Jura
131Jura-trias — Ju ra tri as, n. (Geol.) A term applied to many American Mesozoic strata, in which the characteristics of the Jurassic and Triassic periods appear to be blended. {Ju ra tri*as sic}, a. [1913 Webster] …
132Jura-triassic — Jura trias Ju ra tri as, n. (Geol.) A term applied to many American Mesozoic strata, in which the characteristics of the Jurassic and Triassic periods appear to be blended. {Ju ra tri*as sic}, a. [1913 Webster] …