Here the units are sorted by the number of
genera that have been reported as being represented in their respective fossil yields. Since the creation or synonymy of genera can be subjective, the sorting of the units can only roughly approximate their known paleobiodiversities. Named genera of birds are included in biodiversity estimates.
> 20 10 - 19 5-10 < 5 Indeterminate This list includes stratigraphic units that have produced dinosaur remains, although none of these remains have been referred to a specific genus. == See also ==