What's the difference between cretaceous and jurassic?

Cretaceous


Definition:

  • (a.) Having the qualities of chalk; abounding with chalk; chalky; as, cretaceous rocks and formations. See Chalk.

Example Sentences:

  • (1) In the investigation, the arcade-shaped prisms typical of recent mammals were first seen in material from the Cretaceous period.
  • (2) Fossil glycoproteins of the soluble organic matrix are present in an 80-million-year-old mollusk shell from the Late Cretaceous Period.
  • (3) The Masiakasaurus knopfleri, a theropod dinosaur from the Late Cretaceous period, was named after him in 2001.
  • (4) Species of Spirorchis arose and diversified with North America emydids following the separation of North America and Europe in the late Cretaceous or early Tertiary periods.
  • (5) The diversity of tetrapods increased from the Devonian to the Permian, remained roughly constant during the Mesozoic, and then began to increase in the late Cretaceous, and continued to do so during the Tertiary.
  • (6) We report here the discovery of two mammal teeth from the early Cretaceous of Cameroon.
  • (7) Consequently, the brain's geometry has changed notably since the late Cretaceous.
  • (8) The known range of the Primates is extended down from the middle Paleocene to the early Paleocene and late Cretaceous by a new genus and two new species from Montana, Purgatorius unio and P. ceratops.
  • (9) In the Late Cretaceous (80 to 65 million years ago) when the fossil record improves, mammalian enamel investigated from North American localities, are found to be prismatic; allotherian (multituberculate) and metatherian (marsupial) enamels are usually tubular, while eutherian (placental) ones are not.
  • (10) Spirorchinae arose later (late Cretaceous period) as a Laurasian component parasitic in the more recent pond turtles (Emydidae + Bataguridae).
  • (11) Dr Corwin Sullivan of the Institute of Palaeontology and Palaeoanthropology states that “It’s always great to meet a new Cretaceous tyrant, and Lythronax might just be a particularly noteworthy one.
  • (12) Dr Lee Margetts, another member of the Manchester team, said: "The new study clearly demonstrates the dinosaur was more than capable of strolling across the Cretaceous planes of what is now Patagonia, South America."
  • (13) Integral to the origin of the eutherian style of embryogenesis was the evolution during Cretaceous time of neomorphic, extraembryonic tissues (i.e., trophoblast) having physiological properties that allowed the unique combination of intimate apposition of fetal and maternal tissues and circulatory systems, along with sustained, active morphogenesis.
  • (14) If so, these pathways are as old in phylogenetic history as the last common ancestor of marsupial and placental mammals--dating from the late Jurassic to early Cretaceous, perhaps 145-120 million years ago.
  • (15) Levels of sequence divergence, as well as the age and affinities of some mainland fossil taxa, suggest that the origin of Cricosaura was associated with the tectonic evolution of the Greater Antilles in the late Cretaceous.
  • (16) – Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous … 'What will survive of us is love', wrote Philip Larkin.
  • (17) These changes suggest: (i): an expansion in the exploitation of dry fruits and seeds by mammals on the ground as well as in the trees after the terminal Cretaceous dinosaur extinction; (ii) a relation between large nuts and rodents, which appear in the late Palaeocene and radiate in the late Eocene; (iii) a relation between primates and fleshy fruits established in the early-Middle Eocene when tropical forests reached their maximum latitudinal extent; (iv) a hiatus of several million years in the vertebrate exploitation of leaves after dinosaur extinction and before the first few mammalian herbivores in the Middle Palaeocene, followed by an expansion in the late Eocene when climates cooled and more open vegetation became established.
  • (18) Photograph: Andy Farke In the Late Cretaceous of North America, hadrosaurs were at their peak.
  • (19) Like these giants from the end of the Cretaceous, Lythronax has a relatively broad skull with the orbits facing forwards.
  • (20) These showed that the amphiumid and dicamptodontine-rhyacotritonine nerve patterns had evolved by the Late Cretaceous, and the sirenid pattern had probably evolved by that time.

Jurassic


Definition:

  • (a.) Of the age of the middle Mesozoic, including, as divided in England and Europe, the Lias, Oolite, and Wealden; -- named from certain rocks of the Jura mountains.
  • (n.) The Jurassic period or formation; -- called also the Jura.

