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120 entries under eocene topic. ×

2
Dermotherium(noun, creature, geohistory)
2
Diamantomyidae(noun, creature, geohistory)
2
Dichobunidae(noun, creature, geohistory)
2
Diplocynodontinae(noun, creature, geohistory)
2
Dolichoderus vectensis(expression, creature, geohistory)
2
Echinopedinidae(noun, creature, geohistory)
2
Ecphora(noun, creature, geohistory)
2
Entelodont(noun, creature, geohistory)
2
Eomyidae(noun, creature, geohistory)
2
Eosimiidae(noun, creature, geohistory)
2
Epoicotheriidae(noun, creature, geohistory)
2
Eutypomyidae(noun, creature, geohistory)
2
Florentiamyidae(noun, creature, geohistory)
2
Florissantia(noun, creature, geohistory)
2
Formiciinae(noun, creature, geohistory)
2
Galecyon(noun, creature, geohistory)
2
Gigantostrea(noun, creature, geohistory)
2
Gobiomyidae(noun, creature, geohistory)
2
Ground sloth(expression, creature, geohistory)
2
Hegetotheriidae(noun, creature, geohistory)
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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>