How To Use Triassic In A Sentence
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There is a gap of several tens of millions of years between the Middle Permian when the last Metoptomatids lived, and the Middle Triassic when the true limpets appear.
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Towards the end of the Triassic, several new and more advanced archosaur groups evolved from the thecodonts.
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More specifically, there are Triassic, Jurassic, Cretaceous, Eocene, and Miocene marine and Oligocene and Plio-Pleistocene nonmarine sedimentary rocks.
Santa Monica Mountains (Bailey)
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It is now widely recognized that the events at the Permian-Triassic boundary gave rise to major terrestrial ecosystem collapse.
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In eastern Mongolia late Permian marine sediments with brachiopods, crinoids and Bryozoa and Triassic marine sediments with ammonites occur in the suture zone, indicating that marine conditions existed during these times.
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Well-preserved fossils occur in the zeolite facies Triassic rocks of Southland, New Zealand, where Coombs first described the phenomenon in the 1950s.
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These are sauropterygians, marine reptiles related to plesiosaurs, from the middle Triassic.
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A hypothetical supercontinent that included all the landmasses of the earth before the Triassic Period. When continental drift began, Pangaea broke up into Laurasia and Gondwanaland.
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Permian and Triassic plutonic complexes comprise monzonite, granite, granodiorite or tonalite with minor gabbro and diorite.
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I also read more of the December issue of the Journal of Vertebrate Paleontology — "Comparison and biomechanical interpretations of the vertebrae and osteoderms of Cacops aspidephorus and Dissorophus multicinctus (Temnospondyli; Dissorophoridae)," and "A possible new ctenosauriscid archosaur from the Middle Triassic Manda Beds of Tanzania.
What I Did During My Plague Vacation ( by Me)
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In New Jersey, Triassic brownish red, shale, sandstone, and argillite are extensive; these sedimentary rocks are much less resistant to erosion than the metamorphic crystalline rocks that form the core of the adjacent Northeastern Highlands (58).
Ecoregions of New Jersey (EPA)
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We describe the oldest chiton, which is the oldest animal fossil, the oldest evidence for the trilobite ancestor; we believe we've solved the Shonisaur murder mystery; and now we're announcing the identity of this serial killer, the Triassic kraken.
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The shallow polyhalite potash deposit in Sichuan are distributed in the north plunge top of Huayingshan anticline where is anhydrock of earlier Mesozoic Triassic period.
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In most cases the basanites intrude Triassic cherts and carbonates.
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The rocks are formed of versicoloured Triassic sandstone and conglomerates.
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The mine's three adits lie in the Shinarump conglomerate member of the Triassic Chinle Formation.
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Surrounding this lowlying area are ‘horsts’ of Palaeozoic rocks, and outcrops of Triassic conglomerates that drain into the basins of the Trent, Warwickshire Avon and the Severn.
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The idea of Boreal origins for both Gryphaea and Liostrea has to some extent been buttressed by discrediting or ignoring reports of occurrences of the genus in the Tethyan region in the Late Triassic.
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The Triassic limestones are stacked along monoclines of c.1 km thickness gently dipping toward the north.
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By Early Triassic times, cynodonts had diverged into large predaceous carnivores such as Cynognathus and moderate large omnivorous and herbivorous types such as Trirachodon and Diademodon.
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Early relatives of the sauropods, the Late Triassic plateosaurs or prosauropods, may have occasionally stood on their hind legs.
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This subsection contains mainly Mesozoic granitic and mafic plutonic rocks, Jura-Triassic volcanic rocks, Pre-Cretaceous metamorphic rocks, and Eocene and Oligocene marine and nonmarine and Miocene marine sedimentary rocks.
Coastal Hills (Bailey)
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The upper and the lower jaws were certainly covered with horny beaks in life, like the beak in turtles and, it can be assumed, in the Triassic rhynchosaurs.
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Even the youngest Triassic rocks are strongly folded, in places by isoclinal, recumbent folds.
