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380 entries under geohistory topic. ×

3
Thanetian first appearance(expression, period, paleocene)
3
Trachinus(noun, creature, oligocene)
3
Triakis(noun, creature, paleocene)
3
Triloculinella(noun, creature, oligocene)
3
Tsetse fly(expression, creature, eocene)
3
Ungulate(noun, creature, paleocene)
3
Vesper bat(expression, creature, eocene)
3
Whale shark(expression, creature, paleocene)
3
Wolf herring(expression, creature, eocene)
3
Xenarthra(noun, creature, paleocene)
3
Ypresian first appearance(expression, eocene, period)
3
Zonaria(noun, creature, paleocene)
3
Zonitidae(noun, creature, paleocene)
2
Acanthochitona(noun, creature, oligocene)
2
Aeluroidea(noun, creature, oligocene)
2
Aequornithes(noun, creature, paleocene)
2
Afroaves(noun, creature, paleocene)
2
Afrotheria(noun, creature, paleocene)
2
Albatross(noun, creature, oligocene)
2
Aldrovanda(noun, creature, paleocene)
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APASmart Define. (1970). extant paleogene first appearance thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "extant paleogene first appearance thesaurus" https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related (accessed October 2, 2026).
HarvardSmart Define 1970, extant paleogene first appearance thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related>.
MLASmart Define. "extant paleogene first appearance thesaurus" 1 January 1970. Web. 2 October 2026. <https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related>