You are to use the taxonomy indicated by your instructor. Examine the vials of unsorted microfossils. Fusulinid foraminifera 4. Microfossils are useful for biostratigraphy or correlating sedimentary rocks. Put an X in the chart for the periods in which the microfossil groups are found.
Microfossils are useful for paleoenvironmental interpretation.
Put an X in the chart for the environments in which the microfossil groups are found. In some areas of the sea floor, foraminifera shells are accumulating at a rate of 1 cm per 1000 years. Fill in the geologic periods in the ranges of the groups in each layer. In other words, find the periods in which the ranges of all of these groups overlap . The answer will be more than one geological period name.