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162 entries under extinction topic. ×

2
Eusmilus(noun, fauna, chattian)
2
Fabiania(noun, fauna, eocene)
2
Gastornis(noun, fauna, eocene)
2
Glyphea(noun, fauna, eocene)
2
Gobiatherium(noun, fauna, eocene)
2
Gryphaea(noun, fauna, eocene)
2
Hapalorestes(noun, fauna, eocene)
2
Haplohippus(noun, fauna, eocene)
2
Harpagolestes(noun, fauna, eocene)
2
Honanodon(noun, fauna, eocene)
2
Hoplophoneus(noun, fauna, rupelian)
2
Hukoutherium(noun, fauna, eocene)
2
Hypisodus(noun, fauna, chattian)
2
Hyposaurus(noun, fauna, paleogene)
2
Hypsamasia(noun, fauna, eocene)
2
Idrissia(noun, fauna, eocene)
2
Ilariidae(noun, fauna, chattian)
2
Isotemnidae(noun, fauna, chattian)
2
Kogaionidae(noun, fauna, paleocene)
2
Lammidhania(noun, fauna, eocene)
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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>