Resumen de Rejuvenation of Silurian Chitinozoans from Florida
Fritz H. Cramer, M.ª del Carmen R. Díez
Well preserved chitinozoans occur in great abundance in Ordovician and Silurian subsurface material of North-central Florida. In this paper three kinds of morphological characteristics of Wenlockian specimens are discussed: (1) the role of the prosome in rejuvenation; (2) the rejuvenation of ancyrochitinid chitinozoans; and (3) the rejuvenation of desmochitinid chitinozoans. It is concluded that, at least in ancyrochitinid chitinozoans, the morphologic changes of the prosome are probably unrelated to the process of rejuvenation. However, as reported previously and confirmed here, in desmochitinid chitinozoans the prosome seems to control the rejuvenation or division of the units. In desmochitinids apparently every unit, and not only the first one, retained the capacity of undergoing rejuvenation.
