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There can be no doubt that the existing Fauna and Flora is but the last term of a long series of equally numerous contemporary species, which have succeeded one another, by the slow and gradual substitution of species for species, in the vast interval of time which has elapsed between the deposition of the earliest fossiliferous strata and the present day.

There can be no doubt that the existing Fauna and Flora is but the last term of a long series of equally numerous contemporary species, which have succeeded one another, by the slow and gradual substitution of species for species, in the vast interval of time which has elapsed between the deposition of the earliest fossiliferous strata and the present day.

Approximate author period: c. 1860 AD · industrial

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Attribution & collection notes
Author or tradition
Thomas Henry Huxley
Attribution: attributed
Country attributed
Not established
A country attribution does not establish the earliest origin.
Historical period
Approximate author period: c. 1860 AD · industrial
Approximate period for the recorded attribution to Thomas Henry Huxley, based on documented lifetime 1825 to 1895. Source: https://www.wikidata.org/wiki/Q184366 (checked 2026-10-08). This is not a quotation composition date or independent authentication of its attribution. Source: https://www.wikidata.org/wiki/Q184366 (accessed 2026-10-08).
An author lifetime, approximate period or collection date is not necessarily the date when these words were first written or spoken.
Recorded source
Contributor-provided quotation collection

Supplied reference C; CSV row 268654; supplied attribution, independently unverified

A collection's publication date can be later than the words it records.