Synonyms|0Antonyms|0|Broader|1Narrower|34Related|436

6 entries under oligocene topic. ×

3
Extant Chattian first appearance(expression, geohistory, geogistory, period)
3
Extant Rupelian first appearance(expression, geohistory, geogistory, period)
1
Honey bee(expression, creature, geogistory)
1
John Dory(expression, creature, geogistory)
1
Old World monkey(expression, creature, geogistory)
1
River dolphin(expression, creature, geogistory)
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APASmart Define. (1970). oligocene first appearance thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/oligocene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "oligocene first appearance thesaurus" https://smartdefine.org/oligocene_first_appearance/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, oligocene first appearance thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/oligocene_first_appearance/thesaurus/related>.
MLASmart Define. "oligocene first appearance thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/oligocene_first_appearance/thesaurus/related>