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380 entries under geohistory topic. ×

2
Cucurbitaceae(noun, creature, paleocene)
2
Curassow(noun, creature, oligocene)
2
Cypriniformes(noun, creature, paleocene)
2
Cyprinodontiformes(noun, creature, oligocene)
2
Daggernose shark(expression, creature, eocene)
2
Delphinoidea(noun, creature, oligocene)
2
Elachorbis(noun, creature, oligocene)
2
Electric ray(expression, creature, eocene)
2
Enoplosus armatus(expression, creature, paleocene)
2
Euarchonta(noun, creature, paleocene)
2
Euarchontoglires(noun, creature, paleocene)
2
Fabaceae(noun, creature, paleocene)
2
False trevally(expression, creature, eocene)
2
Flatfish(noun, creature, paleocene)
2
Free-tailed bat(expression, creature, eocene)
2
Fungus-growing ants(expression, creature, paleocene)
2
Gadidae(noun, creature, oligocene)
2
Galliformes(noun, creature, paleocene)
2
Gemmula(noun, creature, paleocene)
2
Geometer moth(expression, creature, eocene)
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APASmart Define. (1970). extant paleogene first appearance thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "extant paleogene first appearance thesaurus" https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related (accessed October 2, 2026).
HarvardSmart Define 1970, extant paleogene first appearance thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related>.
MLASmart Define. "extant paleogene first appearance thesaurus" 1 January 1970. Web. 2 October 2026. <https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related>