TY - JOUR
T1 - Triassic and Jurassic possible planktonic foraminifera and the assemblages recovered from the Ogrodzieniec Glauconitic Marls Formation (uppermost Callovian and lowermost Oxfordian, Jurassic) of the Polish Basin
AU - Hart, Malcolm B.
AU - Gebhardt, Holger
AU - Setoyama, Eiichi
AU - Smart, Christopher W.
AU - Tyszka, Jarosław
N1 - Publisher Copyright:
© Author(s) 2023. This work is distributed under the Creative Commons Attribution 4.0 License.
PY - 2023/12/8
Y1 - 2023/12/8
N2 - In the 1960s and 1970s Werner Fuchs of the Austrian Geological Survey (Vienna) described a significant number of new foraminiferal taxa that he considered ancestral to the planktonic foraminifera. All these taxa are well-curated in the collections of the Austrian Geological Survey and have been studied by one of us (Malcolm B. Hart). Some of these taxa, from the Triassic and lowermost Jurassic strata of Austria and northern Italy, are poorly preserved, possibly the result of having an original aragonitic wall structure. None of these taxa possess characters which give the appearance of a planktonic mode of life, although some of them (e.g. Oberhauserella, Praegubkinella) may well have been ancestral to the holoplanktonic foraminifera that appeared in the Toarcian and younger strata. Other taxa in the collections of the Austrian Geological Survey (part of GeoSphere Austria), from the Jurassic of Poland, are preserved as glauconitic steinkerns and are either unidentifiable as foraminifera or suspect in terms of their stratigraphical and evolutionary significance.
AB - In the 1960s and 1970s Werner Fuchs of the Austrian Geological Survey (Vienna) described a significant number of new foraminiferal taxa that he considered ancestral to the planktonic foraminifera. All these taxa are well-curated in the collections of the Austrian Geological Survey and have been studied by one of us (Malcolm B. Hart). Some of these taxa, from the Triassic and lowermost Jurassic strata of Austria and northern Italy, are poorly preserved, possibly the result of having an original aragonitic wall structure. None of these taxa possess characters which give the appearance of a planktonic mode of life, although some of them (e.g. Oberhauserella, Praegubkinella) may well have been ancestral to the holoplanktonic foraminifera that appeared in the Toarcian and younger strata. Other taxa in the collections of the Austrian Geological Survey (part of GeoSphere Austria), from the Jurassic of Poland, are preserved as glauconitic steinkerns and are either unidentifiable as foraminifera or suspect in terms of their stratigraphical and evolutionary significance.
UR - http://www.scopus.com/inward/record.url?scp=85180589274&partnerID=8YFLogxK
UR - https://pearl.plymouth.ac.uk/context/gees-research/article/1976/viewcontent/jm_42_277_2023.pdf
U2 - 10.5194/jm-42-277-2023
DO - 10.5194/jm-42-277-2023
M3 - Article
AN - SCOPUS:85180589274
SN - 0262-821X
VL - 42
SP - 277
EP - 290
JO - Journal of Micropalaeontology
JF - Journal of Micropalaeontology
IS - 2
ER -