1
Rotifer(noun, animal, geohistory, appearance)
1
Rubiaceae(noun, animal, geohistory, appearance)
1
Saccogaster(noun, animal, geohistory, appearance)
1
Sacoglossa(noun, animal, geohistory, appearance)
1
Sardinella(noun, animal, geohistory, appearance)
1
Sawfish(noun, animal, geohistory, appearance)
1
Scarabaeinae(noun, animal, geohistory, appearance)
1
Scatophagidae(noun, animal, geohistory, appearance)
1
Schizoporellidae(noun, animal, geohistory, appearance)
1
Sciurinae(noun, animal, geohistory, appearance)
1
Sciurini(noun, animal, geohistory, appearance)
1
Sciuromorpha(noun, animal, geohistory, appearance)
1
Scorpaena(noun, animal, geohistory, appearance)
1
Semicassis(noun, animal, geohistory, appearance)
1
Shinisauridae(noun, animal, geohistory, appearance)
1
Shrew(noun, animal, geohistory, appearance)
1
Siren(noun, animal, geohistory, appearance)
1
Smittinidae(noun, animal, geohistory, appearance)
1
Snakehead(noun, animal, geohistory, appearance)
1
Solenostomus(noun, animal, geohistory, appearance)
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APASmart Define. (1970). extant eocene first appearance thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/extant_eocene_first_appearance/thesaurus/narrower
ChicagoSmart Define. 1970. "extant eocene first appearance thesaurus" https://smartdefine.org/extant_eocene_first_appearance/thesaurus/narrower (accessed September 28, 2026).
HarvardSmart Define 1970, extant eocene first appearance thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/narrower>.
MLASmart Define. "extant eocene first appearance thesaurus" 1 January 1970. Web. 28 September 2026. <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/narrower>