1
Patriofelis(noun, animal, geohistory, appearance)
1
Philisidae(noun, animal, geohistory, appearance)
1
Phiomyidae(noun, animal, geohistory, appearance)
1
Priabonian first appearance(expression, appearance, period, geochronology)
1
Prionomyrmex(noun, animal, geohistory, appearance)
1
Proborhyaenidae(noun, animal, geohistory, appearance)
1
Procerapachys(noun, animal, geohistory, appearance)
1
Prorastomidae(noun, animal, geohistory, appearance)
1
Proteopithecidae(noun, animal, geohistory, appearance)
1
Protocetidae(noun, animal, geohistory, appearance)
1
Pyrocyon(noun, animal, geohistory, appearance)
1
Raoellidae(noun, animal, geohistory, appearance)
1
Remingtonocetidae(noun, animal, geohistory, appearance)
1
Sarkastodon(noun, animal, geohistory, appearance)
1
Simimyidae(noun, animal, geohistory, appearance)
1
Sinopa(noun, animal, geohistory, appearance)
1
Sivaladapidae(noun, animal, geohistory, appearance)
1
Spathorhynchus(noun, animal, geohistory, appearance)
1
Stenoplesictidae(noun, animal, geohistory, appearance)
1
Ypresian first appearance(expression, appearance, period, geochronology)
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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>