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201 entries under noun topic. ×

5
Archaeopithecidae(creature, appearance, eocene)
5
Archaeotherium(creature, appearance, eocene)
5
Arctostylopida(creature, appearance, paleocene)
5
Arsinoitheriidae(creature, appearance, eocene)
5
Asiadapinae(creature, appearance, eocene)
5
Asterostomatidae(creature, appearance, eocene)
5
Astrapotheria(creature, appearance, paleocene)
5
Astrapotheriidae(creature, appearance, eocene)
5
Aturia(creature, appearance, paleocene)
5
Azibiidae(creature, appearance, eocene)
5
Barytherium(creature, appearance, eocene)
5
Basilosaurinae(creature, appearance, eocene)
5
Bemalambdidae(creature, appearance, paleocene)
5
Borhyaenidae(creature, appearance, eocene)
5
Borophaginae(creature, appearance, oligocene)
5
Bothriogenys(creature, appearance, eocene)
5
Brontotheriidae(creature, appearance, eocene)
5
Cercamoniinae(creature, appearance, eocene)
5
Chalicothere(creature, appearance, eocene)
5
Chalicotherioidea(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>