In dating these events, detailed correlation and detailed biostratigraphy is essential. |
A Pliocene age for the Siesta palaeosol and Nothofagus fossils has been inferred from diatom and palynological biostratigraphy. |
The San Juan Member is late Oligocene based upon biostratigraphy and radiometric dating. |
Strong uniformity in Permian ammonoid biostratigraphy and provincialism between Xinjiang and Pamir is suggested. |
In marine sediments marine phytoplankton are widely used in biostratigraphy. |
The marine biostratigraphy is based upon microfaunas and floras, notably planktonic foraminifera and radiolaria. |