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34 entries under expression topic. ×

7
paleocene extinction(extinction, period, geochronology)
7
Cretaceous-Paleogene extinction event(geohistory, event, extinction)
6
cretaceous-paleogene boundary(extinction, period, paleogene)
6
oligocene extinction(extinction, period, paleogene)
5
eocene extinction(extinction, period, paleogene)
2
Hyposaurus(noun, fauna, extinction, paleocene)
2
Madtsoia(noun, fauna, eocene, extinction)
2
Palaeophiidae(noun, fauna, eocene, extinction)
2
Paleogene species extinction(extinction, period, paleogene)
2
Trigonia(noun, fauna, extinction, paleocene)
2
Yaminuechelys(noun, fauna, extinction, paleocene)
1
Alamitophis(fauna, extinction, paleogene)
1
Bartonian extinction(extinction, period, geochronology)
1
Boltysh crater(geology, crater, paleogene)
1
Chattian extinction(extinction, period, geochronology)
1
Chicxulub crater(geology, crater, paleogene)
1
Chota Formation(geohistory, formation, paleogene)
1
Denver Formation(geohistory, formation, paleogene)
1
Eocene genus extinction(extinction, period, geochronology)
1
Ferris Formation(geohistory, formation, paleogene)
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APASmart Define. (1970). paleogene genus extinction thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/paleogene_genus_extinction/thesaurus/related
ChicagoSmart Define. 1970. "paleogene genus extinction thesaurus" https://smartdefine.org/paleogene_genus_extinction/thesaurus/related (accessed September 29, 2026).
HarvardSmart Define 1970, paleogene genus extinction thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/paleogene_genus_extinction/thesaurus/related>.
MLASmart Define. "paleogene genus extinction thesaurus" 1 January 1970. Web. 29 September 2026. <https://smartdefine.org/paleogene_genus_extinction/thesaurus/related>