Trace fossils from the Lower Muschelkalk of Raciborowice Górne (North Sudetic Synclinorium, SW Poland) and their palaeoenvironmental interpretation

Chrząstek, Alina

doi:10.2478/agp-2013-0015

Cited by 22 publications

(21 citation statements)

References 261 publications

(410 reference statements)

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“…The low er most Wilków Mem ber and the up per most ¯erkowice Lithostratigraphic units af ter Milewicz (1985) and Leszczyñski (2010), mod i fied (with out Keuper de pos its which oc cur only in the most NW part of the NSS), tra di tional lithostratigraphic units of the Ger manic Trias sic af ter Al ber ti (1834), Beyrich (1849Beyrich ( , 1855, Noetling (1880), Scupin (1907Scupin ( , 1912Scupin ( -1913Scupin ( , 1933, Holdefleiss (1915), Beyer (1933), cor re la tion with age units af ter Lepper et al (2002), Menning et al (2012) and Chrz¹stek (2013a) Mem ber cor re spond to the Unterquader and the Oberquader re spec tively, of the tra di tional lithostratigraphy (Fig. 2).…”

Section: Geological Settingmentioning

confidence: 96%

“…In the Sudetes, Thalassinoides has been de scribed from the Car bon if er ous by Muszer and Uglik (2013), from the Mid dle Trias sic, Lower Muschelkalk (Chrz¹stek, 2013a) and from the Upper Cre ta ceous (Rotnicka, 2005;Leszczyñski, 2010;Chrz¹stek, 2013b, c;Chrz¹stek and So³czerski, 2016). Rotnicka (2005) cited this ichnogenus from the Cenomanian and Turonian of the Sto³owe Moun tains (Intra-Sudetic Synclinorium) from offshore/shelf set tings.…”

Section: Palaeoenvironmentmentioning

confidence: 99%

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Rosarichnoides sudeticus igen. et isp. nov. and associated fossils from the Coniacian of the North Sudetic Synclinorium (SW Poland)

Chrząstek

Muszer

Solecki

et al. 2018

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Section: Geological Settingmentioning

confidence: 96%

Section: Palaeoenvironmentmentioning

confidence: 99%

Rosarichnoides sudeticus igen. et isp. nov. and associated fossils from the Coniacian of the North Sudetic Synclinorium (SW Poland)

Chrząstek

Muszer

Solecki

et al. 2018

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“…Similar trace fossils are likely to be found as early as in the Triassic. Indeed, Holocrinus-bearing beds commonly yield a wide range of trace fossils (e.g., Senkowiczowa 1982;Salamon 2003;Chrząstek 2013; MAS, personal observations), including trails, which are, however, commonly interpreted as arthropod traces. However, our neoichnological data suggest that holocrinids could be a tracemaker candidate of some of the ichnofossils observed in the Muschelkalk.…”

Section: Discussionmentioning

confidence: 99%

Experimental neoichnology of crawling stalked crinoids

et al. 2018

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Stalked crinoids have long been considered sessile. In the 1980s, however, observations both in the field and of laboratory experiments proved that some of them (isocrinids) can actively relocate by crawling with their arms on the substrate, and dragging the stalk behind them. Although it has been argued that this activity may leave traces on the sediment surface, no photographs or images of the traces produced by crawling crinoids have been available. Herein, we present results of neoichnological experiments using the shallowest species of living stalked crinoid, Metacrinus rotundus, dredged from Suruga Bay (near the town of Numazu, Shizuoka Prefecture, * 140 m depth). Our results demonstrate that isocrinids produce characteristic locomotion traces, which have some preservation potential. They are composed of rather deep and wide, sometimes weakly sinuous, central drag marks left by the stalk and cirri, and short, shallow scratch marks made by the arms. Based on the functional morphology and taphonomy, it has been argued that the ability to autotomize the stalk and relocate had already evolved in the oldest stem-group isocrinids (holocrinids), likely in response to increased benthic predation pressure during the so-called Mesozoic marine revolution. Our data show that this hypothesis may be corroborated in the future by ichnological findings, which may provide more direct proof of active locomotion in Triassic holocrinids.

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“…They are irregular, with amplitudes of several centimeters. Borings belong to Balanoglossites and Trypanites, characteristic ichno taxa of Middle Triassic ramp settings (Knaust 1998(Knaust , 2007Knaust et al 2012;Chrząstek 2013).…”

Section: Firmgrounds and Hardgroundsmentioning

confidence: 99%

Integrated bio- and cyclostratigraphy of Middle Triassic (Anisian) ramp deposits, NW Bulgaria

Ajdanlijsky

Strasser

Götz³

2019

Geologica Carpathica

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A cyclostratigraphic interpretation of peritidal to shallow-marine ramp deposits of the early Middle Triassic (Anisian) Opletnya Member exposed in outcrops along the Iskar River gorge, NW Bulgaria, is presented. Based on facies trends and bounding surfaces, depositional sequences of several orders can be identified. New biostratigraphic data provide a time frame of the studied succession with placement of the boundaries of the Anisian substages and show that the Aegean (early Anisian) substage lasted about 1.6 Myr. In the corresponding interval in the two studied sections, 80 elementary sequences are counted. Five elementary sequences compose a small-scale sequence. The prominent cyclic pattern of the Opletnya Member can thus be interpreted in terms of Milankovitch cyclicity: elementary sequences represent the precession (20-kyr) cycle and small-scale sequences the short eccentricity (100-kyr) cycle in the Milankovitch frequency band. Medium-scale sequences are defined based on lithology but only in two cases can be attributed to the long eccentricity cycle of 405 kyr. The transgressive-regressive facies trends within the sequences of all scales imply that they were controlled by sea-level changes, and that these were in tune with the climate changes induced by the orbital cycles. However, the complexity of facies and sedimentary structures seen in the Opletnya Member also implies that additional factors such as lateral migration of sediment bodies across the ramp were active. In addition, three major sequence boundaries have been identified in the studied sections, which can be correlated with the boundaries Ol4, An1, and An2 of the Tethyan realm.

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Trace fossils from the Lower Muschelkalk of Raciborowice Górne (North Sudetic Synclinorium, SW Poland) and their palaeoenvironmental interpretation

Cited by 22 publications

References 261 publications

Rosarichnoides sudeticus igen. et isp. nov. and associated fossils from the Coniacian of the North Sudetic Synclinorium (SW Poland)

Rosarichnoides sudeticus igen. et isp. nov. and associated fossils from the Coniacian of the North Sudetic Synclinorium (SW Poland)

Experimental neoichnology of crawling stalked crinoids

Integrated bio- and cyclostratigraphy of Middle Triassic (Anisian) ramp deposits, NW Bulgaria

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