Abstract
Foraminifer is a very useful microorganism to perform biostratigraphical zonation of the Upper Jurassic. Foraminiferal biozones are calibrated by the ammonite standard zones and can be used for intra- and interregional correlations. Furthermore, the fossil record of foraminiferal faunas is well known among basins of the Northern Eurasia and is also used for accurate palaeoenvironmental, palaeobiogeographical, or biofacial reconstructions. It allows identifying a complex set of biotic and abiotic events which may be used to propose a more general palaeoecoloecological and palaeoceanographical reconstruction of the Subboreal, Boreal, and Arctic seas. Then, the late Kimmeridgian Northern Eurasian seas formed a network of well-connected palaeobasins during the sea-level rise and resulted in rather similar palaeoenvironmental conditions.
Highlights
The study of the Upper Jurassic of the western part of Northern Asia and Europe dates back to the end of the 19th century
The fossil record of foraminiferal faunas is well known among basins of the Northern Eurasia and is used for accurate palaeoenvironmental, palaeobiogeographical, or biofacial reconstructions
The first generalized micropalaeontological investigation was performed by Kuznetsova [1], based on foraminiferal assemblages from different regions of western, eastern and northern Europe, as well as Siberia and Arctic Canada
Summary
The study of the Upper Jurassic of the western part of Northern Asia and Europe dates back to the end of the 19th century. The fossil record of foraminiferal faunas is well known among basins of the Northern Eurasia and is used for accurate palaeoenvironmental, palaeobiogeographical, or biofacial reconstructions. The late Kimmeridgian Northern Eurasian seas formed a network of well-connected palaeobasins during the sea-level rise and resulted in rather similar palaeoenvironmental conditions.
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