Also found in: Dictionary, Wikipedia.


A part of paleontology concerned with the study of the conditions and deposition order of sedimentary rocks.



a branch of stratigraphy which studies the distribution of fossil remains of organisms in sedimentary deposits with the object of determining the relative age and the correlations between layers of the same age in different territories. The task of biostratigraphy is the elaboration of scales of the relative age of layers (in various degrees of detail and of various scopes, but in zonal layers in particular). The succession of biostratigraphic zones reflects the change in geological cross section of fossil remains from a group of extinct organisms of different taxonomic classes or their systems. Of special importance in the differentiation of zones, and above all of biozones, are groups of extinct organisms that had relatively short life-spans but that attained widespread distribution, significant abundance, and variety (for example, nummulites, graptolites, and dinosaurs). Zones are frequently based on stages in the evolution of certain rapidly changing groups of extinct organisms (for example, corals of the subclass Rugosa). The study of the remains of ancient microscopic organisms (micropaleontology), the quantity of which can be extremely large even in small specimens (for example, from deep chinks), is important for the goals of biostratigraphy. Remnants of planktonic organisms (foraminifers, algae, and others) that were carried for great distances by currents allow zones of great territorial expanse to be distinguished. Fossil remains of plant spores and pollen, which were carried for great distances by the wind, are important for correlating deposits of maritime or continental origin that are of the same age. Biostratigraphy makes broad use of the methods of paleoecology for reconstructing the conditions under which ancient organisms existed in order to distinguish complexes of organisms of the same age living in different conditions from complexes of organism of different ages living in similar conditions.


Menner, V. V. “Biostratigraficheskie osnovy sopostavleniia morskikh, lagunnykh i kontinental’nykh svit.” Tr. geologicheskogo instituta AN SSSR, 1962, issue 65.
Stratigraficheskaia klassifikalsiia, terminologiia i nomenklatura. Leningrad, 1965.
Stepanov, D. L. Printsipy i metody biostratigraficheskikh issledovanii. Leningrad, 1958.


References in periodicals archive ?
This paper aims to (a) document planktonic foraminiferal fauna of the Parh Limestone from the outcrops exposed in Hanna Lake and Murree Brewery sections, (b) establish high resolution biostratigraphy on the basis of obtained assemblages, (c) compare recovered planktonic foraminiferal assemblages with previous studies conducted on the Parh Limestone and elsewhere in other parts of Tethys and (d) to assign depositional environments to Parh Limestone based on field and microfacies analysis.
Conodont biostratigraphy of the "Ockerkalk" (Silurian) from Southeastern Sardinia.
Sivaceros gradiens Pilgrim 1937 (Mammalia, Bovidae, Boselaphini) from the Lower Siwaliks of Dhok Bun Amir Khatoon, Chakwal, Pakistan: Systematics and Biostratigraphy. Turk.
Foraminifera Biostratigraphy. The benthic foraminiferal assemblage obtained from the Djega outcrop and presented herein (Plate 1) have been recognized to undoubtedly belong to two assemblage zones of Petters [21], the Late Cretaceous (Campano-Maastrichtian) Bolivina afra-Haplophragmoides talokensis zone and the Early Paleocene (Danian) Anomalinoides umboniferus-Eponides pseudoelevatus zone.
Lower Tertiary Planktonic biostratigraphy of the Salt Range, Northern Pakistan.
In the last decade, the profusion of new discoveries and the advances in magnetostratigraphy and biostratigraphy in the southern Pyrenees (Lopez-Martinez et al., 2001; Oms et al., 2007; Pereda-Suberbiola et al., 2009; Riera et al., 2009; Prieto-Marquez et al., 2013; Vila et al., 2012, 2013) have allowed a more precise and robust correlation for these localities.
The previous studies have focused on biostratigraphy and lithostratigraphy of the Asmari Formation and was originally defined in primary works by [18,54,64,63].
Ichron provides geological and training services to the oil and gas sector, specialising mainly in reservoir geology, biostratigraphy and chemical stratigraphy.
"Fossil Mammals of Asia: Neogene Biostratigraphy and Chronology" by the team of Xiamong Wang (Curator of Vertebrate Paleontology, Natural History Museum of Los Angeles County), Lawrence J.
Due a lack of macroscopic and microscopic fossils, especially Foraminifera, some uncertainties in conodonts' biostratigraphy have not been studied and clarified.