Crinoids became the most abundant echinoderms of the Ordovician, and some were the ancestors of today's stalkless feather stars and stalked sea lilies.
海百合成为奥陶纪最丰富的棘皮动物,有些是今天无柄羽星和有柄海百合的祖先。
单词 | feather star |
例句 |
原声例句
PBS地球-动物趣闻 Crinoids became the most abundant echinoderms of the Ordovician, and some were the ancestors of today's stalkless feather stars and stalked sea lilies. 海百合成为奥陶纪最丰富的棘皮动物,有些是今天无柄羽星和有柄海百合的祖先。 |
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