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Ophiuroids from the Upper Jurassic of Kuyavia and the Kraków-Częstochowa Upland, Poland

Loba Michał, Radwańska Urszula

Acta Geologica Polonica

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2022

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Vol. 72, no. 4

391--412

EN

Ophiuroids from the Upper Jurassic marine deposits (upper Oxfordian-lower Kimmeridgian) of southern and north-western Poland have been studied in two sections: Zalas quarry in the Kraków-Częstochowa Upland in southern Poland and Wapienno/Bielawy quarries in the Kuyavia region of north-western Poland. Described herein are nine taxa belonging to five genera (one new to science): Alternacantha Thuy and Meyer, 2013; Dermocoma Hess, 1964; Ophiobartia Loba gen. nov.; Ophioderma Müller and Troschel, 1840; Ophiotreta Verrill, 1899, and three families: Ophiacanthidae and Ophiodermatidae (both of Ljungman, 1867), and Ophiotomidae Paterson, 1985. Only a few representatives of some of these taxa have previously been reported from the Jurassic of Poland. One species, Ophiobartia radwanskii Loba, is established as new. The ophiuroid material recognized from both Polish localities is close to those described from Western Europe at family or even genus level. Both studied ophiuroid assemblages from Zalas and Wapienno/Bielawy show similarities, being dominated by the cosmopolitan species Ophioderma spectabile Hess, 1966, and by different species of Dermocoma. The recognized ophiuroid assemblages represent a rather shallow-water environment.

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New lobsters (Decapoda, Nephropoidea) from the Cretaceous-Paleogene section of the Middle Vistula valley, east-central Poland

Fraaije R. H. B., Jagt J. W. M., Van Bakel B. W. M., Tshudy D. M.

Acta Geologica Polonica

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2018

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Vol. 68, no. 4

503--509

EN

During fieldwork in the early 1990s at the then still active quarry near Nasiłów, on the left bank of the River Vistula (Wisła), accompanied by Professor Andrzej Radwański, some lobster remains were collected. A fragmentary anterior portion of a decapod crustacean carapace, recovered from a level about 2 m below the Cretaceous–Paleogene (K/Pg) boundary, in a siliceous chalk unit locally referred to as ‘opoka’, constitutes the oldest record of the thaumastocheliform genus Dinochelus Ahyong, Chan and Bouchet, 2010, D. radwanskii sp. nov. The other, more complete, individual is from c. 3 m above the K/Pg boundary, coming from marly gaizes or ‘siwak’; this is ascribed to a new species of Hoploparia M’Coy, 1849, H. nasilowensis sp. nov., the first to be recorded from Danian (lower Paleocene) strata. Although both ‘opoka’ and ‘siwak’ facies in the Nasiłów area are very rich in diverse biota, including some brachyurans, no macruran remains had so far been recorded from the region.

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A new aspinothoracid arthrodire from the Late Devonian of Ohio, U.S.A.

Carr R. K.

Acta Geologica Polonica

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2018

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Vol. 68, no. 3

363--379

EN

The Cleveland Shale fauna represents a unique view of the time after a major Devonian extinction event (Frasnian–Famenian) with the recovery of arthrodires (Placodermi) best represented by this most specious North American fauna. This time was followed by an additional event (Hangenberg Biocrisis) leading to the extinction of arthrodires (and all other placoderms). An understanding of the diversity and interrelationships of North American arthrodires can aid our understanding of this critical time in vertebrate evolution. A new aspinothoracid arthrodire Hlavinichthys jacksoni gen. et sp. nov. is described from the Late Devonian of northern Ohio, U.S.A., which adds to our knowledge of this group. It provides a point of comparison to other members of the fauna whose interrelationships are poorly known. A phylogenetic analysis supports an assignment of Hlavinichthys jacksoni gen. et sp. nov. among the aspinothoracid arthrodires. This work has drawn attention to the continued need for descriptive and phylogenetic analyses of this unique fauna. Decades old species descriptions need revision along with preparation and description of new taxa. The work on Hlavinichthys jacksoni gen. et sp. nov. here is one step in that process.

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Detailed biostratigraphic scales as based on the palaeobiogenetical approach (an example of the Upper Bajocian – Lower Bathonian ostracod scale of the Russian Platform)

Shurupova Y. A., Tesakova E. M.

