In addition to seismic, lithofacies, and well log signatures<ref name=ch17r92 /> sequence stratigraphic surfaces and systems tracts can be recognized from paleoenvironmental trends evident from several types of paleontologic analyses: | In addition to seismic, lithofacies, and well log signatures<ref name=ch17r92 /> sequence stratigraphic surfaces and systems tracts can be recognized from paleoenvironmental trends evident from several types of paleontologic analyses: |