150 entries under geohistory topic. ×

6
Bartonian first appearance(expression, eocene, period, appearence)
6
Lutetian first appearance(expression, eocene, period, appearence)
6
Priabonian first appearance(expression, eocene, period, appearence)
6
Ypresian first appearance(expression, eocene, period, appearence)
6
Extant Oligocene first appearance(expression, appearance, period)
6
Extant Paleocene first appearance(expression, appearance, period, paleogene)
6
eocene first appearance(expression, appearance, period)
6
extant paleogene first appearance(expression, eocene, period)
6
oligocene first appearance(expression, eocene, period, paleogene)
4
paleocene first appearance(expression, eocene, period)
3
Accipitridae(noun, creature, ypresian)
3
Accipitriformes(noun, creature, lutetian)
3
Aequornithes(noun, creature, paleocene)
3
Afroaves(noun, creature, paleocene)
3
Afrotheria(noun, creature, paleocene)
3
Agroecomyrmecinae(noun, creature, lutetian)
3
Aldrovanda(noun, creature, paleocene)
3
Alligatorinae(noun, creature, paleocene)
3
Amblyoponinae(noun, creature, lutetian)
3
Ampullinopsis(noun, creature, paleocene)
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APASmart Define. (1970). extant eocene first appearance thesaurus. Retrieved October 1, 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 October 1, 2026).
HarvardSmart Define 1970, extant eocene first appearance thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related>.
MLASmart Define. "extant eocene first appearance thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related>