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Eksploracja głębin Morza Karaibskiego w rejonie wyspy Roatán (Honduras) przez polskich paleontologów : teraźniejszość kluczem do poznania przeszłości

Gorzelak Przemysław, Salamon Mariusz A.

Przegląd Geologiczny

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2023

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Vol. 71, nr 2

71--81

EN

The island margin of Isla de Roatán is a unique place of outstanding scientific and didactic values, with one of the longestcoral reef and an astonishing fauna inhabiting the deep sea zones. The unique geomorphological conditions enable to perform shore-based submersible operations at great depths. In this paper a short report from our dive down to about 650 m is presented. Our preliminary dive was used to document a diverse faunal assemblage, which allowed for a better understanding of the fossil record.

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A regurgitalite of the Middle Triassic (Muschelkalk) from Upper Silesia (Poland)

Niedźwiedzki Robert, Surmik Dawid, Chećko Agnieszka, Salamon Mariusz A.

Geology, Geophysics and Environment

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2021

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Vol. 47, no. 1

33--40

EN

A bromalite from the Middle Triassic (Muschelkalk) of southern Poland, Sadowa Góra Quarry, is herein described and interpreted as a regurgitalite. The fossils occurring within the regurgitalite are angular and have sharp edges. They are represented by common fragments of thin-shelled bivalves as well as rare crinoid and gastropod remains. The composition of the collected inclusion is different from that of the host rock. There are many candidates that could have produced the regurgitalite, including durophagous sharks, marine reptiles, the actinopterygian Colobodus, or nautiloids. Our finding adds to the emerging evidence of durophagous predation in the Triassic sea of Polish part of the Germanic Basin. It is the second record of a regurgitalite from the Muschelkalk of Upper Silesia.

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Ophiuroids from the Middle Triassic (Muschelkalk) of Sadowa Góra, Jaworzno (southern Poland)

Surmik Dawid, Salamon Mariusz A., Chećko Agnieszka, Kędroń Karolina

Geology, Geophysics and Environment

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2020

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Vol. 46, no. 2

175--182

EN

Ophiuroids belonging to Aspiduriella sp., Aspiduriella similis (Eck), and Arenorbis sp. are described from the Middle Triassic (Muschelkalk) strata of the Sadowa Góra Quarry (Jaworzno) in southern Poland. This is the only Polish location where three taxa of these ophiuroids have been found in one stratigraphic horizon (1st Wellenkalk). To date, only single taxa have been found in the Triassic sections of the eastern part of the Germanic Basin. Finally, other ophiuroid mass aggregations also known from Poland are presented.