FIGURE 18. Proportions of stenothecids with damage from the early Cambrian Parara Limestone of Australia (including Anabarella australis and Stenotheca drepanoida) and from two different beds of the middle Cambrian Gowers Formation of Australia (including Mellopegma georginense and Mellopegma schizocheras). Bed 2 is stratigraphically above bed 1.