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2 entries under extinction topic. ×

2
Crossochelys(noun, america, genus)
2
Hyposaurus(noun, america, genus)
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APASmart Define. (1970). paleogene reptile of south america thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/paleogene_reptile_of_south_america/thesaurus/narrower
ChicagoSmart Define. 1970. "paleogene reptile of south america thesaurus" https://smartdefine.org/paleogene_reptile_of_south_america/thesaurus/narrower (accessed October 2, 2026).
HarvardSmart Define 1970, paleogene reptile of south america thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/paleogene_reptile_of_south_america/thesaurus/narrower>.
MLASmart Define. "paleogene reptile of south america thesaurus" 1 January 1970. Web. 2 October 2026. <https://smartdefine.org/paleogene_reptile_of_south_america/thesaurus/narrower>