英和和英

語源

Specific use of cretaceous.

発音

• IPA: /kɹəˈteɪ.ʃəs/
• 韻: -eɪʃəs

固有名詞

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.

派生語

• end-Cretaceous

参考

• Appendix:Geologic timescale