0 from or referring to the period of time between about 543 and 490 million years ago, in which many different types of invertebrates (= animals with no back bone) first appeared:
2 the Cambrian period (= the period between about 543 and 490 million years ago):
Now nobody can deny that life back in the Cambrian era was already extremely varied.
When we consider another event of the Cambrian period, an interesting parallel emerges.
The evidence fitted, but there was something of a gap between the first eye and the Cambrian explosion event.
The Gallery is on Cambrian Place in Swansea.
The Talyllyn Railway was built to connect the slate quarries above Abergynolwyn with the Cambrian Railway at Towyn.
They explored quarries where 500-million-year-old fossils from the Cambrian had been found.
The fossil jellyfish in the Burgess shale were thriving by the middle of the Cambrian.
Just before the Cambrian, the deep oceans were made oxygen rich and sulfide poor by an unusual spate of undersea landslides.
中文繁体
寒武紀的(寒武紀,距今約5.43億至4.9億年前的地質時期,無脊椎動物開始大量出現)…
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寒武纪的(寒武纪,距今约5.43亿至4.9亿年前的地质时期,无脊椎动物开始大量出现。)…
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cambriano…
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kambr…
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