1
Mesonyx(noun, animal, geohistory, appearance)
1
Mesotheriidae(noun, animal, geohistory, appearance)
1
Miohippus(noun, animal, geohistory, appearance)
1
Nanotragulus(noun, animal, geohistory, appearance)
1
Notharctidae(noun, animal, geohistory, appearance)
1
Notharctinae(noun, animal, geohistory, appearance)
1
Notohippidae(noun, animal, geohistory, appearance)
1
Notostylopidae(noun, animal, geohistory, appearance)
1
Oligopithecidae(noun, animal, geohistory, appearance)
1
Orohippus(noun, animal, geohistory, appearance)
1
Oromerycidae(noun, animal, geohistory, appearance)
1
Pagrus(noun, animal, geohistory, appearance)
1
Pakicetidae(noun, animal, geohistory, appearance)
1
Palaeoamasiidae(noun, animal, geohistory, appearance)
1
Palaeochiropterygidae(noun, animal, geohistory, appearance)
1
Palaeogale(noun, animal, geohistory, appearance)
1
Palaeomerycidae(noun, animal, geohistory, appearance)
1
Palaeotheriidae(noun, animal, geohistory, appearance)
1
Parapithecidae(noun, animal, geohistory, appearance)
1
Parapithecoidea(noun, animal, geohistory, appearance)
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APASmart Define. (1970). eocene first appearance thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/eocene_first_appearance/thesaurus/narrower
ChicagoSmart Define. 1970. "eocene first appearance thesaurus" https://smartdefine.org/eocene_first_appearance/thesaurus/narrower (accessed September 26, 2026).
HarvardSmart Define 1970, eocene first appearance thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/eocene_first_appearance/thesaurus/narrower>.
MLASmart Define. "eocene first appearance thesaurus" 1 January 1970. Web. 26 September 2026. <https://smartdefine.org/eocene_first_appearance/thesaurus/narrower>