56 entries under noun topic. ×

4
Rupelian(geology, history, age)
4
Santonian(geology, history, age)
4
Selandian(geology, history, age)
4
Serpukhovian(geology, history, age)
4
Serravallian(geology, history, age)
4
Sinemurian(geology, history, age)
4
Thanetian(geology, history, age)
4
Tithonian(geology, history, age)
4
Toarcian(geology, history, age)
4
Tortonian(geology, history, age)
4
Tournaisian(geology, history, age)
4
Turonian(geology, history, age)
4
Valanginian(geology, history, age)
4
Visean(geology, history, age)
4
Ypresian(geology, history, age)
4
Zanclean(geology, history, age)
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APASmart Define. (2015). geological age thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/geological_age/thesaurus/narrower
ChicagoSmart Define. 2015. "geological age thesaurus" https://smartdefine.org/geological_age/thesaurus/narrower (accessed October 1, 2026).
HarvardSmart Define 2015, geological age thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/geological_age/thesaurus/narrower>.
MLASmart Define. "geological age thesaurus" 13 April 2015. Web. 1 October 2026. <https://smartdefine.org/geological_age/thesaurus/narrower>