COETANEOUS
coetaneous, coeval, contemporaneous
(adjective) of the same period
Source: WordNet® 3.1
Etymology
Adjective
coetaneous (comparative more coetaneous, superlative most coetaneous)
Belonging to the same age, era or period; coeval or contemporary.
Synonyms
• contemporaneous; see also contemporary
Source: Wiktionary
Co`e*ta"ne*ous, a. Etym: [L. coaetaneus; co- + aetas age.]
Definition: Of the same age; beginning to exist at the same time;
contemporaneous.
– Co`e*ta"ne*ous*ly, adv.
And all [members of the body] are coetaneous. Bentley.
Source: Webster’s Unabridged Dictionary 1913 Edition