Plant Family Tree Diagram by Jessica Theodor ISM Assistant Curator, Geology
The Mazon Creek flora is incredibly diverse. Over 400 species from
at least 130 genera have been identified from Mazon Creek nodules.
However, the number of different kinds of plants represented is
very difficult to determine. There are at least two reasons for
this difficulty. The first reason is the convention among
paleobotanists that separate plant parts receive different names.
This procedure tends to inflate the number of plant names. The
second reason is that paleobotanists are still trying to determine
which taxa are valid.
The fossil plants discussed here are divided into four groups: