3
Smooth-hound(noun, creature, geohistory, ypresian)
3
Somniosus(noun, creature, appearance, eocene, geogistory)
3
Speocarcinus(noun, creature, geohistory, ypresian)
3
Strisores(noun, creature, geohistory, paleocene)
3
Struthionidae(noun, creature, geohistory, paleocene)
3
Suidae(noun, creature, appearance, eocene, geogistory)
3
Sulidae(noun, creature, geohistory, paleocene)
3
Sylvioidea(noun, creature, appearance, eocene, geogistory)
3
Tapir(noun, creature, geohistory, ypresian)
3
Tarsier(noun, creature, geohistory, lutetian)
3
Tarsiiformes(noun, creature, geohistory, paleocene)
3
Tawny nurse shark(expression, creature, geohistory, paleocene)
3
Tetraodontidae(noun, creature, geohistory, lutetian)
3
Thresher shark(expression, creature, geohistory, ypresian)
3
Threskiornithidae(noun, creature, geohistory, ypresian)
3
Tiger shark(expression, creature, geohistory, ypresian)
3
Trachinus(noun, creature, appearance, eocene, geogistory)
3
Triakis(noun, creature, geohistory, paleocene)
3
Triloculinella(noun, creature, appearance, eocene, geogistory)
3
Trogon(noun, creature, geohistory, ypresian)
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APASmart Define. (1970). extant eocene first appearance thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "extant eocene first appearance thesaurus" https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related (accessed September 30, 2026).
HarvardSmart Define 1970, extant eocene first appearance thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related>.
MLASmart Define. "extant eocene first appearance thesaurus" 1 January 1970. Web. 30 September 2026. <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/related>