Geological Range: Last occurrence (top): within Paleogene Period (23.03-66.04Ma, top in Chattian stage). Data source: Lazarus et al. 2015 - "P age group" First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Lazarus et al. 2015 - "P age group"
Plot of occurrence data:
Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested.
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Renz, G. W. (1984). Cenozoic radiolarians from the Barbados Ridge, Lesser Antilles subduction complex, Deep Sea Drilling Project Leg 78A. Initial Reports of the Deep Sea Drilling Project. 78A: 447-462. gs
Lychnocanoma bajunensis compiled by the radiolaria@mikrotax project teamviewed: 22-7-2026