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242 entries under extinction topic. ×

7
paleocene extinction(expression, period, geochronology)
7
Cretaceous-Paleogene extinction event(expression, geohistory, event)
7
Glyphocyphidae(noun, family, urchin)
7
Glyptosaurinae(noun, lizard, subfamily)
7
Synechodontiformes(noun, order, shark)
6
cretaceous-paleogene boundary(expression, period, paleogene)
6
oligocene extinction(expression, period, paleogene)
5
eocene extinction(expression, period, paleogene)
2
Cimolesta(noun, fauna, eocene)
2
Epihippus(noun, fauna, eocene)
2
Haplohippus(noun, fauna, eocene)
2
Hyposaurus(noun, expression, fauna, paleocene)
2
Madtsoia(noun, expression, fauna, eocene)
2
Palaeophiidae(noun, expression, fauna, eocene)
2
Paleogene species extinction(expression, period, paleogene)
2
Trigonia(noun, expression, fauna, paleocene)
2
Yaminuechelys(noun, expression, fauna, paleocene)
1
Acheronodon(noun, fauna, paleocene)
1
Adapidae(noun, fauna, eocene)
1
Adapinae(noun, fauna, eocene)
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APASmart Define. (1970). paleogene genus extinction thesaurus. Retrieved September 30, 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 30, 2026).
HarvardSmart Define 1970, paleogene genus extinction thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/paleogene_genus_extinction/thesaurus/related>.
MLASmart Define. "paleogene genus extinction thesaurus" 1 January 1970. Web. 30 September 2026. <https://smartdefine.org/paleogene_genus_extinction/thesaurus/related>