The first report of chitinozoans from the Letna Formation (Upper Ordovician, Prague Basin, Czech Republic) and their biostratigraphical
After preparing samples and making thin sections, lithostratigraphical and biostratigraphical
studies were precisely performed.
correlations of Early Devonian vertebrate assemblages of the Old Red Sandstone Continent.
This is based on biostratigraphical
research done jointly by BP and the Geology Institute of Azerbaijan.
Human impact in the Lake Malaren region, south-central Sweden during the Viking Age (AD 750-1050): a survey of biostratigraphical
evidence, in U.
Core continues to expand its Deepwater Santos Basin and Pre-Salt Brazil projects, which provide detailed investigations of the sedimentological, petrographical, biostratigraphical
, geochemical, and petrophysical properties of the reservoirs and source horizons, integrated with an evaluation of associated seal-rock lithologies and correlated with local deep-seated basement tectonic structures.
Precise time-correlation in the Ordovician can be achieved by biostratigraphical
methods, particularly using graptolite, conodont and chitinozoan distribution (biozones).
This gap in the bentonite record was probably caused by a break in sedimentation near the Llandovery--Wenlock boundary, which was also proposed on the basis of biostratigraphical
evidence (Nestor & Nestor 2002, 2003).
Because the stratigraphic position of the type Middendorf Locality is uncertain, we attempted to extract palynomorphs for biostratigraphical
analysis; however, none were recovered.
This is based on a biostratigraphical
research work done jointly by the Geology Institute of Azerbaijan and British Petroleum.
Still, in addition to knowledge-based distrust, there remain discrepancies between biostratigraphical
datings using fossil groups, especially when shelly faunas are considered.
The correlation problems are partly due to still insufficient biostratigraphical
data, and are mainly connected with correlations between shallow and deeper shelf successions.