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The first Jurassic thecideide brachiopods from the Middle East : A new species of Moorellina from the Upper Callovian of Hamakhtesh Hagadol, southern Israel

Krawczyński C., Wilson M.

Acta Geologica Polonica

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2011

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Vol. 61, no. 1

71-77

EN

The Matmor Formation is a set of late Callovian marls and limestones exposed in the Matmor Hills, Hamakhtesh Hagadol, southern Israel. It was deposited during a regional transgression which produced patch reefs across a shallow carbonate platform in this area. The thecideide brachiopods described here were part of a diverse sclerozoan community which encrusted the calcareous surfaces of sponges and corals. These brachiopods represent a new, very small species of Moorellina and the only thecideide brachiopod found in the Jurassic deposits of the Middle East. A gall-like structure interpreted as the trace of the parasitic (ascothoracid?) infestation has been recorded in one specimen of Moorellina negevensis sp. nov.

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Zawiłe ścieżki badań nad kręgowcami dewońskimi w Polsce

Szrek P., Dec M., Jaszczuk A., Krawczyński C., Nast D., Niedźwiedzki G.

Przegląd Geologiczny

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2010

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Vol. 58, nr 6

495-498

EN

We all represent a great group of vertebrates, Tetrapoda. Nowadays this is diversified and large taxon which includes eg. dogs, elephants, frogs as well as snakes, sparrows and dolphins. All of them (and us) have a common ancestor which lived in area of the present-day Holy Cross Mountains over 395 myr ago, that is in the Middle Devonian times (Niedźwiedzki et al., 2010). In this paper we recall our great scientists who made first steps in this field and opened the way for the next discoveries. We also present a brief history of Polish vertebrate paleontology. Last years of XIX and the beginning of XX century gave us many classical papers written by great geologists such as Georg Gürich and Jan Czarnocki. They created a general framework for the recent knowledge about the Devonian of the Holy Cross Mountains and collected many important specimens subsequently investigated by paleontologists - Zinaida Gorizdro-Kulczycka, Julian Kulczycki, Michał Ginter and authors of this paper. One of those paleontologists - Julian Kulczycki - created a scientific basis for Polish centre of studies on Paleozoic vertebrates. Because of reasons independent of him, Kulczycki could not achieve this goal. Inspired by Kulczycki’s work as well as our discovery of footprints of first tetrapods and other new finds we decided to form a working group of young scientists to carry out further investigations. The studies are to be conducted in the Holy Cross Mountains Paleontological Laboratory which is being organized in the Kielce branch of the Polish Geological Institute - National Research Institute and in close cooperation with several national and foreign research centers.

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The Upper Oxfordian (Jurassic) thecideide brachiopods from the Kujawy area, Poland

Krawczyński C.

Acta Geologica Polonica

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2008

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Vol. 58, no. 4

395-406

EN

Thecideide brachiopods from the slope facies of a sponge-cyanobacterial bioherm exposed in the Wapienno and Bielawy quarries (Kujawy, Poland) are described. Numerous specimens were found in the upper part of the section, in the Hauffianum-Planula Subzones of the Oxfordian, and constitute the first record of these brachiopods from the Jurassic deposits in the area. Two species: Rioultina wapiennensis sp.nov. and Neothecidella ulmensis QUENSTEDT, 1858, are described, the first being the only representative of the genus Rioultina found in Poland. Excellent preservation of some specimens enabled recognition of details of their internal morphology usually inaccessible in fossil material, including features associated with reproduction and the development of the brachidium. Study of relatively large numbers of thecideides still cemented to the substrate, together with analysis of the associated fauna, allowed the reconstruction of aspects of their ecology.

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Przedstawiciele rodzaju Craniscus Dali, 1871 z górnego oksfordu Bielaw i Wapienna na Kujawach

Krawczyński C.

Volumina Jurassica

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2005

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Vol. 3, no. 1

75--85

EN

The presented paper contains a detailed description of four species of the genus Craniscus DalI, 1871, found in the Upper Oxfordian of Bielawy and Wapienno quarries, Kujawy area. Three of them: Craniscus bipartitus (Munster, 1837), Craniscus antiquior (Jelly, 1843) and Craniscus corallinus (Quenstedt, 1852) have already been described from Poland, the fourth, however - Craniscus tripartitus (Munster, 1840), had only been known from the Lower Oxfordian of North Bavaria. The Craniscus specimens come from slope deposits of sponge-microbialitic bioherm. This is indicated by the fact that almost all specimens are dorsal valves, separated posthumously from ventral valves. The condition of some specimens and the rock lithology suggests, that the deposition was very violent in some cases and brachiopods were buried alive. The studied material is relatively well-preserved, which alIowes an accurate reading of the location of muscle scal's.