AMPHIBIANS FROM THE MIDDLE JURASSIC BALABANSAI SVITA IN THE FERGANA DEPRESSION, KYRGYZSTAN (CENTRAL ASIA)

doi:10.1111/j.1475-4983.2007.00748.x

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Wiley InterScience

Palaeontology

Volume 51 Issue 2, Pages 471 - 485

Published Online: 25 Jan 2008

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AMPHIBIANS FROM THE MIDDLE JURASSIC BALABANSAI SVITA IN THE FERGANA DEPRESSION, KYRGYZSTAN (CENTRAL ASIA)

ALEXANDER O. AVERIANOV*, THOMAS MARTIN†, PAVEL P. SKUTSCHAS‡, ANTON S. REZVYI§ and AIZEK A. BAKIROV¶

*Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St. Petersburg 199034, Russia; e-mail: lepus@zin.ru
†Steinmann-Institut für Geologie, Mineralogie und Paläontologie, Universität Bonn, Nussallee 8, 53115 Bonn, Germany; e-mail: tmartin@uni-bonn.de
‡Department of Vertebrate Zoology, Biological Faculty, St Petersburg University, Universitetskaya nab. 7/9, St Petersburg 199034, Russia; e-mail: skutchas@mail.ru
§Laboratory of Palaeontology, Institute of the Earth's Crust, Geological Faculty, St Petersburg University, 16 Liniya VO 29, St Petersburg 199178, Russia; e-mail: Anton@isav.usr.pu.ru
¶M. M. Adyshev Institute of Geology, National Academy of Sciences of the Kyrgyz Republic, Erkindik 30, Bishkek 720481, Kyrgyzstan; e-mail: aizek_bakirov@mail.ru

KEYWORDS

Balabansai Svita • Caudata • Ferganobatrachus • Fergana Depression • Karauridae • Kokartus • Temnospondyli

ABSTRACT

Abstract: Larval and metamorphosed Ferganobatrachus riabinini (Temnospondyli, Brachyopoidea), metamorphosed Kokartus honorarius (Caudata, Karauridae), an indeterminated karaurid (Karauridae indet.) and, presumably, anurans (?Anura indet.) are represented by isolated cranial and postcranial skeletal elements in the Middle Jurassic (Bathonian–Callovian) Balabansai Svita of the Fergana Depression, Kyrgyzstan. The Balabansai vertebrate assemblage is one of the few faunas in which non-lissamphibian temnospondyls, stem caudates and anurans occur together. The presence of a supraglenoid foramen and a complex strap-like glenoid on the scapulocoracoid in Kokartus supports its basal phylogenetic position within the Caudata.

Typescript received 5 May 2006; accepted in revised form 4 April 2007

DIGITAL OBJECT IDENTIFIER (DOI)

10.1111/j.1475-4983.2007.00748.x About DOI