Cretaceous

Specific use of cretaceous.

• IPA^(key): /kɹəˈteɪ.ʃəs/

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• Rhymes: -eɪʃəs

Cretaceous

1. (geology) The geologic period within the Mesozoic era that comprises lower and upper epochs from about 146 to 66 million years ago.
   • 1992, Rudolf M[athias] Schuster, The Hepaticae and Anthocerotae of North America: East of the Hundredth Meridian, volume V, Chicago, Ill.: Field Museum of Natural History, →ISBN, pages 3–4:

     As with the Lejeuneaceae, this pattern of massive speciation appears to be correlated with the Cretaceous explosion of the angiosperms and the simultaneous creation of a host of new microenvironments, differing in humidity, light intensity, texture, etc.

   • 2017 August 9, Mark Carnall, “Why do cephalopods produce ink? And what's ink made of, anyway?”, in The Guardian‎^[1]:

     Fossils are particularly well described from the Carboniferous, Triassic, Jurassic and Cretaceous periods and have been found in the USA, England, Russia, Lebanon and Germany. Sites such as Lyme Regis in Dorset have particularly yielded number of Jurassic “squid” ink sacs and nodules (Doguzhaeva et al. 2004).

• end-Cretaceous

• Appendix:Geologic timescale