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Trace Fossils and Depositional Environment of Four Clastic Units, Upper Pennsylvanian Megacyclothems, Northeast Kansas

George D. StanleyJames L. LambRoyal H. MapesWilliam G. Hakes

出版	University of Kansas Paleontological Institute, 1976
URL	http://books.google.com.hk/books?id=c-pPAQAAMAAJ&hl=&source=gbs_api

註釋

The toxonomic importance and paleobiologic significance of such morphological features as phragmocone cross section, sutural configuration, apical angle, ornament, protoconch morphology, cameral deposits, septal necks, siphuncle position, wrinkle-layer (runzelschict), cameral ratio, septal orientation, color patterns, and abnormal or pathologic specimens are discussed.