Cenomanian-Turonian rudist (bivalvia) lithosomes from NW of Jordan


Ozer S., Ahmad F.

JOURNAL OF AFRICAN EARTH SCIENCES, vol.107, pp.119-133, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 107
  • Publication Date: 2015
  • Doi Number: 10.1016/j.jafrearsci.2015.03.013
  • Journal Name: JOURNAL OF AFRICAN EARTH SCIENCES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.119-133
  • Keywords: Rudists, Lithosomes, Upper Cenomanian, Upper Turonian, Palaeobiogeography, Jordan, CARBONATE PLATFORM SEQUENCES, SINAI, EVOLUTION, CONFIGURATION, STRATIGRAPHY, MICROFACIES, CONIACIAN, ISRAEL, EGYPT
  • Dokuz Eylül University Affiliated: Yes

Abstract

Two rudist lithosomes characterized by high abundance but low in diversity are described from five measured-stratigraphic sections in the Upper Cretaceous Hummar and Wadi As Sir Limestone Formations in the Ajlun and Kitim areas, in NW Jordan. The caprinid lithosome from the Hummar Formation is characterized by abundant occurrences of canaliculate rudists such as Caprinula boissyi d'Orbigny, 1840, Neocaprina nanosi Plenfcar, 1961, Caprina sp. (aff. schiosensis Boehm, 1892), but rare specimens of radiolitids such as Sauvagesia sharpei (Bayle, 1857), Sauvagesia/Durania sp. and Eoradiolites sp., along with requienids (Apricardia sp.), indicating a late Cenomanian age. The hippuritid lithosome is determined from the stratigraphically higher Wadi As Sir Limestone Formation and it is represented by well-preserved specimens of Hippurites resectus Defrance, 1821 and also some specimens of Vaccinites rousseli Douville, 1894 and Durania arnaudi (Choffat, 1891) indicating a late Turonian age.