minor tweaks in preceding: collections listed in alphabetical order by country when they have the same age; numerical age range printed in addition to age terms; first appearance is the smallest hierarchical unit with the oldest base instead of the largest
minor tweaks in preceding: collections listed in alphabetical order by country when they have the same age; numerical age range printed in addition to age terms; first appearance is the smallest hierarchical unit with the oldest base instead of the largest


paleobiodb/pbdb-new,paleobiodb/pbdb-new,paleobiodb/pbdb-new,paleobiodb/pbdb-new,paleobiodb/pbdb-new