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120 entries under eocene topic. ×

2
Archaeotherium(noun, creature, geohistory)
2
Arsinoitheriidae(noun, creature, geohistory)
2
Asiadapinae(noun, creature, geohistory)
2
Asterostomatidae(noun, creature, geohistory)
2
Astrapotheriidae(noun, creature, geohistory)
2
Azibiidae(noun, creature, geohistory)
2
Barytherium(noun, creature, geohistory)
2
Basilosaurinae(noun, creature, geohistory)
2
Bear dog(expression, creature, geohistory)
2
Borhyaenidae(noun, creature, geohistory)
2
Bothriogenys(noun, creature, geohistory)
2
Brontotheriidae(noun, creature, geohistory)
2
Cercamoniinae(noun, creature, geohistory)
2
Chalicothere(noun, creature, geohistory)
2
Chalicotherioidea(noun, creature, geohistory)
2
Coeloma(noun, creature, geohistory)
2
Conoclypus(noun, creature, geohistory)
2
Cosmopolitodus hastalis(expression, creature, geohistory)
2
Cynodictis(noun, creature, geohistory)
2
Daphoenus(noun, creature, geohistory)
For more, visit Paleocene_first_appearance on Power Thesaurus
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APASmart Define. (1970). paleocene first appearance thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/paleocene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "paleocene first appearance thesaurus" https://smartdefine.org/paleocene_first_appearance/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, paleocene first appearance thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/paleocene_first_appearance/thesaurus/related>.
MLASmart Define. "paleocene first appearance thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/paleocene_first_appearance/thesaurus/related>