Example Sentences:

  • (1) Fossil eggs attributable to dinosaur (probably prosauropod) parentage that have been recovered from the early Jurassic Elliot Formation sediments at the Rooidraai locality possess shells that are similar to those of birds and crocodilians, and distinctly unlike those of chelonians and gekkonids.
  • (2) Everybody wants to be part of something that has become a cultural phenomenon.” Jurassic World took $1.668bn earlier this year.
  • (3) I think, in all honestly, if I could be Bradley Whitford I would be very, very happy.” He becomes almost drawlingly dreamy, rolling his “r”s as he leans against the warm oolite cliffs of this Jurassic Coast, until rudely interrupted by me, asking whether there’s talk of a Broadchurch 3 .
  • (4) Amino acid analyses have been made of the insoluble protein, soluble peptide, and free amino acid fractions isolated from a series of fossil pecten shells of ages from the Pleistocene through the Jurassic.
  • (5) Rather than rushing the film into production following the box-office failure of previous instalment Jurassic Park III in 2001, Universal spent more than a decade working out the best way to mount a reboot, and was rewarded with $1.64bn in receipts.
  • (6) But at the end of the day, I’m just taking big swings.” Jurassic World is in cinemas from 12 June
  • (7) Cocos, the remote emerald tip of a towering underwater mountain range which was the setting for the fictional Isla Nublar in the novel Jurassic Park, has served as a pirate hideaway, whaling station, penal colony and a pit stop for Colombian drug runners.
  • (8) Jurassic world had terrible characterisation and excessive use of CGI.
  • (9) Triassic-Jurassic, c 200 million years ago Three-quarters of species were lost, again most likely due to another huge outburst of volcanism.
  • (10) The Avengers, $392.5m Facebook Twitter Pinterest The Guardian Film Show discusses Jurassic World.
  • (11) Jurassic Park, for example, was never going to be a charming story about a young boy who successfully befriends a ravenous if depressed Tyrannosaurus rex.
  • (12) Across eight cask pumps, seven keg lines and three hand-pulled ciders, the Rook runs the gamut from exotic European imports (Opat's self-explanatory orange and mandarin Czech pils) to beers from lesser-spotted UK micros, such as Grafters and Jurassic Brewhouse.
  • (13) The $70.9 million it made at the US box office didn't give it the clout of Jurassic Park, Mrs Doubtfire or Indecent Proposal among the year's top moneyspinners.
  • (14) Add to that the fact that the entire East Devon coastline from Exmouth to the border with Dorset is part of the designated world heritage site, the Jurassic Coast.
  • (15) The genus Ginkgo is a north temperate gymnosperm taxon represented by fossilized leaves and wood from the early Jurassic through the Pliocene, and by the living species G. biloba native to eastern China.
  • (16) Facebook Twitter Pinterest The film team review Jurassic World At Bubba Gump, he recognised a customer: Rae Dawn Chong, an actor who had appeared in 80s hits Commando and The Color Purple.
  • (17) That elusive must-see aura – a combination in 1993 of Hollywood’s most starred director Steven Spielberg and Industrial Light & Magic’s then-unique special-effects prowess – was what made Jurassic Park the first $1bn film; 22 years later though, Spielberg is only executive-producing, and CGI is very much the bog-standard grouting of the blockbuster industry.
  • (18) Chris Pratt’s next attempt to cement his action-hero status in Jurassic World sees him in the relatively untested hands of writer and director Colin Trevorrow, known for just one movie – the lo-fi time-travel indie Safety Not Guaranteed; Fox’s latest attempt to reboot The Fantastic Four sees Josh Trank, director of impressive found-footage thriller Chronicle, getting a chance to shine; and Looper’s Rian Johnson has been hired as the director of Star Wars Episode VIII.
  • (19) Elsewhere in Dorset, we've rounded-up the best days out in east and west of the county; and the best campsites , many of which overlook the Jurassic coast.
  • (20) Star Wars: The Force Awakens – the five finest fan theories Read more If Abrams’s critically acclaimed film does fail to surpass Jurassic World, studio bosses can point to the fact that the movie does not hit screens in the world’s most populous nation until 9 January.