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188 entries under eocene topic. ×

2
Songbird(noun, creature, geohistory)
2
Soricomorpha(noun, creature, geohistory)
2
Sparisoma(noun, creature, geohistory)
2
Squirrel(noun, creature, geohistory)
2
Stomachetosellidae(noun, creature, geohistory)
2
Strepsirrhini(noun, creature, geohistory)
2
Swift(noun, creature, geohistory)
2
Talpidae(noun, creature, geohistory)
2
Tapiroidea(noun, creature, geohistory)
2
Taxaceae(noun, creature, geohistory)
2
Tenebrio(noun, creature, geohistory)
2
Tenrec(noun, creature, geohistory)
2
Tomistominae(noun, creature, geohistory)
2
Trachurus(noun, creature, geohistory)
2
Treeshrew(noun, creature, geohistory)
2
Trichiurus(noun, creature, geohistory)
2
Tridacninae(noun, creature, geohistory)
2
Triturus(noun, creature, geohistory)
2
Trochodendraceae(noun, creature, geohistory)
2
Tropicbird(noun, creature, geohistory)
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APASmart Define. (1970). extant oligocene first appearance thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/extant_oligocene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "extant oligocene first appearance thesaurus" https://smartdefine.org/extant_oligocene_first_appearance/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, extant oligocene first appearance thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/extant_oligocene_first_appearance/thesaurus/related>.
MLASmart Define. "extant oligocene first appearance thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/extant_oligocene_first_appearance/thesaurus/related>