4
Priabonian(noun, geology, history, age)
4
Rhaetian(noun, geology, history, age)
4
Rupelian(noun, geology, history, age)
4
Santonian(noun, geology, history, age)
4
Selandian(noun, geology, history, age)
4
Serpukhovian(noun, geology, history, age)
4
Serravallian(noun, geology, history, age)
4
Sinemurian(noun, geology, history, age)
4
Thanetian(noun, geology, history, age)
4
Tithonian(noun, geology, history, age)
4
Toarcian(noun, geology, history, age)
4
Tortonian(noun, geology, history, age)
4
Tournaisian(noun, geology, history, age)
4
Turonian(noun, geology, history, age)
4
Valanginian(noun, geology, history, age)
4
Visean(noun, geology, history, age)
4
Ypresian(noun, geology, history, age)
4
Zanclean(noun, geology, history, age)
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APASmart Define. (2015). geological age thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/geological_age/thesaurus/narrower
ChicagoSmart Define. 2015. "geological age thesaurus" https://smartdefine.org/geological_age/thesaurus/narrower (accessed September 28, 2026).
HarvardSmart Define 2015, geological age thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/geological_age/thesaurus/narrower>.
MLASmart Define. "geological age thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/geological_age/thesaurus/narrower>