ABSTRACT

The most thorough and extensive treatment of marine invertebrate functional morphology using the fossil record is still Dacqué’s work (1921), followed by that of Savazzi (1999a), in which a number of very helpful items were collected for various invertebrate groups, most with a good fossil record. Hess et al. (1999) assembled a wealth of functional information regarding crinoids, and Dollo (1910) earlier provided an excellent account of some functional morphological criteria for assessing behavior in certain shes, trilobites, and eurypterids.