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12 entries under period topic. ×

3
Eocene genus extinction(expression, geohistory, extinction, genus)
3
Oligocene genus extinction(expression, geohistory, extinction, genus)
3
Paleocene genus extinction(expression, geohistory, extinction, genus)
2
Bartonian extinction(expression, extinction, geochronology)
2
Chattian extinction(expression, extinction, geochronology)
2
Lutetian extinction(expression, extinction, geochronology)
2
Paleocene species extinction(expression, extinction, geochronology)
2
Priabonian extinction(expression, extinction, geochronology)
2
Rupelian extinction(expression, extinction, geochronology)
2
Selandian extinction(expression, extinction, geochronology)
2
Thanetian extinction(expression, extinction, geochronology)
2
Ypresian extinction(expression, extinction, geochronology)
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APASmart Define. (1970). paleogene extinction thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/paleogene_extinction/thesaurus/related
ChicagoSmart Define. 1970. "paleogene extinction thesaurus" https://smartdefine.org/paleogene_extinction/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, paleogene extinction thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/paleogene_extinction/thesaurus/related>.
MLASmart Define. "paleogene extinction thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/paleogene_extinction/thesaurus/related>