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Description of the first fossil species of Bathynectes (Brachyura, Polybiidae) in the Badenian (middle Miocene) of the Medobory Hills (Ukraine, Central Parathetys), with remarks on its habitat ecology

2011; Volume: 18; Linguagem: Inglês

10.32800/tmgb.2011.18.0037

2385-4499

Àlex Ossó, O. Stalennuy,

Marine Ecology and Invasive Species

catalaDescripcio de la primera especie fossil del genere Bathynectes (Brachyura, Polybiidae) en el Badenia (Mioce mig) dels Turons Medobory (Ucraina, Paratethys central), amb notes sobre l´ecologia del seu habitat. El descobriment d´una nova especie del genere Bathynectes Stimpson, 1871 (B. muelleri n. sp.) en els complexes d´esculls del Badenia (Mioce mig) de la pedrera de Maksymivka (Conca d´avantpais dels Carpats septentrionals), en els denominats Turons Medobory, prop de Ternopil (Ucraina), representa el primer registre fossil d´aquest genere. La majoria de les especies actuals d´aquest genere, son d´aigues profundes. Es descriu Bathynectes muelleri n. sp. i s´argumenta el possible origen del genere i els seus canvis d´habitat al llarg del temps. Tambe s´analitza l´abundor de restes de decapodes al complex d´esculls de Maksymivka i es presenta una hipotesi per explicar la seva presencia. EnglishThe discovery of a new species of the genus Bathynectes Stimpson, 1871 (B. muelleri n. sp.) in the Badenian (middle Miocene) coralgal frameworks of the Maksymivka quarry (northern Carpathian Foredeep Basin), in the so-called Medobory Hills, near Ternopil (Ukraine), represents the first recognition as fossil of this genus. All extant species of this genus are mainly living in deep water habitats. Bathynectes muelleri n. sp. is described herein with comments on both the possible origin of the genus and the habitat changes through time. The abundance of decapod remains in this coralline environment is also analysed and a hypothesis for their presence presented.