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380 entries under geohistory topic. ×

2
Callochiton(noun, creature, oligocene)
2
Cane rat(expression, creature, eocene)
2
Caprimulgiformes(noun, creature, paleocene)
2
Carpilioidea(noun, creature, paleocene)
2
Cassis(noun, creature, paleocene)
2
Certhioidea(noun, creature, oligocene)
2
Chaetopleura(noun, creature, oligocene)
2
Chamaesipho(noun, creature, oligocene)
2
Chameleon(noun, creature, paleocene)
2
Cheloniidae(noun, creature, paleocene)
2
Cibicides(noun, creature, paleocene)
2
Cingulata(noun, creature, paleocene)
2
Clavulina(noun, creature, paleocene)
2
Colpophyllia(noun, creature, oligocene)
2
Colubridae(noun, creature, oligocene)
2
Cone snail(expression, creature, eocene)
2
Corallus(noun, creature, paleocene)
2
Corydoras(noun, creature, paleocene)
2
Cottidae(noun, creature, oligocene)
2
Cryptobranchus(noun, creature, paleocene)
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APASmart Define. (1970). extant paleogene first appearance thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "extant paleogene first appearance thesaurus" https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related (accessed October 2, 2026).
HarvardSmart Define 1970, extant paleogene first appearance thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related>.
MLASmart Define. "extant paleogene first appearance thesaurus" 1 January 1970. Web. 2 October 2026. <https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related>