SUMMARY The detailed stratigraphic ranges of 71 species of calcareous nannoplankton have been determined from the Speeton Clay at the type locality in Yorkshire. One new species, Parhabdolithus reightonensis, is described. Comparison with other Lower Cretaceous nannofloras provides evidence for provincialism during this period.
No takes yet. Share an insight, caveat, or question.
ROSANNA J. TAYLOR (1978) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: