bn:00059450n
Noun Named Entity
Categories: Ordovician, Articles with short description, Geological periods, long volume value, 1879 in paleontology
EN
Ordovician  Ordovician period  Ashgill  Ashgillian  Caradoc
EN
From 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds WordNet 3.0
Definitions
Relations
Sources
EN
From 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds WordNet 3.0
The period from 500 million to 425 million years ago; characterized by conodonts and ostracods and algae and seaweeds Open English WordNet
The Ordovician is a geologic period and system, the second of six periods of the Paleozoic Era. Wikipedia
Second period of the Paleozoic Era 485-444 million years ago Wikidata
The Ordovician period. Wiktionary
Ordovician period. Wiktionary (translation)