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First record of the puzosiine ammonite genus Pachydesmoceras from the Middle and Upper Turonian of Poland
Authors:Adrian Kin  Robert Nied?wiedzki
Affiliation:a Institute of Geological Sciences, Jagiellonian University, Oleandry 2a, PL-30-063 Kraków, Poland
b Society of Friends of Earth Sciences ‘Phacops’, ul. Targowa 29, PL-90-550 ?ód?, Poland
c Institute of Geological Sciences, Wroc?aw University, pl. M. Borna 9, PL-50-205 Wroc?aw, Poland
Abstract:Two gigantic individuals of the puzosiine ammonite genus Pachydesmoceras, from uppermost Middle and lower Upper Turonian strata in central and southwest Poland, are described and illustrated as the first examples of this genus to be recorded from Poland. Specific identification is problematic because of internal mould preservation and deformation to various extent; in addition, comparative material from other European localities is lacking. Representatives of Pachydesmoceras are typical of the Tethyan Realm; records from the European and Northwest Pacific provinces in the Boreal Realm are few. Both Polish specimens are referred to as P. cf. pachydiscoide Matsumoto.
Keywords:Ammonites   Pachydesmoceras   Morphological variation   Turonian   Poland
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