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2 entries under geology topic. ×

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eocene extinction(expression, geohistory, hypothesis)
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paleogene extinction(expression, hypothesis, paleogene)
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APASmart Define. (1970). alvarez hypothesis thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/alvarez_hypothesis/thesaurus/related
ChicagoSmart Define. 1970. "alvarez hypothesis thesaurus" https://smartdefine.org/alvarez_hypothesis/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, alvarez hypothesis thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/alvarez_hypothesis/thesaurus/related>.
MLASmart Define. "alvarez hypothesis thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/alvarez_hypothesis/thesaurus/related>