How to Use Cretaceous in a Sentence

Cretaceous

adjective

• These teeth spanned a wide age range, from the modern era back to the Cretaceous period.
  — Melissa Cristina Márquez, Forbes, 1 Mar. 2025
• Not all experts are convinced this means Cretaceous ants, too, chatted via pheromones.
  — science.org, 3 July 2024
• The king of the dinosaurs may have not been the only Cretaceous carnivore to prey on its own kin.
  — Alex Orlando, Discover Magazine, 1 May 2024
• The deposit would have been on the seafloor when it was formed during the Cretaceous period.
  — Sara Hashemi, Smithsonian Magazine, 23 May 2025
• The trouble was the area these fossils were found in would have been inland in the Late Cretaceous period.
  — Joshua Rapp Learn, Discover Magazine, 15 July 2024
• The large theropod roamed what is now known as the northern part of Africa during the Cretaceous period.
  — Elizabeth Gamillo, Discover Magazine, 27 Feb. 2024
• The gigantic mosasaur lived at the end of the Cretaceous period, around 66 million years ago.
  — Sarah Kuta, Smithsonian Magazine, 29 Apr. 2025
• The early Cretaceous marks the period when some dinosaurs were evolving into birds.
  — Paul Smaglik, Discover Magazine, 21 May 2024
• Like birds, mammals are another elusive group in the Late Cretaceous fossil record.
  — Kristi Curry Rogers, Scientific American, 1 Feb. 2024
• The species lived 76 million years ago during the Cretaceous period.
  — Irene Wright, Miami Herald, 23 Jan. 2025
• So in the case of pelagornithids, this particular role would be filled by flying reptiles in the Cretaceous period.
  — Flora Lichtman, Scientific American, 31 May 2023
• This is quite unusual as most dinosaurs that died in the Jurassic or Cretaceous periods are found without their skull.
  — Rachel Cormack, Robb Report, 30 Mar. 2023
• The amber dates to the Cretaceous period about 98 million years ago, according to the study.
  — Irene Wright, Miami Herald, 7 Aug. 2025
• While in the field with his students, Cotter says their main focus is often Cretaceous or glacial geology.
  — Carlyn Kranking, Smithsonian Magazine, 17 Sep. 2024
• Skeletons had been found in the area, especially Spinosaurus, from the late Cretaceous period.
  — Bethany Brookshire, Scientific American, 27 June 2024
• Sixty-six million years ago, a marine creature, minding its own business at the bottom of a Cretaceous sea, munched on some sea lilies—then didn’t feel too great.
  — Margherita Bassi, Smithsonian Magazine, 30 Jan. 2025
• That means Cretaceous dinosaurs experienced a planet with 372 days in each year.
  — Evan Bush, NBC News, 27 Mar. 2024
• The ichthyosaur is a sea-dwelling dinosaur that was reportedly found during both the Jurassic and Cretaceous periods.
  — Joshua Hawkins, BGR, 2 Jan. 2023
• One specimen trapped in Cretaceous amber dates to 100 million years old and reveals armored spikes along its trunk segments.
  — Elizabeth Gamillo, Discover Magazine, 2 Oct. 2023
• At least 20 new ceratopsid species have been named over the past 15 years, most of them from a relatively narrow span of Cretaceous time.
  — Riley Black, Smithsonian Magazine, 4 Sep. 2024
• The leatherback family has been on earth since the Cretaceous period, 110 million years ago, but much is still unknown about these turtles and their habits.
  — Nina Burleigh, Smithsonian Magazine, 4 Jan. 2024
• The clay was in between rocks from the Cretaceous and Paleogeneperiods and dates from the time the dinosaurs disappeared.
  — Hans Sues, Discover Magazine, 15 Aug. 2024
• Although one feature resembles that of other Cretaceous birds, the poor preservation and lack of bones kept the researchers from classifying it as a new species.
  — Paul Smaglik, Discover Magazine, 12 Feb. 2025
• The dinosaur was part of the Cretaceous period, the last era of the dinosaurs, and lived between 97 million and 94 million years ago.
  — Saleen Martin, USA TODAY, 17 Aug. 2022
• For guide Tim Parrish, introducing anglers from across the country to these Cretaceous leftovers is a labor of love.
  — Chris Dorsey, Forbes.com, 9 June 2025
• The Cretaceous period is known for its prehistoric titans like the Tyrannosaurus rex and Triceratops — and as the last dinosaur age.
  — Irene Wright, Miami Herald, 18 July 2024
• These birds lived during the early Cretaceous period some 125 million years ago, in what is now eastern China.
  — science.org, 3 July 2024
• The study claims that bees arose in arid regions of western Gondwana during the early Cretaceous period, and as new continents formed, the insects went with them.
  — Tim Newcomb, Popular Mechanics, 1 Aug. 2023
• Initial hypotheses suggested those become more elaborate over time in response to the growing threat of Cretaceous predators.
  — ArsTechnica, 28 Aug. 2025
• The scientists therefore conclude that the meteorite impact was the ultimate cause of the mass extinction event at the end of the Cretaceous period.
  — David Bressan, Forbes, 23 Dec. 2024