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11 entries under geohistory topic. ×

11
cretaceous-paleogene boundary(expression, extinction, period, boundary)
5
Cretaceous-Paleogene extinction event(expression, event, extinction)
2
Chota Formation(expression, formation, paleogene)
2
Denver Formation(expression, formation, paleogene)
2
Ferris Formation(expression, formation, paleogene)
2
Fort Union Formation(expression, formation, paleogene)
2
Guaduas Formation(expression, formation, paleogene)
2
Hell Creek Formation(expression, formation, paleogene)
2
Lopez de Bertodano Formation(expression, formation, paleogene)
2
Ojo Alamo Formation(expression, formation, paleogene)
2
Santa Lucia Formation(expression, formation, paleogene)
For more, visit Oligocene_extinction on Power Thesaurus
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APASmart Define. (1970). oligocene extinction thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/oligocene_extinction/thesaurus/related
ChicagoSmart Define. 1970. "oligocene extinction thesaurus" https://smartdefine.org/oligocene_extinction/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, oligocene extinction thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/oligocene_extinction/thesaurus/related>.
MLASmart Define. "oligocene extinction thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/oligocene_extinction/thesaurus/related>