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Ultrastructure in cuticle from Hoploparia stokesi (Decapoda: Nephropidae) from the Lopez de Bertodano Formation (Late Cretaceous–Paleocene) of Seymour Island, Antarctica

Published online by Cambridge University Press:  14 July 2015

Rodney M. Feldmann  and
Dale Tshudy
Rodney M. Feldmann
Affiliation:
Department of Geology, Kent State University, Kent, Ohio 44242
Dale Tshudy
Affiliation:
Department of Geology, Kent State University, Kent, Ohio 44242
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Abstract

Examination, utilizing scanning electron microscopy, of 58 specimens of Hoploparia stokesi (Weller) from the Maastrichtian portion of the Lopez de Bertodano Formation, Seymour Island, Antarctica, leads to the conclusion that cuticular ultrastructure may be used to distinguish molted from deceased remains of nephropid lobsters. Molted cuticle is characterized by deterioration, or loss, of lamination in the inner endocuticle whereas cuticle, during the intermolt phase, exhibits lamination throughout the endocuticle as well as the exocuticle. Diagenetic effects may obscure lamination throughout the cuticle. These observations confirm that Salter's position is typical of molted remains in fossils. Furthermore, partial remains of H. stokesi generally are molts. Preservational quality of molted remains tends to be better than that of corpses.

Type
Research Article
Information
Journal of Paleontology , Volume 61 , Issue 6 , November 1987 , pp. 1194 - 1203
Copyright
Copyright © The Paleontological Society 

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