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211 entries under creature topic. ×

4
Oligopithecidae(noun, appearance, eocene)
4
Omomyidae(noun, appearance, paleocene)
4
Orohippus(noun, appearance, eocene)
4
Oromerycidae(noun, appearance, eocene)
4
Orophodontidae(noun, appearance, oligocene)
4
Oxyaena(noun, appearance, paleocene)
4
Pagrus(noun, appearance, eocene)
4
Pakicetidae(noun, appearance, eocene)
4
Palaeoamasiidae(noun, appearance, eocene)
4
Palaeocarpilius(noun, appearance, eocene)
4
Palaeochiropterygidae(noun, appearance, eocene)
4
Palaeogale(noun, appearance, eocene)
4
Palaeomerycidae(noun, appearance, eocene)
4
Palaeonictis(noun, appearance, paleocene)
4
Palaeotheriidae(noun, appearance, eocene)
4
Pampatheriidae(noun, appearance, oligocene)
4
Pantodonta(noun, appearance, paleocene)
4
Parapithecidae(noun, appearance, eocene)
4
Parapithecoidea(noun, appearance, eocene)
4
Paroreodon(noun, appearance, oligocene)
For more, visit Paleogene_first_appearance on Power Thesaurus
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APASmart Define. (1970). paleogene first appearance thesaurus. Retrieved September 29, 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 September 29, 2026).
HarvardSmart Define 1970, paleogene first appearance thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/paleogene_first_appearance/thesaurus/related>.
MLASmart Define. "paleogene first appearance thesaurus" 1 January 1970. Web. 29 September 2026. <https://smartdefine.org/paleogene_first_appearance/thesaurus/related>