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211 entries under creature topic. ×

4
Psephophorus(noun, appearance, oligocene)
4
Pyrocyon(noun, appearance, eocene)
4
Pyrotheria(noun, appearance, paleocene)
4
Raoellidae(noun, appearance, eocene)
4
Remingtonocetidae(noun, appearance, eocene)
4
Rhyssoplax(noun, appearance, oligocene)
4
Sarkastodon(noun, appearance, eocene)
4
Sebecidae(noun, appearance, paleocene)
4
Simimyidae(noun, appearance, eocene)
4
Sinopa(noun, appearance, eocene)
4
Sivaladapidae(noun, appearance, eocene)
4
Sophiornithidae(noun, appearance, paleocene)
4
Sparassodonta(noun, appearance, paleocene)
4
Spathorhynchus(noun, appearance, eocene)
4
Stenomylus(noun, appearance, oligocene)
4
Stenoplesictidae(noun, appearance, eocene)
4
Sveltia(noun, appearance, paleocene)
4
Temnocyon(noun, appearance, oligocene)
4
Temnocyoninae(noun, appearance, oligocene)
4
Teratornithidae(noun, appearance, oligocene)
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APASmart Define. (1970). paleogene first appearance thesaurus. Retrieved September 30, 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 30, 2026).
HarvardSmart Define 1970, paleogene first appearance thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/paleogene_first_appearance/thesaurus/related>.
MLASmart Define. "paleogene first appearance thesaurus" 1 January 1970. Web. 30 September 2026. <https://smartdefine.org/paleogene_first_appearance/thesaurus/related>