| 单词 | biostratigraphy |
| 释义 | biostratigraphy —biostratigraphic /buy'oh strat'i graf"ik/, adj. /buy'oh streuh tig"reuh fee/, n. a branch of geology dealing with the differentiation of sedimentary rock units on the basis of the fossils they contain. [BIO- + STRATIGRAPHY] |
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