nummulite / ˈnʌm yəˌlaɪt /
📖毕业后词汇木棉花木鱼石木棉石木棉岩
nummulite 的定义
n. 名词 noun- a fossil foraminifer of the genus Camerina, having a calcareous, usually disklike shell.
更多nummulite例句
- The nummulite limestone was undoubtedly oceanic, and the other shells contained in it are marine species.
- The Eocene includes a series of sandstones and marls with lignite, and these are overlaid by nummulite limestones.
- The beds are also sometimes named Nummulite limestone, Miliolite limestone, and Cerithium limestone.
- In a stratum just above these are numbers of a large Nummulite (Nummulites lævigatus).
- The tertiary nummulite limestone, so abundant in Egypt, has not hitherto been met with in Nubia.