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A feature of especial interest is that, while the youngest Triassic ammonites are quite rare, the oldest Jurassic ammonites are extremely abundant, entering the succession in a veritable flood.
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I geographically triassic what all the steinman is compulsorily on the bulge dissent norepinephrine so that i can canonization the shrubbery and tirolean. has to spear at its specifically fizzing, appropriately prophylactic haplotype, and stambul apogamy they jejunostomy to coot faker in mollification to do it.
Rational Review
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On its eastern margin in Mount Cook National Park, the schist gradually changes back into Permian-Triassic greywacke of a separate terrain.
Te Wahipounamu (South-West New Zealand World Heritage Area), New Zealand
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The Triassic thecodonts had given rise to the dinosaurs and pterosaurs in the late Triassic, and these now gave rise to an extraordinary range of adaptations to new habitats.
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The dominant features are the limestone formations of the middle and upper Triassic, the upper Jurassic and the upper Cretaceous, especially the so-called Durmitorean flysch.
Durmitor National Park, Montenegro
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The Triassic rocks are mainly red sandstones, -- often feldspathic, or arkose, with some conglomerates and shales.
The Elements of Geology
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As envisaged by Robertson et al. continental fragments rifted from Gondwana in Triassic time.
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The palaeogeographical evolution sensitively responds to the tectonism in the whole Triassic.
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Evidence for therapsid fur centers on the presence of infraorbital pits and ridges in some lower Triassic cynodonts.
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In contrast, dinosaur fossils have been traced in Triassic, Jurassic and Cretaceous periods.
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This subsection contains mainly Mesozoic granitic and mafic plutonic rocks, Jura-Triassic volcanic rocks, Pre-Cretaceous metamorphic rocks, and Eocene and Oligocene marine and nonmarine and Miocene marine sedimentary rocks.
Coastal Hills (Bailey)
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Thermal sag of this rift permitted accumulation of thick Triassic-Jurassic sandstone sequences.
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The stratiform and strata-bound iron ore deposits in the Middle Triassic series in the lower reaches of the Yangzi River were formerly considered as simple contact-metasomatic ore deposits.
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It happened 252 million years ago, at the boundary of the Permian and Triassic geological ages.
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The Mesozoic era lasted from about 251 to 66 million years ago and includes the Triassic, Jurassic, and Cretaceous periods.
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Was There a Mass Extinction of Land Plants at the Permian - Triassic Boundary ( PTB )?
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In the June issue of the Journal of Vertebrate Paleontology, which I'm only just now getting around to, I read the type description of the new species of "rauisuchid" archosaur Postosuchus alisonae from the Triassic of North Carolina.
At Least I'm Not At Dragon*Con (Part One)
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These creatures succeeded the pelycosaurian synapsids as the rulers of the land, until they in turn were supplanted by the archosaurs during the early Triassic.
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There's strong evidence to suggest that the massive climate disruptions which appear to have caused the Permian-Triassic extinctions were driven by the outgassing of CO2 from the huge upsurge of volcanicity in Siberia.
Environment news, comment and analysis from the Guardian | guardian.co.uk
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These forms represent all of the major groups of the first, Triassic, dinosaurian radiation: Sauropodomorpha, Theropoda, Cerapoda, and Thyreophora, respectively.
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Based on the close relationship of thrips to the lophioneurid psocopteroids, it is likely that the Triassic and Jurassic thrips were saprophagous, just as the psocopterans and merothripids are today.
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The study work reveal that orogenic zone of west Qinling formed in Triassic Period should be a favorable area for finding Cu-Mo-Au deposit due to the thick crust and frequently magmatic activities.
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The extinction occurred at the boundary between the Permian and Triassic periods at a time when all land was concentrated in a supercontinent called Pangea.
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Discovery of Perm ian-Triassic mixed conodont assemblage from the
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The closest relatives of the sauropods, a group of primitive dinosaurs known as prosauropods, extends back to the Late Triassic (about 220 million years ago) implying that the sauropods may also have had a history extending back as far.
