The Ecology of the Cambrian Radiation - Andrey Zhuravlev - Chapter 11
The Ecology of the Cambrian Radiation - Andrey Zhuravlev - Chapter 11
CHAPTER ELEVEN Evolution of the Hardground Community Hardground communities first appeared in the late Middle Cambrian but they were not common before the Ordovician. Two factors had a major influence on the early development of hardgrounds and resulted in abrupt and rapid increase in hardground area.