bn:00014983n
Noun Named Entity
Categories: Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference, Articles with short description, Cambrian, Geological periods
EN
Cambrian  Cambrian period  Acadian Epoch  Cambrian era  Tommotian age
EN
From 544 million to about 500 million years ago; marine invertebrates WordNet 3.0
English:
geology
Definitions
Relations
Sources
EN
From 544 million to about 500 million years ago; marine invertebrates WordNet 3.0
The period from 544 million to about 500 million years ago; characterized by marine invertebrates Open English WordNet
The Cambrian Period was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. Wikipedia
The Cambrian period. Wiktionary
The Cambrian geologic period. Wiktionary (translation)