A Model of Conflict: The Metonymic Function of stasis in Xenophon's "Hellenica".

Overview

Microconchids were a group of small encrusting organisms that secreted a spirorbiform shell, almost identical to that of the modern annelid Spirorbis. This study documents the occurrences of Microconchus on 226 specifies of Mucrospirifer sp. and 200 specimens of Strophodonta demissa, both of which are Middle Devonian brachiopods from the Michigan Basin. The occurrences are described in terms of microconchid shell diameter, on which brachiopod valve the microconchid occurs, the location on the valve where the ...
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Overview

Microconchids were a group of small encrusting organisms that secreted a spirorbiform shell, almost identical to that of the modern annelid Spirorbis. This study documents the occurrences of Microconchus on 226 specifies of Mucrospirifer sp. and 200 specimens of Strophodonta demissa, both of which are Middle Devonian brachiopods from the Michigan Basin. The occurrences are described in terms of microconchid shell diameter, on which brachiopod valve the microconchid occurs, the location on the valve where the microconchid occurs, where the microconchid lies in relation to brachiopod shell ornamentation or microtopography, and the direction in which the microconchid shell aperture opens. This study concludes that (1) in the samples studies, strophodontids are encrusted by Microconchus more often than spiriferids, (2) the average Microconchus size was similar between S. demissa and Mucrospirifer sp., (3) strophodontids occurring in the Potter Farm Member have more microconchids than other literature reports, (4) a greater number of microconchids settled on either side of the center of the brachiopod valve than settled on the center of the valve or along the commissure, (5) microtopographically, microconchids prefer the grooves of the costae over all other regions, (6) the gathered data support the previously published life position of Mucrospirifer sp. (resting on the hinge) and Lescinsky's (1995) published life position of S. demissa (convex valve up).
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Product Details

  • ISBN-13: 9781243441102
  • Publisher: BiblioLabsII
  • Publication date: 9/2/2011
  • Pages: 284
  • Product dimensions: 7.44 (w) x 9.69 (h) x 0.60 (d)

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