Six million years prior to the KT boundary, there were about twenty species of ammonites in the world's oceans.
The amazing thing is that we see the same pattern in the fish record,
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Six million years prior to the KT boundary, there were about twenty species of ammonites in the world's oceans.
The amazing thing is that we see the same pattern in the fish record,
重点单词 | 查看全部解释 | |||
prior | ['praiə] | |||
species | ['spi:ʃiz] | |||
extinction | [iks'tiŋkʃən] | 联想记忆 | ||
mammal | ['mæməl] | 联想记忆 | ||
absolutely | ['æbsəlu:tli] | |||
pattern | ['pætən] | |||
boundary | ['baundri] | |||
terrestrial | [ti'restriəl] | 联想记忆 |