Volumina Jurassica

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2017

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Vol. 15, no 1

121--138

EN

Two new species of ostracods of the family Progonocytheridae Sylvester-Bradley Camptocythere (C.) lateres Tesakova et Shurupova, sp. nov. and C. (C.) angustius Tesakova et Shurupova, sp. nov. from the Michalskii and Besnosovi ammonite zones (Upper Bajocian – Lower Bathonian, Middle Jurassic) of the Sokur section (Saratov) are described. The changes in ontogenesis in the phylogeny of Camptocythere (C.) lateres Tesakova et Shurupova in the stratigraphical interval corresponding to the Palaeocytheridea kalandadzei ostracod Zone, and especially to the beds with C. (C.) lateres, have been studied. The levels of the change in the predominant type of sculpture (corresponding to evolutionary boundaries) are recognized in the sculpture development among the adult representatives of the species in its phylogeny. This palaeobiogenetic (heterochrony) approach allows subdivision of the beds with C. (C.) lateres into three stratigrapical intervals characterized by changes in the type of sculpture.

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Badenian (Middle Miocene) echinoids and starfish from western Ukraine, and their biogeographic and stratigraphic significance

Radwański A., Górka M., Wysocka A.

Acta Geologica Polonica

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2014

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Vol. 64, no. 2

207--247

EN

Echinoderms from the Badenian (Middle Miocene) of the Fore-Carpathian Basin of western Ukraine are facies restricted. The Mykolaiv Beds, stratigraphically older, yielded the starfish Astropecten forbesi (complete skeletons), two genera of sand dollars (Parascutella, Parmulechinus), and numerous other echinoids of the genera Psammechinus , Echinocyamus, Spatangus, Hemipatagus, Echinocardium, Clypeaster, Echinolampas, and Conolampas. The stratigraphically younger, calcareous Ternopil Beds yielded Eucidaris (complete coronae, isolated spines), Arbacina , Brissus, and Rhabdobrissus. Sixteen species of echinoids are distinguished and/or commented. A new brissid, Rhabdobrissus tarnopolensis sp. nov., is established. A mass occurrence of some species (Psammechinus dubius and Hemipatagus ocellatus) contrasts with that of mass aggregations (sand dollars and Echinocardium leopolitanum) by dynamic events in selected layers of proximal tempestites. Of special note is the occurrence of very small specimens, interpreted as juveniles (‘babies’) having been swept out of their restricted biotopes (‘nurseries’). Some species hitherto regarded as of Early Miocene age, and the problem of their persistence beyond the Fore-Carpathian Basin and/or migration into that basin during the Middle Miocene transgression are discussed.

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New for Poland tubificid (Oligochaeta) species from karstic springs

Dumnicka E.

Polish Journal of Ecology

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2009

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Vol. 57, nr 2

395-401

EN

The majority of oligochaete species living in springs are ubiquitous and widely distributed taxa but cold stenothermic, semiaquatic and rare ones are also found. In Poland about 50 species are known from springs among 185 aquatic and semi-aquatic species found in whole country. Gianius aquaedulcis (Hrabe 1960) (Tubificidae, Phallodrilinae) is reported for the first time from Poland from two karstic springs situated in Krakow - Częstochowa Upland (South Poland). Both springs are hillside, fissure, descending, rheocrenes, with discharge about 30-40 L s[^-1]. Spring no 1 is situated in banked pond, spring no 2 has natural character. Their bottom is sandy or sandy-gravely, with patches of detritus, mud and plants. The conductivity, concentration of main cations (Ca, Mg) and anions (Cl, SO[4]) were typical for spring waters of this limestone area; only concentration of nitrate is slightly elevated. The samples of bottom fauna (a polyethylene corer and a bottom scraper) and water for chemical analysis were taken seasonally. This species was more numerous in a banked spring than in the natural one (maximal density about 1600 ind. m[^-2]) and seasonal changes of its density were similar in both springs. Mature specimens formed only 5-8% of the population and were present in all sampling data. G. aquaedulcis is known from a few localities only (Germany, France, Spain and USA). It lives in underground and surface waters, with slightly alkaline pH on sandy or stony bottom. Maybe this species forms a few relictic populations which persist in subterranean (cave or hyporheic) waters of some geographic regions at least since the last glacial epoch. The existence of small anatomical differences (for example various thickness of the muscular lining of the atria and changeable shape of penial setae) among the studied populations from various countries seems to confirm this hypothesis.

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The occurence of rare in Europe and new to Poland species Aulodrilus japonicus Yamaguchi, 1953 (Oligochaeta, Tubificidae) in two fishponds

Krodkiewska M.

Polish Journal of Ecology

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2007

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Vol. 55, nr 3

615-619

EN

In two fishponds (area of 1.6 ha and 0.2 ha, depth to 1.5 m) in Silesian Upland (Southern Poland) rare in Europe species Aulodrilus japonicus Yamaguchi, 1953 was found to the first time in Polish fauna. The water bodies are slightly acid, soft (total hardness up to 96 mg CaCO[3] l[^-1]) and nutrient rich. A. japonicus occurred during the whole study period (from March to November) in both ponds. The greatest abundance (up to 120 ind.m [^-2]) was observed in the summer, however the mature specimens were never found.