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2 entries under paleogene topic. ×

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Extant Paleocene first appearance(expression, geohistory, appearance, period)
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oligocene first appearance(expression, geohistory, eocene, period)
For more, visit Extant_eocene_first_appearance on Power Thesaurus
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APASmart Define. (1970). extant eocene first appearance thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "extant eocene first appearance thesaurus" https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related (accessed September 30, 2026).
HarvardSmart Define 1970, extant eocene first appearance thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related>.
MLASmart Define. "extant eocene first appearance thesaurus" 1 January 1970. Web. 30 September 2026. <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related>