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4 entries under extinction topic. ×

2
Bakevelliidae(noun, name, geohistory)
2
Lithornis(noun, name, geohistory)
2
Lithornithidae(noun, name, geohistory)
2
Pseudoprotoceras(noun, name, geohistory)
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APASmart Define. (1970). bartonian extinction thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/bartonian_extinction/thesaurus/narrower
ChicagoSmart Define. 1970. "bartonian extinction thesaurus" https://smartdefine.org/bartonian_extinction/thesaurus/narrower (accessed September 24, 2026).
HarvardSmart Define 1970, bartonian extinction thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/bartonian_extinction/thesaurus/narrower>.
MLASmart Define. "bartonian extinction thesaurus" 1 January 1970. Web. 24 September 2026. <https://smartdefine.org/bartonian_extinction/thesaurus/narrower>