Synonyms|0Antonyms|0|Broader|2Narrower|15Related|337
5
Eocene first appearance(expression, geohistory, appearance, geochronology)
5
Extant Paleogene first appearance(expression, geohistory, appearance, geochronology)
5
Oligocene first appearance(expression, geohistory, appearance, geochronology)
5
Paleocene first appearance(expression, geohistory, appearance, geochronology)
2
Batrachosauroides(noun, animal, geohistory, extinction)
2
Calappa(noun, animal, geohistory, extinction)
2
Calappilia(noun, animal, geohistory, extinction)
2
Cormocyon(noun, animal, geohistory, extinction)
2
Cupuladria(noun, animal, geohistory, extinction)
2
Pangasius(noun, animal, geohistory, extinction)
2
Portunus(noun, animal, geohistory, extinction)
2
Ranina(noun, animal, geohistory, extinction)
2
Smilacaceae(noun, geohistory, plant, extinction)
2
Symethis(noun, animal, geohistory, extinction)
2
Turbellaria(noun, animal, geohistory, extinction)
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APASmart Define. (1970). paleogene first appearance thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/paleogene_first_appearance/thesaurus/narrower
ChicagoSmart Define. 1970. "paleogene first appearance thesaurus" https://smartdefine.org/paleogene_first_appearance/thesaurus/narrower (accessed September 24, 2026).
HarvardSmart Define 1970, paleogene first appearance thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/paleogene_first_appearance/thesaurus/narrower>.
MLASmart Define. "paleogene first appearance thesaurus" 1 January 1970. Web. 24 September 2026. <https://smartdefine.org/paleogene_first_appearance/thesaurus/narrower>