This dataset contains detection limits for chemical data from fossil chaetognath spines (Phakelodus) and conodonts (Cordylodus, Palmatolepis, Neospathodus) measured using an electron microprobe.
The early (~1650 – 540 mya) history of eukaryotes was punctuated by several major – but enigmatic – environmental perturbations that potentially influenced the evolution of the Proterozoic biosphere,
Sediment depth is given in mbsf. Abundances: V = very abundant (10-100 specimens/field), A = abundant (1-10 specemens/field), C = common (1 specimen/2-10 fields), F = few (1...
This dataset contains raw coccolith size data and calculated parameters (Coccolith volume index and Aspect ratio) of the genus Helicosphaera at DSDP Site 525 during the past 15...
