Cambrian explosion
English
/ˈkam.bɹɪ.ən ɪkˈspləʊ.ʒən/, /ˈkæm.bɹi.ən ɛkˈsploʊ.ʒən/
proper noun
Definitions
- (evolutionary) The relatively rapid appearance, during the Cambrian Period around 541 million years ago, of most major animal phyla, as demonstrated in the fossil record.
Etymology
Derived from Welsh Cymru (Wales).
Origin
Welsh (Colloquial)
Cymru
Gloss
Wales