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201 entries under noun topic. ×

4
Plesiadapiformes(creature, appearance, paleocene)
4
Plesiadapoidea(creature, appearance, paleocene)
4
Prionomyrmex(creature, appearance, eocene)
4
Pristichampsidae(creature, appearance, paleocene)
4
Proborhyaenidae(creature, appearance, eocene)
4
Procerapachys(creature, appearance, eocene)
4
Prolimnocyon(creature, appearance, paleocene)
4
Prorastomidae(creature, appearance, eocene)
4
Proteopithecidae(creature, appearance, eocene)
4
Protocetidae(creature, appearance, eocene)
4
Psephophorus(creature, appearance, oligocene)
4
Pyrocyon(creature, appearance, eocene)
4
Pyrotheria(creature, appearance, paleocene)
4
Raoellidae(creature, appearance, eocene)
4
Remingtonocetidae(creature, appearance, eocene)
4
Rhyssoplax(creature, appearance, oligocene)
4
Sarkastodon(creature, appearance, eocene)
4
Sebecidae(creature, appearance, paleocene)
4
Simimyidae(creature, appearance, eocene)
4
Sinopa(creature, appearance, eocene)
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APASmart Define. (1970). paleogene first appearance thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/paleogene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "paleogene first appearance thesaurus" https://smartdefine.org/paleogene_first_appearance/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, paleogene first appearance thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/paleogene_first_appearance/thesaurus/related>.
MLASmart Define. "paleogene first appearance thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/paleogene_first_appearance/thesaurus/related>