62 entries under eocene topic. ×

6
Bartonian first appearance(expression, geohistory, period, appearence)
6
Lutetian first appearance(expression, geohistory, period, appearence)
6
Priabonian first appearance(expression, geohistory, period, appearence)
6
Ypresian first appearance(expression, geohistory, period, appearence)
6
Extant Chattian first appearance(expression, appearance, geogistory, period)
6
Extant Rupelian first appearance(expression, appearance, geogistory, period)
6
extant paleogene first appearance(expression, geohistory, period)
6
oligocene first appearance(expression, geohistory, period, paleogene)
6
paleogene first appearance(expression, period, appearence)
4
paleocene first appearance(expression, geohistory, period)
3
Acanthochitona(noun, creature, appearance, geogistory)
3
Aeluroidea(noun, creature, appearance, geogistory)
3
Albatross(noun, creature, appearance, geogistory)
3
Alligator(noun, creature, appearance, geogistory)
3
Ameiurus(noun, creature, appearance, geogistory)
3
Aplodontiidae(noun, creature, appearance, geogistory)
3
Buccella(noun, creature, appearance, geogistory)
3
Buteo(noun, creature, appearance, geogistory)
3
Callochiton(noun, creature, appearance, geogistory)
3
Certhioidea(noun, creature, appearance, geogistory)
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APASmart Define. (1970). extant eocene first appearance thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "extant eocene first appearance thesaurus" https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related (accessed September 30, 2026).
HarvardSmart Define 1970, extant eocene first appearance thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related>.
MLASmart Define. "extant eocene first appearance thesaurus" 1 January 1970. Web. 30 September 2026. <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related>