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59 entries under geohistory topic. ×

10
cretaceous-paleogene boundary(expression, extinction, period, boundary)
7
Cretaceous-Paleogene extinction event(expression, event, extinction, paleogene)
3
Madtsoia(noun, fauna, eocene, extinction)
2
Afrotarsius(noun, extinction, oligocene)
2
Alamitophis(noun, fauna, extinction)
2
Alamosaurus(noun, fauna, extinction)
2
Alvarez hypothesis(expression, geology, hypothesis)
2
Archaeohyrax(noun, extinction, oligocene)
2
Bennettitales(noun, extinction, oligocene)
2
Caedocyon(noun, extinction, oligocene)
2
Calamophylliopsis(noun, extinction, oligocene)
2
Chota Formation(expression, formation, paleogene)
2
Compsemys(noun, fauna, extinction)
2
Cormocyon(noun, extinction, oligocene)
2
Cymatoceras(noun, extinction, oligocene)
2
Cymatoceratidae(noun, extinction, oligocene)
2
Denver Formation(expression, formation, paleogene)
2
Eosimiidae(noun, extinction, oligocene)
2
Essonodon(noun, fauna, extinction)
2
Ferris Formation(expression, formation, paleogene)
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For more, visit Eocene_extinction on Power Thesaurus
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APASmart Define. (1970). eocene extinction thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/eocene_extinction/thesaurus/related
ChicagoSmart Define. 1970. "eocene extinction thesaurus" https://smartdefine.org/eocene_extinction/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, eocene extinction thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/eocene_extinction/thesaurus/related>.
MLASmart Define. "eocene extinction thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/eocene_extinction/thesaurus/related>