411 REFERENCE · Wiktionary
Cryptozoic
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
cryptozoic
English
Etymology
From en crypto zoic, as any life from the period was considered to be hidden from scientific examination.
Proper noun
en archaic geology An eon or other time period before the Cambrian, when the fossils of hard-shelled animals first appeared in the geological record.
Synonyms
en Precambrian, en Pre-Cambrian
Translations
Cryptozoic
German: de Kryptozoikum n