3
Ornithorhynchidae(noun, creature, geohistory, paleocene)
3
Owl(noun, creature, geohistory, paleocene)
3
Pacific giant salamander(expression, creature, geohistory, paleocene)
3
Paenungulata(noun, creature, geohistory, paleocene)
3
Pangolin(noun, creature, geohistory, paleocene)
3
Parrot(noun, creature, geohistory, ypresian)
3
Parsley frog(expression, creature, geohistory, lutetian)
3
Passeroidea(noun, creature, appearance, eocene, geogistory)
3
Paucituberculata(noun, creature, appearance, eocene, geogistory)
3
Penguin(noun, creature, geohistory, paleocene)
3
Phalangeriformes(noun, creature, appearance, eocene, geogistory)
3
Phidoloporidae(noun, creature, geohistory, paleocene)
3
Phiomorpha(noun, creature, appearance, eocene, geogistory)
3
Pilosa(noun, creature, geohistory, paleocene)
3
Pimelodidae(noun, creature, appearance, eocene, geogistory)
3
Pinnotheridae(noun, creature, geohistory, paleocene)
3
Placentalia(noun, creature, geohistory, paleocene)
3
Podocnemididae(noun, creature, geohistory, paleocene)
3
Polinices(noun, creature, geohistory, paleocene)
3
Polychrotinae(noun, creature, geohistory, ypresian)
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APASmart Define. (1970). extant eocene first appearance thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "extant eocene first appearance thesaurus" https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related (accessed September 30, 2026).
HarvardSmart Define 1970, extant eocene first appearance thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related>.
MLASmart Define. "extant eocene first appearance thesaurus" 1 January 1970. Web. 30 September 2026. <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related>