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GEOREF RECORD

Late Devonian and Early Mississippian echinoderms from central and northern Iran

Gary D. Webster, Christopher G. Maples and Mehdi Yazdi
Late Devonian and Early Mississippian echinoderms from central and northern Iran
Journal of Paleontology (September 2007) 81 (5): 1101-1113

Abstract

New Devonian (Frasnian and Famennian) crinoids are described from central and eastern Iran and a new Mississippian (late Tournaisian) echinoderm fauna is described from the south flank of the Alborz Mountains of northern Iran. Both the Devonian and Mississippian echinoderms were living in a carbonate shelf basin on the northern flank of Gondwana at approximately 30 degrees south latitude. The geographic ranges of Hexacrinites and Eutaxocrinus are extended onto the northern margin of Gondwana and add to the sparsely known Famennian crinoids. The Mississippian fauna is dominated numerically and in diversity by cladids, unlike most late Tournaisian faunas that are dominated by camerates in numbers, if not diversity. The late Tournaisian fauna is most similar to a coeval fauna from southern Iran, both of which have a noted lack of actinocrinitids and rare platycrinitids. It also shows similarity with Tournaisian faunas of western North America with four common genera. New species introduced are: Hexacrinites persiaensis, Eutaxocrinus risehensis, Dichocrinus damghanensis, Amabilicrinus stellatus, Bridgerocrinus alborzensis, Bridgerocrinus semnanensis, Paracosmetocrinus mobarakensis, Decadocrinus clypeus, and Palaechinus iranensis.


ISSN: 0022-3360
EISSN: 1937-2337
Coden: JPALAZ
Serial Title: Journal of Paleontology
Serial Volume: 81
Serial Issue: 5
Title: Late Devonian and Early Mississippian echinoderms from central and northern Iran
Affiliation: Washington State University, Department of Geology, Pullman, WA, United States
Pages: 1101-1113
Published: 20070901
Text Language: English
Publisher: Paleontological Society, Lawrence, KS, United States
References: 93
Accession Number: 2007-111400
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch map
N33°00'00" - N37°00'00", E52°00'00" - E57°00'00"
Secondary Affiliation: Desert Research Institute, USA, United StatesUniversity of Isfahan, IRN, Iran
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, The Paleontological Society. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200746
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