Badenian Ostracoda from the Pokupsko area (Banovina, Croatia)

Abstract

Abstract:In this paper we present the results of the investigations on the Badenian (Middle Miocene) ostracods from the Pokupsko area. For the first time the presence of Badenian aged sediments in Croatia can be supported by the occurrence of ostracod biozonal markers. Four Badenian ostracod zones are established: Lower Badenian Biozone NO7 Acanthocythereis hystrix-Bythocypris lucida, Middle Badenian Biozone NO8 Eocytheropteron inflatum-Olimfalunia spinulosa, and the two Upper Badenian Biozones NO9 Neomonoceratina laskarevi-Miocyprideis sarmatica elongata and NO10 Carinocythereis carinata-Phlyctenophora farkasi. On the basis of the generally accepted paleoecology of selected genera, we identified the following ostracod faunas: shallow-water marine, shallow-water brackish-marine, shallow-water reef, and deep-water marine. The paleontological and trace element analyses suggest that the Pokupsko ostracod fauna lived in shallow (50 m deep), warm, and limpid waters, connected to a deeper sea and occasionally exposed to freshwater inflows.

Early Miocene marine ostracodes from southwestern India: implications for their biogeography and the closure of the Tethyan Seaway

“…Abundant genera in the sample CK-09-02 include Pokornyella , Loxoconcha , Tenedocythere , and Aurila . All of these genera are known to be indicative of shallow (upper shelf or neritic), fully marine, and warm water environments (Bonaduce et al, 1984; Whatley and Jones, 1999; Zorn, 2003; Whatley et al, 2004; Szczechura, 2006; Titterton and Whatley, 2008; Hajek-Tadesse and Prtoljan, 2011; Seko et al, 2012). Krithe is the only typical deep-sea genus from this sample (Zhou and Ikeya, 1992; Coles et al, 1994; Zhao and Whatley, 1997; Rodriguez-Lazaro and Cronin, 1999; Huang et al, 2018).…”

“…Phlyctenophora is widely known from Tethyan Paleogene (see Yasuhara et al, 2018) and Paratethyan Miocene (Aiello and Szczechura, 2004; Gross and Piller, 2006). Flexus is widely known from the Oligocene–Miocene of Europe (Moore, 1961; Weiss, 1983; Ducasse and Cahuzac, 1997 Gross and Piller, 2006; Szczechura, 2006; Faranda et al, 2008; Hajek-Tadesse and Prtoljan, 2011; Seko et al, 2012) and from the Eocene–Miocene of Arabia (Al-Furaih, 1980; Aziz and Al-Shumam, 2013). Paijenborchellina is also a Tethyan genus, known from the Cretaceous to Recent circum-Mediterranean region, including Africa, Russia, Arabia, and West Asia (Szczechura, 1980; Brouwers and Fatmi, 1992a, b [as Paijenborchella ]; Bassiouni and Luger, 1996; Bhandari, 1996; Hawramy and Khalaf, 2013; Yasuhara et al, 2018).…”

“…Tenedocythere is well known from the middle–late Miocene of Europe (Bonaduce et al, 1984; Gross and Piller, 2006; Szczechura, 2006; Hajek-Tadesse and Prtoljan, 2011), but older (Eocene–early Miocene) records are known only from the Central Pacific (Holden, 1976) and the Eastern Tethys of Africa and India (Ahmad et al, 1991; Bhandari et al, 2001). Quadracythere subquadra Siddiqui, 1971 sensu Ahmad et al (1991) (note that, in our opinion, Ahmad's specimens are not conspecific or congeneric to Quadracythere subquadra ) and Quadracythere vanga Ahmad et al, 1991 are Tenedocythere , in our opinion, and are from Oligocene of Africa, the oldest records of the genus (Ahmad et al, 1991).…”

Shallow-water benthic foraminiferal assemblages and their response to the palaeoenvironmental changes — example from the Middle Miocene of Medvednica Mt. (Croatia, Central Paratethys)

“…Whole carapaces were calculated as two valves (Danielopol et al 2002). Ostracoda were determined according to Brestenská & Jiříček (1978), Gross (2006) and Hajek-Tadesse & Prtoljan (2011 …”

“…Age is presumed on the basis of benthic foraminifera Pappina neudorfensis (Toula), Bulimina insignis Luczkowska and Uvigerina belli costata Luczkowska (indicative for the Late Badenian) and Bulimina gutsulica Livental and Uvigerina brunnensis Karrer (Middle to Late Badenian), (Cicha et al 1998). Additional proofs are the presence of marine ostracod Carino cythereis carinata (Roemer), typically present in the Late Badenian of the Paratethys and the Badenian ostracod taxa Cnestocythere lamellicostata Triebel, Aurila haueri (Reuss) and Loxoconcha punctanella (Reuss) (Brestenská & Jiříček 1978;Nascimento & Riha 1996;Hajek-Tadesse & Prtoljan 2011).…”