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322 entries under geohistory topic. ×

1
Anaptomorphinae(noun, creature, paleocene)
1
Andrewsarchus(noun, creature, lutetian)
1
Andrias scheuchzeri(expression, creature, oligocene)
1
Anomalure(noun, creature, eocene)
1
Anomaluromorpha(noun, creature, eocene)
1
Anseranatidae(noun, creature, eocene)
1
Anthidium exhumatum(expression, creature, priabonian)
1
Anthidium scudderi(expression, creature, priabonian)
1
Anthropornis(noun, creature, priabonian)
1
Apidium(noun, creature, priabonian)
1
Apogon(noun, creature, eocene)
1
Arachnopusiidae(noun, creature, eocene)
1
Araliaceae(noun, creature, eocene)
1
Archaeohyracidae(noun, creature, paleocene)
1
Archaeonycteridae(noun, creature, ypresian)
1
Arctoidea(noun, creature, eocene)
1
Arctostylopida(noun, creature, paleocene)
1
Argyropelecus(noun, creature, eocene)
1
Arsinoitherium(noun, creature, priabonian)
1
Astrapotheria(noun, creature, paleocene)
For more, visit Eocene_first_appearance on Power Thesaurus
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APASmart Define. (1970). eocene first appearance thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/eocene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "eocene first appearance thesaurus" https://smartdefine.org/eocene_first_appearance/thesaurus/related (accessed October 2, 2026).
HarvardSmart Define 1970, eocene first appearance thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/eocene_first_appearance/thesaurus/related>.
MLASmart Define. "eocene first appearance thesaurus" 1 January 1970. Web. 2 October 2026. <https://smartdefine.org/eocene_first_appearance/thesaurus/related>