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120 entries under eocene topic. ×

2
Merycoidodontoidea(noun, creature, geohistory)
2
Mesonyx(noun, creature, geohistory)
2
Mesotheriidae(noun, creature, geohistory)
2
Miohippus(noun, creature, geohistory)
2
Nanotragulus(noun, creature, geohistory)
2
Notharctidae(noun, creature, geohistory)
2
Notharctinae(noun, creature, geohistory)
2
Notohippidae(noun, creature, geohistory)
2
Notostylopidae(noun, creature, geohistory)
2
Oligopithecidae(noun, creature, geohistory)
2
Orohippus(noun, creature, geohistory)
2
Oromerycidae(noun, creature, geohistory)
2
Pagrus(noun, creature, geohistory)
2
Pakicetidae(noun, creature, geohistory)
2
Palaeoamasiidae(noun, creature, geohistory)
2
Palaeocarpilius(noun, creature, geohistory)
2
Palaeochiropterygidae(noun, creature, geohistory)
2
Palaeogale(noun, creature, geohistory)
2
Palaeomerycidae(noun, creature, geohistory)
2
Palaeotheriidae(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>