Middle Cambrian
Proper noun
Meaning
Middle Cambrian
(geology, dated) An epoch from 513 to 501 million years ago, ending with the first occurrences of Glyptagnostus reticulatus in the fossil record.
Proper noun
Middle Cambrian
(geology, dated) An epoch from 513 to 501 million years ago, ending with the first occurrences of Glyptagnostus reticulatus in the fossil record.