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Symbiosis with unicellular phototrophs has existed in anthozoans at least since the Triassic (225 million years ago) and likely constitutes a source of selective pressures that have deeply modified the host's physiology.
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Consequently, lung ventilation rates and, by extension, metabolic rates of the earliest mammals, and at least some Triassic Period therapsids, are likely to have approached or been equal to those of extant mammals.
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The Permo-Triassic boundary is put below the bed of illite clay rock (the 34th bed of the Ermen Section, Fig. 1), because ammonoid Lytophiceras sp. is found at the superjacent bed.
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As a result, Triassic rocks in the hanging wall thrust onto Upper Cretaceous rocks in the footwall.
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Molten diabase and basalt (i.e., “trap rock”) intruded shales, argillites, conglomerates, and reddish sandstones along the scattered sills and dikes of Ecoregion 64b during the Triassic Period.
Ecoregions of New Jersey (EPA)
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This study, which represents part of my Ph.D. thesis, could not have been performed without the thorough taxonomic work carried out by many Triassic ammonoid systematists that has provided the basis for this study.
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It is apparently absent from Triassic faunas of northeastern Asia and the Boreal region, and until now has not been reported from the Triassic of the Americas.
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From the Early Permian to the Late Triassic, however, there are only a few reports of mite wood borers.
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In three main coal - forming periods arsenic contents decrease from Tertiary, Late Triassic to Late Permian.
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The largest would be the ‘Permo-Triassic’ extinction, between the Permian and Triassic periods, of the Paleozoic and Mesozoic eras.
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I geographically triassic what all the steinman is compulsorily on the bulge dissent norepinephrine so that i can canonization the shrubbery and tirolean. has to spear at its specifically fizzing, appropriately prophylactic haplotype, and stambul apogamy they jejunostomy to coot faker in mollification to do it.
Rational Review
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Many other types of animals - both amphibians and reptiles - shared the Triassic world.
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Since it is unlikely that a large warm-blooded animal will loose this metabolic characteristic and become cold-blooded, there is a solid case that Triassic thecodonts were also ectotherms.
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The blackband ores are confined to the coal measures of the Triassic rocks in Chatham and Moore counties.
North Carolina and its Resources.
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The soils of Ecoregion 64a were derived from Triassic sandstone, shale, siltstone, and argillite of the Brunswick, Stockton, Lockatong, Gettysburg, and New Oxford formations; lithology is distinct from the metamorphic rocks of the surrounding portions of the Piedmont.
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA)
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The aetosaurs, or Stagonolepididae, were large herbivorous armoured archosaurs, and an important characteristic part of Late Triassic faunas.
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The event, known as the Great Dying, occurred about 250 million years ago at the boundary between the Permian and Triassic periods.
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The Great Dying occurred between the Permian and Triassic periods, when all of today's continents were concentrated in one great land mass called Pangea.
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These precocious (Late Triassic) tetradactyl fliers developed a unique wing predicated upon a greatly elongated fourth finger.
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Permian shelf-type successions there pass into Triassic sandstones and shales with detached Permian limestone blocks, overlain by Upper Triassic neritic carbonates.
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The sequence overlies Upper Triassic to Upper Cretaceous rocks and locally covers Palaeogene karst bauxite deposits.
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The Triassic ammonoids represent the phylogenetic bridge between Paleozoic and Jurassic ammonoids.
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The Rocks of Belogradchik are formed of versicoloured Triassic sandstones and conglomerates.
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Even the youngest Triassic rocks are strongly folded, in places by isoclinal, recumbent folds.
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The Liard Formation is a variably thick succession of calcareous sandstone and arenaceous limestone that was deposited within and adjacent to the Peace River embayment in the Middle Triassic.
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Minimally, this specimen proves that the most featherlike structures in a non-avian Mesozoic vertebrate are found in a late Triassic basal archosaur, a thecodont.
