Upper Devonian Sponges from the Holy Cross Mountains, Central Poland

Palaeontology ◽  
2001 ◽  
Vol 44 (3) ◽  
pp. 447-488 ◽  
Author(s):  
J. Keith Rigby ◽  
Andrzej Pisera ◽  
Tomasz T. Wrzolek ◽  
Grzegorz Racki
Keyword(s):  
Upper Devonian ◽  
Holy Cross Mountains ◽  
Central Poland

scholarly journals Famennian ostracods from the Istanbul zone (Gebze, Kocaeli, NW Turkey) and their paleogeographical relations

2012 ◽  
Vol 63 (5) ◽  
pp. 355-363 ◽  
Author(s):  
Atike Nazik ◽  
Șenol Çapkinoğlu ◽  
Emine Șeker
Keyword(s):  
North Africa ◽  
Upper Devonian ◽  
Late Devonian ◽  
Rhenish Massif ◽  
Cantabrian Mountains ◽  
Holy Cross Mountains ◽  
Thin Walls ◽  
Nw Turkey ◽  
Conodont Zonation ◽  
First Time

Abstract Famennian (Late Devonian) ostracods of the Thuringian Mega-Assemblage were recovered for the first time from three incomplete sections of the Ayineburnu Member of the Büyükada Formation in the Denizliköy area (Gebze, NW Turkey), which were sampled for conodonts. Conodont faunas define an interval extending from the Upper rhomboidea? or Lower marginifera Zone into the Middle expansa Zone of the standard Upper Devonian conodont zonation. The ostracod faunas found here consist of species mainly with thin-walls, long spines and often smooth surfaces such as Rectonaria, Tricornina, Orthonaria, Triplacera, Beckerhealdia, Timorhealdia, Bohemina, Paraberounella and Acratia. These taxa indicate faunal relationship with Thuringia and the Rhenish Massif in Germany, the Cantabrian Mountains and Pyrenees in Spain, Holy Cross Mountains in Poland, North Africa and China.

Water column euxinia and wildfire evidence during deposition of the Upper Famennian Hangenberg event horizon from the Holy Cross Mountains (central Poland)

2007 ◽  
Vol 144 (3) ◽  
pp. 569-595 ◽  
Author(s):  
LESZEK MARYNOWSKI ◽  
PAWEŁ FILIPIAK
Keyword(s):  
Organic Matter ◽  
Event Horizon ◽  
Black Shale ◽  
Rapid Change ◽  
Taxonomic Composition ◽  
Critical Threshold ◽  
Holy Cross Mountains ◽  
Central Poland ◽  
Palynological Study ◽  
Amorphous Organic Matter

A palynological study of the uppermost Famennian section from Kowala Quarry (Holy Cross Mountains, central Poland) allowed recognition of two miospore zones: LV (Retispora lepidophyta–Apiculiretusispora verrucosa) and LN (Retispora lepidophyta–Verrucosisporites nitidus). Based on palynology and sedimentology, the black shale within the upper part of the section is identified as equivalent to the Hangenberg Black Shale, which is known globally. This black shale contains compounds characteristic of photic zone euxinia, including isorenieratane and its derivatives. Such compounds are absent in the organic-poor marls and shales occurring below the LN Zone, and are present only as traces in the layers just above the black shale, indicating fluctuations in the oxygen minimum zone during uppermost Famennian sedimentation. Palynofacies show high amounts of amorphous organic matter and prasinophyte concentrations in the black shale, and a subsequent significant decrease of amorphous organic matter concomitant with a rapid increase of terrestrial input (mainly miospores with common tetrads) in the layers above the black shale. This supports the relatively rapid change in the taxonomic composition of phytoplankton caused by fluctuations of the chemocline. The whole succession corresponds to one sea-level rise and fall. The presence of high concentrations of peri-condensed polycyclic aromatic hydrocarbons and large amounts of small charcoal particles at the Hangenberg event horizon indicate the occurrence of wildfires. Such observations suggest that atmospheric O22 levels had exceeded the critical threshold of 13 %, above which wildfires may occur, by latest Famennian time.

scholarly journals Bioerosion traces and borings in the Upper Devonian vertebrate remains from the Holy Cross Mountains, Poland Bioerosion in fish remains

2021 ◽  
Author(s):  
Piotr Szrek ◽  
Patrycja G. Dworczak ◽  
Olga Wilk
Keyword(s):  
Shallow Water ◽  
Cross Section ◽  
Water Environment ◽  
Trace Fossils ◽  
Upper Devonian ◽  
Holy Cross Mountains ◽  
Shallow Tunnels ◽  
Shallow Water Environment ◽  
Storm Wave ◽  
Fish Remains

Among the hundreds of collected Devonian vertebrate macrofossils in the Holy Cross Mountains, placoderms dominate and provide data on their morphology, distribution and taphonomy. So far 17 out of more than 500 studied specimens have revealed bones with surfaces covered by sediment-filled trace fossils. The traces have been made on the vertebrate remains before their final burial. The borings, oval in cross-section, include dendroidal networks of shallow tunnels or short, straight or curved individual scratches and grooves, which frequently create groups on the both sides of the bones. ?Karethraichnus isp. from Kowala and ?Osteocallis isp. from Wietrznia are the oldest record of these ichnogenera. Sedimentological clues indicate a shallow water environment, probably from the slope below the storm wave base.

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