Taxonomic discussion: Incertae sedis is being used here for genera which were not assigned to families in the databases we compiled content from. This may just be a data compilation problem. I you know a documented assignment for any of the genera places use the comments area at the bottom of the relevant page to let us know. [JRY 2020]
Catalog entries:
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Description
Biogeography and Palaeobiology
Biostratigraphic distribution
Geological Range: Last occurrence (top): at top of Paleogene Period (100% up, 23Ma, in Aquitanian stage). Data source: Total of ranges of the species in this database First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Total of ranges of species in this database
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