英语词汇“nummulite”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

nummulite

/ˈnʌmjʊlʌɪt

noun Palaeontology

The flat disc-shaped calcareous shell of a foraminiferan, found commonly as a fossil up to 8 cm across in marine Tertiary deposits.

Family Nummulitidae, order Foraminiferida: several genera, including Nummulites.

The occurrence higher in the succession of nummulites and neritic fossils indicates overall shallowing upwards....

They found that the Eocene nummulites lived in nutrient-rich environments during a warm climatic phase.
In the seas, the calcareous nannofossils were still in evidence but in shallow waters the benthonic nummulite and other larger foraminifera became very abundant.

Early 19th century: from Latin nummulus (diminutive of nummus 'coin') + -ite¹.

单词	nummulite
释义	nummulite /ˈnʌmjʊlʌɪt / noun Palaeontology The flat disc-shaped calcareous shell of a foraminiferan, found commonly as a fossil up to 8 cm across in marine Tertiary deposits. Family Nummulitidae, order Foraminiferida: several genera, including Nummulites. The occurrence higher in the succession of nummulites and neritic fossils indicates overall shallowing upwards.... They found that the Eocene nummulites lived in nutrient-rich environments during a warm climatic phase. In the seas, the calcareous nannofossils were still in evidence but in shallow waters the benthonic nummulite and other larger foraminifera became very abundant. Origin Early 19th century: from Latin nummulus (diminutive of nummus 'coin') + -ite¹.
随便看	mutant Mutare mutarotate mutarotating mutarotation mutarotational mutasaddi mutasarrif mutascope mutase mutate mutation mutational mutationally mutationism mutationist mutation mink mutation pressure mutation rate mutation theory mutatis mutandis mutative mutato nomine mutator mutatory