A Jurassic (Bathonian-Callovian) Daghanirhynchia brachiopod fauna from Jordan

Authors

  • H.R. FELDMAN American Museum of Natural History, Division of Paleontology (Invertebrates). New York, NY 10024, USA. Lander College for Women, the Anna Ruth and Mark Hasten School, a Division of Touro College. New York, NY 10023, USA
  • M. SCHEMM-GREGORY Centro de Geociências da Universidade de CoimbraLargo Marquês de Pombal, 3000-272 Coimbra, Portugal (*Deceased) Museu Geológico, Laboratório Nacional de Energia e Geologia (LNEG). Rua Academia das Ciências, 19, 1200-003 Lisboa, Portugal
  • F. AHMAD Faculty of Natural Resources and Environment, Department of Earth and Environmental Sciences, The Hashemite University. P.O. Box 150459, 13115 Zarqa, Jordan.
  • M.A. WILSON Department of Geology, The College of Wooster 944 College Mall, Wooster, OH 44691, USA.

Keywords:

Brachiopoda, Systematics, Wadi Zarqa, Ethiopian Province, Middle Jurassic

Abstract

A Jurassic (Bathonian-Callovian) brachiopod fauna from Jordan consists of seven rhynchonellid species all belonging to the genus Daghanirhynchia of which two are new: Daghanirhynchia rawyaensis and D. jordanica. Emended diagnoses are given for Daghanirhynchia daghaniensis and D. macfadyeni. Additional taxa described include Daghanirhynchia angulocostata, D. susanae and D. triangulata. Three dimensional reconstructions illustrate the internal morphology of the articulated shells for the first time in this genus. The material studied herein was collected from Wadi Zarqa in northwestern Jordan, almost due north of the Dead Sea, and to the east of the Rift Valley. Most species seem to be geographically restricted within the Jurassic Ethiopian Province, however specimens from Somalia and Ethiopia are larger in size than in other parts of the Province and shell size increases in stratigraphically younger specimens. The occurrence of Daghanirhynchia in India is the only appearance of the genus outside the Ethiopian Province.

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Vol. 12 No. 1 (2014)

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