cretaceous period In A Sentence

We found 71 'cretaceous period' sentence examples to help you understand how to use cretaceous period in a sentence.

• Countershading existed in marine reptiles in the cretaceous period.
• They were found around the globe during the Carboniferous to the cretaceous period.
• Some echinoids, such as " Micraster ", which is found in the cretaceous period Chalk Formation of England and France, serve as zone or index fossils.
• The first was the Chicxulub event, the second the unlocated impactor at the end of the cretaceous period and then a straggler some 100, 000 years later.
• This clam fossil is from the cretaceous period, approximately 100 million years ago.
• They lived in the cretaceous period, Albian stage ( 109.0 to 99.7 Ma ).
• It's a high speed thriller from the cretaceous period to the present and beyond.
• Subsequently, the tree forms of flowering plants evolved during the cretaceous period.
• ""'Tethysaurus " "'is an extinct genus of tethysaurine mosasauroid from the Early Turonian ( Late cretaceous ) period.
• ""'Sellacoxa " "'is a genus of iguanodont dinosaur which existed in what is now England during the Early cretaceous period ( lower Valanginian stage, around 140 mya ).
• The prehistoric reptile lived in the cretaceous period, about 125 million years ago.
• In the early cretaceous period oceanic waters flooded the area and fossiliferous limestones were deposited over the entire Maya Mountains.
• But nearly 100 million years ago relatives of modern snakes undulated through cretaceous period waters aided by a paddlelike tail and dragging a pair of short, footless hind legs.
• From the view of stratigraphy, they all belong to the cretaceous period.
• The cretaceous period, 100 million years ago, was 6 14 degrees Celsius warmer than now.
• While other genera from the family Palaemonidae are known from the Aptian age in the lower cretaceous period, " Yongjiacaris " represents the first member described from the Barremian age.
• Much of Colorado was covered by an expanding sea during the ensuing cretaceous period.
• Volcanism began to decline along the length of the arc about 60 million years ago during the Albian and Aptian faunal stages of the cretaceous period.
• Hey, even in the cretaceous period, it was still hard for a girl to get a date.
• It just happens to be smack dab in the middle of the cretaceous period.
• The Pterosaurians of the cretaceous period, just before their extinction both in Europe and in North America, were of enormous size, and some became toothless.
• The genus first appeared in the fossil record in the cretaceous period.
• Fossil pterasterids have been found as early as the upper Campanian of the cretaceous period.
• Torosaurus was a herbivorous dinosaur that lived during the Late cretaceous period about 70 million years ago in what is now North America.
• The first, during the cretaceous period formed Baffin Bay.
• These brachiopods are stationary epifaunal suspension feeders, They lived in the cretaceous period, from 136.4 to 130.0 Ma.
• Living during the late cretaceous period, 75-66 million years ago.
• First appearing at the beginning of the Jurassic period they thrived throughout the cretaceous period.
• Andy sings Julia cretaceous period, which Dwight insists is not a good dinosaur.
• The cretaceous period in geology did not appear at a given stage in the development of the changes.
• Sea levels fluctuated during the ensuing cretaceous period.
• Deposition of the Taylor beds marks the point of eustatic regression which continued until the end of the cretaceous period.
• ""'Vitimopsyche " "'is an extinct genus of Mecopteran which existed in what is now northeastern China during the early cretaceous period.
• Seeds of Acer are rare compared with the leaves, which can be found in rocks dating back to the cretaceous period.
• Much of the Danish chalk, including the wellknown limestone of Faxe, belongs to the highest or " Danian " subdivision of the cretaceous period.
• The cretaceous period was 60 120 million years ago.
• Extinction of the dinosaurs at the end of the cretaceous period.
• Its sole genus is, commonly known as the " marginated half net fern . " Hemidictyaceae is considered to be a sister family to Aspleniaceae, believed to have diverged during the cretaceous period.
• Hadrosaurus was probably 25 or 30 feet long and lived roughly 80 million years ago in the cretaceous period.
• "' Rhabdodontids "'were herbivorous ornithopod dinosaurs from the cretaceous period.
• A member of the Dromaeosauridae of dinosaurs, it was a bird-like theropod dinosaur, which flourished during the cretaceous period.
• ""'Irritator " "'is a genus of spinosaurid dinosaur that lived in the early cretaceous period ( Albian stage ), around 110 million years ago.
• However, she does find evidence that the Neognathae and, therefore, also the Palaeognathae had diverged no later than the Early Campanian age of the cretaceous period.
• The Upper cretaceous period was between 75 and 70 million years ago.
• The Protoceratops was a vegetable-eating dinosaur about the size of a sheep that experts believe lived in herds during the cretaceous period.
• ""'Proplanicoxa " "'is a genus of iguanodont dinosaur which existed in what is now England during the Early cretaceous period ( late Barremian stage, around 126 mya ).
• The wishbone report says that the five-inch-wide dinosaur furcula, or wishbone, had come from a velociraptor, a meat-eating dinosaur about six feet long that lived at the end of the cretaceous period.
• "Serpula " has lived since the cretaceous period, according to fossils found in the cretaceous Black Creek Formation of North Carolina.
• The story takes place 6500 years ago in the cretaceous period.
• The majority of the fossils found appeared to be from the Late cretaceous period.
• It lived in China during the Late cretaceous period.
• They lived during the cretaceous period, Barremiarrean age.
• When an eight-ton tyrannosaurus roamed the Earth during the cretaceous period, the ground shook.
• These fast-moving nektonic carnivores lived in the cretaceous period ( 89.3 to 84.9 Ma ).
• They are the Triassic period, the Jurassic period and the cretaceous period.
• In the production of these mountains and plateau there was first, at the close of the cretaceous period, an upheaval of the earth's substance to form a mountain rim and a depressed basin.
• The formation was deposited in shallow marine to shoreline environments during the Albian stage of the Early cretaceous period.
• ""'Cretevania " "'is an extinct genus of Evaniidae, which existed in what is now China, Burma, England, Lebanon, Mongolia, Russia and Spain during the cretaceous period.
• These semi-infaunal detritivores lived during the Upper cretaceous period, from 70.6 to 66.043 Ma.
• One petrified log from the cretaceous period preserved in a small belemnites and other mollusks.
• In 2009, paleontologist Mark Purnell conducted a Late cretaceous period.
• It was emplaced during a period of kimberlite volcanism in the Late cretaceous epoch.
• The Creature Time Match activity teaches the child about the dinosaurs and the corresponding time period whether it be the Jurassic, cretaceous or Tertiary period.
• The eruptions are said to have begun with the ejection of syenites, diorites and diabases, which probably took place at the close of the cretaceous or the beginning of the Eocene period.
• Triassic is the oldest period of Mesozoic followed successively by Jurassic and cretaceous Periods.
• Within that period the principal valleys were excavated, and their lower parts have been filled up subsequently with J urassic, cretaceous and Tertiary deposits.
• After being periodically submerged during the Jurassic and cretaceous periods, the region finally became land in the Tertiary period.
• The geological formation of the soil belongs to the Quaternary and Pliocene period in its upper strata, and to the Eocene and cretaceous in the lower.
• In magnetostratigraphy, the Coniacian is part of magnetic chronozone C34, the so-called cretaceous Magnetic Quiet Zone, a relatively long period with normal polarity.
• The earliest known bird, Archaeopteryx, lived during the Jurassic, the period before the cretaceous.
• Towards the Caspian, especially between Petrovsk and the river Sulak, the cretaceous system is well represented, and upon its rocks rest marls, shales, and sandstones of the Eocene period.