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The discovery of the radiolarian fossils has great significance for the stratigraphic division and correlation of the Triassic and study of tectonic evolution in the northern Qiangtang area.
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The Triassic productive intervals of and gas in Tahe oil field belong to low - resistivity reservoirs.
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During the Triassic, the entire planet was indeed a hothouse and entirely deglaciated.
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Middle Triassic anhydrite and dolomite form a sequence of strong reflectors, as does Lower Cretaceous sandstone.
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Thus, by the early Late Triassic sauropods had relatively small forefeet that were held in a nearly vertical, digitigrade posture in which the five weight-bearing digits were arranged in a gentle arch.
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Ecoregion 84d is lithologically distinct from the reddish shale, sandstone, argillite, and siltstone of the neighboring Triassic Lowlands (64a).
Ecoregions of New Jersey (EPA)
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The small meat-eating dinosaur lived in North America during the Late Triassic period 228 to 208 million years ago.
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The rocks are formed of versicoloured Triassic sandstone and conglomerates.
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In any case, most if not all Triassic scleractinians, whether zooxanthellate or not, show skeletal construction different from modern (strictly post-Cretaceous) equivalents.
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Uppermost Permian and Triassic terrestrial sediments conformably overlie the terminal volcanic rocks.
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Marine deposition was followed by alluvial progradation marking the onset of continental deposition, which dominated the rest of the Triassic in the region.
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The ganoids had already reached their evolutionary climax in the Permian and Triassic, some 270-190 million years ago; today they are few in number when compared with the dominant bony fishes.
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Two possibilities unrelated to Triassic-Jurassic subaerial exposure are: oxidation of a pyritized surface by modern oxidizing ground waters; or the occurrence of a ferromanganese oxide crust.
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Early ammonoids or goniatites may have simple zig-zag sutures, but they become increasingly complex from the Triassic to the Cretaceous.
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Geological evidence shows that all continents remained united as the supercontinent Pangea during Triassic times.
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Activity in the mantle may also have been responsible for the changeable nature of the Earth's magnetic polarity, which swung from reverse early in the Triassic to normal and back to reverse many times throughout the rest of the era.
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After restudy of the holotype and some topotypes, however, Xinjiangoceras Wang, 1983 had been suppressed as a junior synonym of the Triassic genus Procarnites Arthaber, 1911.
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Much of the craton remained stable up to Triassic time, with sedimentary sequences dominated by shallow-water and subaerial sediments.
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The coccolithophorids range in age from Triassic to Recent, and form a major constituent of Mesozoic and Tertiary chalks.
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I stayed in (too weary for eyes on me, and the autumn sky) and read "Superiority, Competition, and Opportunism in the Evolutionary Radiation of Dinosaurs" (Science, 12 September 2008), which examines the question of just how dinosaurs managed to come out of the Triassic so much better off than their crurotarsan contemporaries (non-dinosaurian archosaurs, including phytosaurs, aetosaurs, 'rauisuchians,' etc.).
"Hallways...always..."
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When I was a kid growing up, my books on dinosaurs, when describing the Triassic period, featured drawings and descriptions of small bipedal thecodonts, looking like miniature theropod dinosaurs.
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Dismembered counterparts of the Beysehir-Hoyran Nappes further east are restored as a Triassic rifted margin.
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The mineralization is hosted by flysch rocks (of Triassic age) cut by dikes.
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Middle Triassic anhydrite and dolomite form a sequence of strong reflectors, as does Lower Cretaceous sandstone.
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For example, some Triassic cornuspirids appear to possess a microgranular wall rather than a porcellaneous wall, and thus could be classified as Fusulinida.
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The upper unit consists of red continental clastic rocks of presumed Pcrmo-Triassic age, overlain by Triassic carbonate rocks.
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The oldest known dinosaurs, from the middle Triassic of South America, were saurischians.
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And in any case, what your general quote certainly does not establish is even the claim that the surface of the earth corresponding to Alaska in the Triassic period was, in fact, in a zone much closer to the equator; it speaks in general possibilities, not about the specific case of Alaska.
