知識貝殼
知識貝殼
Definition: The “Cambrian substrate revolution”or“Agronomic revolution”,evidenced intrace fossils,is the diversification of animal burrowing during the early Cambrian period.寒武紀底質(zhì)革命hán wǔ jì dǐ zhì gé mìng海洋底質(zhì)狀態(tài)在寒武紀曾發(fā)生重大轉(zhuǎn)變,即顯生宙型混 ......（本文共 252 字 ） [閱讀本文] >>