Two new species of canaliculate rudists (Dictyoptychidae) from southeastern turkey


Ozer S.

GEOBIOS, vol.38, no.2, pp.235-245, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 2
  • Publication Date: 2005
  • Doi Number: 10.1016/j.geobios.2003.11.004
  • Journal Name: GEOBIOS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.235-245
  • Dokuz Eylül University Affiliated: No

Abstract

Two new species of carialiculate rudist genus Dictyoptychus Douville: Dictyoptychus quadrizonalis n. sp. and Dictyoptychus vanensis n. sp., are described from the Maastrichtian limestone block of the ophiolitic unit of the Gevas-Van area, southeastern Turkey. The new species are mainly characterized by the complex structure of the canal layer of the lower valve, and also they seem to be most primitive species of Dictyoptychus and transitional between Dictyoptychus Douville and its presumed ancestor, Eodictyoptychus Skelton and El-Asa'ad. Many specimens of the Dictyoptychus paronai (Kuhn), allows us to first determination of the upper valve shape and to study also of the lower valve canal layer. (c) 2005 Elsevier SAS. All rights reserved.