Rejuvenation of Silurian Chitinozoans from Florida

• Fritz H. Cramer ^[1] ; Mª del Carmen R. Díez de Cramer ^[1]
  1. [1] Florida State University

     Florida State University

     Estados Unidos

     
• Localización: Revista española de micropaleontología, ISSN 0556-655X, Vol. 2, Nº. 1, 1970, págs. 45-54
• Idioma: inglés
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• Resumen

  • 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.