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None of the Triassic superfamilies of ammonites lived on into the Jurassic, but three new superfamilies appeared in the Early Jurassic.
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Of those groups only the higher Dicynodontia were to be successful, and in fact these stocky, toothless and beaked animals remained the dominant terrestrial herbivores right up until the Carnian epoch (Late Triassic period).
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The time classed as late Permian and Triassic on the other hand was one of uplift, disturbance, volcanic action and extreme climates, which gave us the traps of Mt. Tom, the Palisades of the Hudson, the bold scenery of the Bay of Fundy and the gypsum and red beds which are generally supposed to be quite largely formed beneath the air and beds of tillite formed beneath glaciers.
Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86
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I've been making my way through the September 2008 Journal of Paleontology, and so there was "A new desmatosuchine aetosaur (Archosauria; Suchia) from the Upper Triassic Tecovas Formation (Dockum Group) of Texas," "A juvenile skull of the primitive African ornithischian dinosaur Heterodontosaurus tucki from the 'Stormberg' of South Africa," and "The anatomy, affinity, and phylogenetic significance of Illemoraspis kirkinskayae (Osteostraci) from the Devonian of Siberia.
"The lengths that I will go to, the distance in your eyes..."
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Blake, Tintori, and Hagdorn and Blake and Hagdorn restudied the scanty Triassic record in light of that of the late Paleozoic.
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The metaclastic rocks have a pervasive foliation, with the character of a rough cleavage in the Permo-Triassic quartzites, and a finely penetrative differentiated crenulation cleavage in the phyllites and the graphitic mica schist.
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The Kuangshanliang and Tianjingshan present a duplex which comprises of a shallow fault-bend fold of late Triassic and a deep blind stacking anticline imbricated by several thrust sheets of Cenozoic.
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Discovery of Perm ian-Triassic mixed conodont assemblage from the Akasaka Limestone, Gifu Prefecture.
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Conodonts were mostly small, elongate, eel-shaped marine animals that inhabited a variety of environments in Paleozoic and Triassic seas.
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The upper and the lower jaws were certainly covered with horny beaks in life, like the beak in turtles and, it can be assumed, in the Triassic rhynchosaurs.
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For example, some Triassic cornuspirids appear to possess a microgranular wall rather than a porcellaneous wall, and thus could be classified as Fusulinida.
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Although Early Triassic rifting in East Greenland and west of Norway has been described previously, limited evidence has been presented, mainly because of absence of data.
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Such a pattern likely arose in the common ancestor of birds, dinosaurs, and alligators--called archosaurs--during the Triassic period, 251 to 199 million years ago.
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The cause of crater formation can be envisaged as the subsidence of a structurally bound Triassic layer into a subjacent Zechstein succession, which was extending and thinning.
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This indicates that there existed a short period of radiolarian development before the great extinction at the Permian-Triassic transition.
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The mountain, Jebel Ichkeul, is composed of Triassic and Jurassic metamorphosed limestones with fossiliferous pseudo-dolomitic marbles exposed in quarries on its south-western slopes.
Ichkeul National Park, Tunisia
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The marine deposits of Early and Middle Triassic are widespread over Paleo-Tethyan realm, including South China, Indo-China, Malay Peninsula and regions to their south.
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The prospect lies within a belt of rocks assigned to the Triassic Amphitheatre Group of the Wrangellia terrane, consisting of basalt flows and minor interflow argillite, limestone, and tuff, commonly with gabbroic sills.
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The Rocks of Belogradchik are formed of versicoloured Triassic sandstones and conglomerates.
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Permian and Triassic plutonic complexes comprise monzonite, granite, granodiorite or tonalite with minor gabbro and diorite.
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The only other Eurasian finely and densely costate species known to me that is closely comparable is Leptochondria minima from the Lower Triassic of Russia.
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The aetosaurs, or Stagonolepididae, were large herbivorous armoured archosaurs, and an important characteristic part of Late Triassic faunas.
