Pennsylvanian fossil flora from the Velebit Mountains and Lika region (SW Croatia)

Cleal, Christopher J.; Tenchov, Y.G.; Sremac, Jasenka; Đerek, T.; Japundžić, J

doi:10.3140/bull.geosci.1529

Cited by 11 publications

(5 citation statements)

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“…This upper Carboniferous succession is considered to be an equivalent of the Auernig Beds (SALOPEK, 1942;SOKAČ et al, 1976;KOCHAN-SKY-DEVIDÉ, 1973). The end of the Carboniferous and the beginning of the Permian are characterized by Rattendorf limestones with Schwagerina and Pseudoschwagerina fossils (SREMAC & KOCHANSKY-DEVIDÉ, 1982;CLEAL et al, 2015). The contact between the Auernig Group and the Rattendorf limestones is marked by the occurrence of lithic greywackes and coarse-grained terrigenous clasts, indicating orogenic movements that caused infilling of the sedimentary basin with coarse and immature sediment (RAFFAELLI & ŠĆAVNIČAR, 1968;KOCHANSKY-DEVIDÉ, 1973).…”

Section: Geological Setting and Description Of The Studied Areamentioning

confidence: 99%

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2024

Geol Cro

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The multicoloured 'Košna' conglomerates are investigated in the area of the Košna Voda spring, in the Brušane area of Velebit Mt., Croatia. The studied conglomerates consist of red-coloured matrix and clasts of various lithologies (sandstones, limestones, chert and quartz pebbles) and sizes, suggesting provenance from different areas. Average clast size and their percentage was determined by the Udden-Wentworth classification with estimation of the matrix content. Clasts and matrix lithological and mineralogical characteristics were determined using petrographic, ore microscopy, and X-ray diffraction analysis. Sandstone clasts in the studied conglomerates are classified as lithic arenites, subarkoses and arkoses. Limestone clasts are mostly wackestones to packstones with foraminifera, ostracods, echinoid and bryozoan fragments that derive from late Carboniferous/early Permian shallow-marine limestones. Calcispheres and incipient growth forms of Microcodium are also present, suggesting different sediment sources and resedimentation processes. Fragments of fusulinid foraminifera were identified in the matrix of the 'Košna' conglomerates. Based on the analyses performed, and field observations, the 'Košna' conglomerates are described as early Permian (Cisuralian) polymictic clast-supported to matrix-supported conglomerates and breccia-conglomerates that share structural and textural similarities with conglomerates from other areas in the Dinarides, as well as in the Eastern and Southern Alps. The 'Košna' conglomerates are younger than the Sakmarian and are comparable with the Trogkofel limestones of the Carnic Alps and the Karavanke Mts. in Slovenia. We suggest that the studied deposits originated from the uplifted Variscan Mountains during the Variscan and Saalian orogenic movements, and were finally deposited from tractive flows and occasional debris flows in a shallow marine environment of the Palaeo-Tethys, possibly in fan deltas.

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Section: Geological Setting and Description Of The Studied Areamentioning

confidence: 99%

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2024

Geol Cro

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“…Mixed siliciclastic-carbonate deposition is typical for the Late Carboniferous of this region. The stratigraphic age (late Kasimovian or earliest Gzhelian) was determined from microfossils and land megaflora (KOCHANSKY-DEVIDÉ, 1955, 1970SREMAC, 2012;CLEAL et al, 2015).…”

Section: Brachiopod Taxamentioning

confidence: 99%

“…1) is generally rich in fossils. A well preserved terrestric megaflora indicates the vicinity of land (SREMAC, 2012;CLEAL et al, 2015). Marine fossils are diverse, with a predomination of fusulinids and crinoid ossicles, together with calcareous algae, brachiopods (Figs.…”

Section: Palaeoecology and The Local Distribution Of Brachiopod Generamentioning

confidence: 99%

“…Their geographic distribution was closely related to the position of continental shelves and possible sea-ways and climate gradients, recently studied by several authors (ANGIOLINI et al, 2007;BERRA & ANGIOLINI, 2014). During the Late Carboniferous, the study area was a part of NE Gondwana, situated near the equator (VO-ZAROVA et al, 2009;SREMAC, 2012;CLEAL et al, 2015) In order to identify possible migration routes, some of the common Carboniferous brachiopod genera from Velebit Mt. were selected for further palaeobiogeographic studies.…”

Section: Palaeobiogeographic Studiesmentioning

confidence: 99%

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Palaeobiogeography of the Late Carboniferous brachiopoda from Velebit Mt. (Croatia)

Japundžić¹,

Sremac²

2016

Geol Cro

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An abundant and diverse Late Carboniferous brachiopod fauna from Velebit Mt. (Croatia) comprises 63 brachiopod taxa dominated by Productida and Spiriferida. The Spiriferinida, Athyridida, Orthotethida and Rhynchonellata are less common, while the Orthida, Dictyonellida and Terebratulida occur in very small numbers. Brachiopods are mostly preserved as casts and moulds in shales, limestones and sandstones. Associated fusulinid foraminifera and calcareous algae indicate a Kasimovian to Gzhelian age for the brachiopod-bearing deposits. The global biogeographic distribution of brachiopod taxa indicates the probable seaways and brachiopod migration routes, along the Euramerican shelves. to 6 km wide, representing the core of an anticline, with a NW-SE strike (Fig. 1). They exhibit a variety of ancient environments varying from shoreline forests and swamps, through coastal and shallow shelf biomes (SREMAC, 2012; CLEAL et al., 2015). Carboniferous shelves were densely populated with foraminifera (mostly fusulinids), calcareous algae, brachiopods, crinoids, bry-Article history: Manuscript

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“…The systematic position and diversity of the medullosalean pteridosperms have been extensively studied (e.g., Cleal, ; Cleal & Shute, , ; Cleal, Tenchov, Sremac, Đerek, & Japundžić, ). However, the evolutionary and ecological relationships for some specific groups of Pennsylvanian medullosaleans are still poorly understood.…”

Section: Introductionmentioning

confidence: 99%

Douropteris alvareziigen. nov., sp. nov., a new medullosalean pteridosperm from the Late Pennsylvanian of Portugal

et al. 2018

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A new plant fossil‐genus, Douropteris alvarezii gen. nov., sp. nov., is described from the Douro Basin (lower Stephanian C [lower Gzhelian], Upper Pennsylvanian) in north‐western Portugal. Douropteris alvarezii has a remarkable morphology characterized by an unusual combination of features seen in several different fossil‐genera belonging to ferns and pteridosperms. Its unique and distinguishing features place it nearest to the medullosalean pteridosperms Margaritopteris and Callipteridium, suggesting close affinities with the fossil‐family Cyclopteridaceae. Morphologically, Margaritopteris is the closest relative with basis on the strong resemblance to the veining pattern of Douropteris gen. nov. Here, Douropteris represents a potential “Lazarus taxon” or evolutionary descendant from the Margaritopteris lineage.

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Pennsylvanian fossil flora from the Velebit Mountains and Lika region (SW Croatia)

Cited by 11 publications

References 11 publications

Untitled

Untitled

Palaeobiogeography of the Late Carboniferous brachiopoda from Velebit Mt. (Croatia)

Douropteris alvareziigen. nov., sp. nov., a new medullosalean pteridosperm from the Late Pennsylvanian of Portugal

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