The Early Cretaceous represents a pivotal interval in Earth’s history, where marine palaeobiology and biostratigraphy converge to elucidate the evolution of marine ecosystems and their response to ...
Biostratigraphically significant finds of two important species of Nemagraptus in the Middle and Upper Ordovician carbonate sections of Baltoscandia are reviewed. Nemagraptus subtilis is found in the ...
The increasing acceptance of the concept of a species varying in time, comparable to the geographic variation of species, alters the entire nomenclatural basis of biostratigraphy. Biostratigraphers ...
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