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7 entries under period topic. ×

4
Paleocene genus extinction(expression, extinction, geochronology)
3
Selandian extinction(expression, extinction, geochronology)
3
Thanetian extinction(expression, extinction, geochronology)
0
cretaceous-paleogene boundary(expression, extinction, geochronology)
0
eocene extinction(expression, extinction, geochronology)
0
oligocene extinction(expression, extinction, geochronology)
0
paleogene extinction(expression, extinction, geochronology)
For more, visit Paleocene_species_extinction on Power Thesaurus
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APASmart Define. (1970). paleocene species extinction thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/paleocene_species_extinction/thesaurus/related
ChicagoSmart Define. 1970. "paleocene species extinction thesaurus" https://smartdefine.org/paleocene_species_extinction/thesaurus/related (accessed October 2, 2026).
HarvardSmart Define 1970, paleocene species extinction thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/paleocene_species_extinction/thesaurus/related>.
MLASmart Define. "paleocene species extinction thesaurus" 1 January 1970. Web. 2 October 2026. <https://smartdefine.org/paleocene_species_extinction/thesaurus/related>