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Cambrian - Wikipedia While the early Cambrian showed such diversification that it has been named the Cambrian Explosion, this changed later in the period, when there occurred a sharp drop in biodiversity
Cambrian中文 (简体)翻译：剑桥词典 - Cambridge Dictionary Cambrian adjective (TIME) Add to word list geology specialized 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
The Cambrian Period The Cambrian world was bracketed between two ice ages, one during the late Proterozoic and the other during the Ordovician During these ice ages, the decrease in global temperature led to mass extinctions
Cambrian Period | Natural History Museum The Cambrian* Period begins the Phanerozoic Eon, the last 542 million years during which fossils with hard parts have existed It is the first division of the Paleozoic Era (542Ma -251Ma)
Cambrian Period - Fossils, Rocks, Animals | Britannica Cambrian Period - Fossils, Rocks, Animals: Cambrian rocks have a special biological significance, because they are the earliest to contain diverse fossils of animals These rocks also include the first appearances of most animal phyla that have fossil records
Cambrian中文 (繁體)翻譯：劍橋詞典 - Cambridge Dictionary Cambrian adjective (TIME) Add to word list geology specialized 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