The first record of osteolepiform sarcopterygian from the
Moravian Karst (Famennian, Czech Republic)

a 2014

The first record of osteolepiform sarcopterygian from the Moravian Karst (Famennian, Czech Republic)

POUKAROVÁ, Hedvika a Tomáš WEINER

Základní údaje

Originální název

The first record of osteolepiform sarcopterygian from the Moravian Karst (Famennian, Czech Republic)

Autoři

POUKAROVÁ, Hedvika a Tomáš WEINER

Vydání

15th Czech-Polish-Slovak Paleontological Conference, 2014

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10500 1.5. Earth and related environmental sciences

Stát vydavatele

Slovensko

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/14:00074343

Organizační jednotka

Přírodovědecká fakulta

ISBN

978-80-224-1399-2

Klíčová slova anglicky

Sarcopterygii; Osteolepiformes; cosmine; Famennian; Rhenohercynian basin; Moravian Karst

Příznaky

Mezinárodní význam

Změněno: 25. 2. 2015 11:34, Mgr. Hedvika Weinerová, Ph.D.

Anotace

V originále

Devonian and Carboniferous sequences of the Moravian Karst were deposited in the Rheno-Hercynian basin at the southern margin of Laurussia. All the previously known sarcopterygian remains from these deposits belong to onychodontiform fishes (eg. Ginter in Hladil et al. 1991). Recently, a cosmine-covered dermal bone was found in a small abandoned pit-quarry near the road leading from Brno Líšeň to Ochoz u Brna, where the two meters thick section of the Famennian Křtiny Limestones (Líšeň Formation) is exposed. This specimen was obtained from darker grey biodetrital limestones close to the boundary of the Upper Palmatolepis rugosa trachytera and the Lower Palmatolepis perlobata postera conodont zones (the bed “B” sensu Weiner & Kalvoda 2013). The dermal bone is subtriangular in outline and bears characters of the lateral extrascapular. The absence of overlapped area at the median margin suggests that the lateral extrascapulars overlapped the median extrascapular. This condition is usual in osteolepiforms (Jarvik, 1980). The openings of tubules leading to the main sensory and supratemporal commisural canals are numerous and evenly distributed at the upper surface of the bone. In contrast to many other known cosmine-bearing osteolepiforms the course of sensory canals cannot be distinguished by tracing these openings. The pit line is developed. The absence of Westoll lines and buried odontodes, enamel/enameloid not dipping into the flask shaped pore-canals, relatively small size of the pore-canals surface openings together with the shape of the pore-canals and interconnecting mesh canals also resemble conditions common in osteolepiforms. Osteolepiform fishes were previously reported from freshwater, brackish and marine sediments. The new specimen was obtained from clearly marine deposits. This is the first record of osteolepiform sarcopterygian from the Moravian Karst. The contribution was supported by the grant project GACR 205/14-18183S.

Návaznosti

GA14-18183S, projekt VaV

Název: Sekvenční stratigrafie devonských bioeventů - výkyvy mořské hladiny na přechodu od klimatického režimu greenhouse k icehouse

Investor: Grantová agentura ČR, Sekvenční stratigrafie devonských bioeventů – výkyvy mořské hladiny na přechodu od klimatického režimu greenhouse k icehouse

Citovat

POUKAROVÁ, Hedvika a Tomáš WEINER. The first record of osteolepiform sarcopterygian from the Moravian Karst (Famennian, Czech Republic). In 15th Czech-Polish-Slovak Paleontological Conference. 2014. ISBN 978-80-224-1399-2.

@proceedings{1217754,
   author = {Poukarová, Hedvika and Weiner, Tomáš},
   booktitle = {15th Czech-Polish-Slovak Paleontological Conference},
   keywords = {Sarcopterygii; Osteolepiformes; cosmine; Famennian; Rhenohercynian basin; Moravian Karst},
   language = {eng},
   isbn = {978-80-224-1399-2},
   title = {The first record of osteolepiform sarcopterygian from the Moravian Karst (Famennian, Czech Republic)},
   year = {2014}
}

TY  - CONF
ID  - 1217754
AU  - Poukarová, Hedvika - Weiner, Tomáš
PY  - 2014
TI  - The first record of osteolepiform sarcopterygian from the Moravian Karst (Famennian, Czech Republic)
SN  - 9788022413992
KW  - Sarcopterygii
KW  - Osteolepiformes
KW  - cosmine
KW  - Famennian
KW  - Rhenohercynian basin
KW  - Moravian Karst
N2  - Devonian and Carboniferous sequences of the Moravian Karst were deposited in the Rheno-Hercynian basin at the southern margin of Laurussia. All the previously known sarcopterygian remains from these deposits belong to onychodontiform fishes (eg. Ginter in Hladil et al. 1991). Recently, a cosmine-covered dermal bone was found in a small abandoned pit-quarry near the road leading from Brno Líšeň to Ochoz u Brna, where the two meters thick section of the Famennian Křtiny Limestones (Líšeň Formation) is exposed. This specimen was obtained from darker grey biodetrital limestones close to the boundary of the Upper Palmatolepis rugosa trachytera and the Lower Palmatolepis perlobata postera conodont zones (the bed “B” sensu Weiner & Kalvoda 2013). The dermal bone is subtriangular in outline and bears characters of the lateral extrascapular. The absence of overlapped area at the median margin suggests that the lateral extrascapulars overlapped the median extrascapular. This condition is usual in osteolepiforms (Jarvik, 1980). The openings of tubules leading to the main sensory and supratemporal commisural canals are numerous and evenly distributed at the upper surface of the bone. In contrast to many other known cosmine-bearing osteolepiforms the course of sensory canals cannot be distinguished by tracing these openings. The pit line is developed. The absence of Westoll lines and buried odontodes, enamel/enameloid not dipping into the flask shaped pore-canals, relatively small size of the pore-canals surface openings together with the shape of the pore-canals and interconnecting mesh canals also resemble conditions common in osteolepiforms. Osteolepiform fishes were previously reported from freshwater, brackish and marine sediments. The new specimen was obtained from clearly marine deposits. This is the first record of osteolepiform sarcopterygian from the Moravian Karst. The contribution was supported by the grant project GACR 205/14-18183S.
ER  -

POUKAROVÁ, Hedvika a Tomáš WEINER. The first record of osteolepiform sarcopterygian from the Moravian Karst (Famennian, Czech Republic). In \textit{15th Czech-Polish-Slovak Paleontological Conference}. 2014. ISBN~978-80-224-1399-2.

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