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Pararotalia aculeata (d.Orbigny, 1846) ze środkowego miocenu Paratetydy Centralnej

100%

Szczechura J.

Przegląd Geologiczny

2004

tom Vol. 52, nr 1

76-79

The foraminifers belonging to the genus Pararotalia Le Calvez from the Middle Miocene of the Central Paratethys are referred to different species, eg. Pararotalia (or Rotalia) stellata (Łuczkowska, 1955; Śmigielska, 1957; Urbaniak, 1974; Szczechura, & Pisera 1986) and P. ex gr. lithothamnica (Oszczypko et al., 1992) from Poland, P. stellata from Slovakia (Holcová et al., 1996), Rotalia calcar from Hungary (Korecz-Laky & Nagy-Gellai, 1985) and Pararotalia aculeata, P. cf. aculeata as well as P. spinimargo from Romania (Popescu, 1979). It is suggested here, that all of them represent one species, ie. Pararotalia aculeata (d’Orbigny, 1846). The large infraspecific variability of this species (Pl.1, figs. 1–19), resulting in its taxonomic spliting, seems to be a consequence of ontogenetic changes, ecological modifications as well as different state of preservation. The systematic relation between P. aculeata and other so far known representatives of Pararotalia, especially those from the Neogene of theMediterranean areas, should be based on large comparative material, however P. padana Mancin, Pirini et Lanfrancini, 2000, from Pliocene of Italy, seems to be conspecific with the here discussed species.

Chitons (Mollusca: Polyplacophora) from the Middle Miocene sandy facies of Ukraine, Central Paratethys

80%

Studencka B. , Dulai A.

Acta Geologica Polonica

2010

tom Vol. 60, no. 2

257-274

The Late Badenian (=early Serravallian of the Mediterranean) chitons of Ukraine, housed in the Museum of the Earth PAS, Warsaw, are described systematically. Eight species are identified: Leptochiton cancellatus (Sowerby, 1840), Lepidopleurus cajetanus (Poli, 1791), Ischnochiton rissoi (Payraudeau, 1826), Chiton corallinus (Risso, 1826), Chiton olivaceus Spengler, 1797, Lepidochitona lepida (Reuss, 1860), Acanthochitona faluniensis (Rochebrune, 1883) and Craspedochiton profascicularis (Boettger, 1906). Most of the material comes from Varovtsi, in the Khmelnytskyi region. The predominant faunal element is Acanthochitona faluniensis, comprising 55% of all investigated valves.