biostratigraphic unit

biostratigraphic unit

[¦bī·ō‚strad·ə′graf·ik ′yü·nət]
(geology)
A stratum or body of strata that is defined and identified by one or more distinctive fossil species or genera without regard to lithologic or other physical features or relations.
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References in periodicals archive ?
Below are the faunal lists for each biostratigraphic unit encountered in the Cenozoic in Wenonah J-75, and in the Oligocene section of Whycocomagh N-90.
Oligocene benthic foraminifera from the Paleogene Wenonah Canyon, Scotian shelf--normal versus canyon assemblages
extraordinarius Biozone was first established as a local biostratigraphic unit within this area (Koren' & Sobolevskaya 1977, 1979), and the type locality of the zonal species is located on the Ina River (Sobolevskaya 1976).
The regional stratotype section and point for the base of the Hirnantian Stage (the uppermost Ordovician) at Mirny Creek, Omulev Mountains, Northeast Russia/Ulem-Ordoviitsiumi Hirnantia lademe alumise piiri regionaalne stratotuup ja tase Mirnoi oja aares Omulevi maestikus Kirde-Venemaal
proteus Zone and conodonts from the underlying Paltodus deltifer Zone and even from older biostratigraphic units. Such a mixture of conodonts in the lowermost samples of the Zebre Formation is characteristic of SE Estonia and can be explained by erosion and redeposition of sediments.
Lower and Middle Ordovician conodonts from the subsurface of SE Estonia and adjacent Russia/Alam- ja Kesk-Ordoviitsiumi konodondid Kagu-Eesti puuraukudes

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