Cretaceous
adjective
geologyspecializeduk/krɪˈteɪ.ʃəs/us/krɪˈteɪ.ʃəs/from or referring to theperiodoftimebetween around 144 and 65 millionyearsago, in whichplantswithflowersfirstappeared:
白垩纪的；来自白垩的（白垩纪为距今约1.44亿年至0.65亿年前的地质时期，有花植物首次出现）the Cretaceousperiod白垩纪
Cretaceousrocks白垩纪时期的岩石
Sponges are oftenpreservedinsideflints, which wereoriginallydepositedas hardlayerswithin the Cretaceouschalk.
- Itthrivedin the late Cretaceousperiodonly a few millionyearsbefore all thedinosaursonEarthbecameextinct.
- There was anabundanceofammonites,consideredindexorganismsof theuppermostCretaceousenvironment.
- Thevolcanoesinquestionmay haveeruptedtoo early toaccountfor the Cretaceouswarming.
Geology - general words
- Anthropocene
- aquifer
- auriferous
- biozone
- Cambrian
- carboniferous
- cementation
- continental crust
- Holocene
- hoodoo
- interbed
- Jurassic
- karst
- plate tectonics
- post-depositional
- pyroclastic
- Quaternary
- sedimentation
- tectonic
- the rock cycle
You can also find related words, phrases, and synonyms in the topics:
Prehistory
Specific periods of time
Cretaceous
noun[S]
geologyspecializeduk/krɪˈteɪ.ʃəs/us/krɪˈteɪ.ʃəs/the Cretaceous
theperiodbetween around 144 and 65 millionyearsago, in whichplantswithflowersfirstappeared:
In the Cretaceous,beetlesandflieswere the first pollinators.
Fossilremainsfrom the Cretaceous arealmostalwaysfoundinsedimentarydeposits.
- The Cretaceous was the last of the Mesozoicperiodsand had the mostdramaticandvariedlifeforms.
- The researchersconcludedthat thedinosaurswere doing well at the end of the Cretaceous.
- WidespreadvolcaniceruptionssweptIndiaat the end of the Cretaceous.
Geology - general words
- Anthropocene
- aquifer
- auriferous
- biozone
- Cambrian
- carboniferous
- cementation
- continental crust
- Holocene
- hoodoo
- interbed
- Jurassic
- karst
- plate tectonics
- post-depositional
- pyroclastic
- Quaternary
- sedimentation
- tectonic
- the rock cycle
You can also find related words, phrases, and synonyms in the topics:
Prehistory
Specific periods of time