years or so that wipe the slate of life frighteningly close to clean in remarkably rapid fashion.
		Using old-fashioned sleuthing aided by modern techniques, scientists have found tantalizing evidence suggesting that the impact of an asteroid or comet was the cause of the calamity at the boundary between the Triassic and Jurassic periods during the Mesozoic era.
		Most of the dinosaurs roaming the Earth during the late Triassic were not the giants that emerged in the subsequent Jurassic and Cretaceous periods, with one exception.
	www.space.com /scienceastronomy/solarsystem/asteroid_triassic_wg_010813.html (1263 words)

	Evolution: Library: Permian-Triassic Extinction
		The Permian layers contain abundant animal fossils and fossilized traces of animals, while the Triassic layers are almost devoid of fossils, suggesting a mass extinction event occurred 250 million years ago, at the end of the Permian.
		One of the most dramatic and mysterious events in the history of life, the so-called "Great Dying" of animals and plants some 250 million years ago, continues to fascinate and baffle scientists.
		Of the five or so mass extinctions recorded in Earth's fossils, this one at the end of the Permian period and the start of the Triassic was the most catastrophic.
	www.pbs.org /wgbh/evolution/library/03/2/l_032_02.html (533 words)

	ASRG Research Achievements - Triassic Projects
		The Peace River Embayment during the Early Triassic was hot and arid, had dominant seasonal north-northeast trade winds, low rates of siliciclastic sedimentation, large aeolian input, low biotic diversity, and cold water upwelling.
		Modern depositional/environmental analogues to the Peace River Embayment of the Early Triassic include the: southwest coast of the United States, north- and southwest coasts of Africa, northwest coast of Australia, southeast coast of the United States, and the coast of Texas in the Gulf of Mexico.
		However none of these analogues are believed to be exact similar, since during the Early Triassic there was one large pole to pole landmass and ocean that may have influenced the climate differently compared to present day.
	www.geo.ucalgary.ca /asrg/Activities/Previous/Triassic/Robert/Triassic_Robert.htm (1233 words)

	The Permo-Triassic Extinction
		At the boundary between the Permian and Triassic systems, the diversity of life represented in the fossil record is reduced to a level not seen since the Cambrian.
		Life on the early Triassic earth was remarkably homogenous, as a handful of taxa which survived the extinction proliferated across the planet, for instance the brachiopod Lingula, the bivalves Claraia, Eomorphis, and Unionites, the weedy plant Isoetes, and the mammal-like reptile Lystrosaurus.
		Long-period Milankovitch cycles from the Late Triassic and Early Jurassic of eastern North America and their implications for the calibration of the early Mesozoic time scale and the long-term behavior of the planets.
	www.geocities.com /earthhistory/permo.htm (6257 words)

	Triassic Period (Site not responding. Last check: 2007-11-07)
		At the beginning of the Triassic period, Nova Scotia was located near the equator near the middle of a single supercontinent called Pangea, or "One Earth." Wedged between present-day Africa and North America, it was far from the moderating influence of the ocean.
		From the Permian Period to the middle of the Triassic Period, Nova Scotia was experiencing the erosional effects of a hot, arid climate.
		Early to Middle Triassic rocks are therefore absent from the province.
	museum.gov.ns.ca /fossils/geol/triassic.htm (399 words)

	Search Results for "Triassic"
		Triassic period, (trias´ik) (KEY), first period of the Mesozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table) from 205 to 250 million...
		...Any of various reptiles of the order Therapsida of the Permian and Triassic periods, many of which are considered to be direct ancestors of mammals.
		...Of, belonging to, or designating the era of geologic time that includes the Triassic, Jurassic, and Cretaceous periods and is characterized by the development of...
	www.bartleby.com /cgi-bin/texis/webinator/sitesearch?FILTER=&query=Triassic (318 words)

	Palaeos Mesozoic : Triassic : The Triassic Period
		The Triassic Period is the first geological period of the Mesozoic era or "Age of Reptiles".
		The Triassic saw the single vast supercontinent of Pangea straddling the equator.
		Bivalves, ammonoids and brachiopods all recovered from the Permian extinction to dominate the Triassic.
	www.palaeos.com /Mesozoic/Triassic/Triassic.htm (1167 words)

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