TY - JOUR
T1 - Biostratigraphical and palaeobiogeographical patterns of the larger porcelaneous foraminifer Austrotrillina Parr, 1942
AU - Bassi, Davide
AU - Aftabuzzaman, Md
AU - Bolivar-Feriche, Monica
AU - Braga, Juan Carlos
AU - Aguirre, Julio
AU - Renema, Willem
AU - Takayanagi, Hideko
AU - Iryu, Yasufumi
N1 - Funding Information:
This study was supported by local research fund of the University of Ferrara (2016–2020) and FIR2018 (D.B.). This paper is a scientific contribution of the Project MIUR–Dipartimenti di Eccellenza 2018–2022 and of the PRIN 2017RX9XXXY (Biota resilience to global change: biomineralisation of planktic and benthic calcifiers in the past, present and future). Samples from the Tallabar limestone in East Kalimantan were collected in a field campaign (June 2011) in the frame of the Throughflow Initial Training Network, funded by the Marie Curie Actions Plan, Seventh Framework Programme of the European Union [grant 237922]. J.A. and J.C.B. were funded by the research project PGC2018-099391-B-100 of the Spanish Ministerio de Ciencia, Innovación y Competitividad, and the research group RMN190 of the Junta de Andalucía. DB sincerely acknowledges the International Joint Graduate Program in Earth and Environmental Sciences (GP-EES) for the invitation to the Tohoku University. We are grateful for the collection support from Mr. Jun Nemoto, curator of the Museum of Natural History, Tohoku University. We appreciated the Editor Richard Jordan and an anonymous reviewer for their constructive comments.
Funding Information:
This study was supported by local research fund of the University of Ferrara (2016?2020) and FIR2018 (D.B.). This paper is a scientific contribution of the Project MIUR?Dipartimenti di Eccellenza 2018?2022 and of the PRIN 2017RX9XXXY (Biota resilience to global change: biomineralisation of planktic and benthic calcifiers in the past, present and future). Samples from the Tallabar limestone in East Kalimantan were collected in a field campaign (June 2011) in the frame of the Throughflow Initial Training Network, funded by the Marie Curie Actions Plan, Seventh Framework Programme of the European Union [grant 237922]. J.A. and J.C.B. were funded by the research project PGC2018-099391-B-100 of the Spanish Ministerio de Ciencia, Innovaci?n y Competitividad, and the research group RMN190 of the Junta de Andaluc?a. DB sincerely acknowledges the International Joint Graduate Program in Earth and Environmental Sciences (GP-EES) for the invitation to the Tohoku University. We are grateful for the collection support from Mr. Jun Nemoto, curator of the Museum of Natural History, Tohoku University. We appreciated the Editor Richard Jordan and an anonymous reviewer for their constructive comments.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/12
Y1 - 2021/12
N2 - Among the Tethyan larger porcelaneous foraminifera widespread from the middle–late Eocene to the middle Miocene, Austrotrillina Parr, 1942 is the only genus showing a non-homogeneous shell structure. This consists of a parakeriotheca, coated by a thin, dense tectum. Four Austrotrillina species (A. brunni, A. eocaenica, A. howchini, A. striata) have been often used as biostratigraphical markers in the Mediterranean and Indo-Pacific areas. New materials from southeastern Spain and Central Indo-Pacific (Indonesia, Kita-daito-jima, Kikai Seamount) were studied to assess their taxonomic status, species circumscription and palaeobiogeographical patterns. Based on re-assessed shell structures A. asmariensis Adams is considered a junior synonym of A. brunni Marie. Austrotrillina eocaenica first appears in the middle–late Eocene of Iran. Two Rupelian descendants, A. brunni and A. striata, migrated from the Western Tethys into the Indo-Pacific. Austrotrillina striata reached Indonesia and Western Australia in the Chattian, then disappeared in the Langhian of Kita-daito-jima. Austrotrillina brunni first occurred in the Burdigalian of Indonesia and Western Australia and disappeared in the early Serravallian of Western and South Australia. Austrotrillina brunni and A. striata disappeared in the Serravallian westernmost Mediterranean (southeastern Spain). From the Burdigalian the exclusive occurrence of A. howchini in the Indo-Pacific areas is a possible result of the closing Tethyan Seaway, which differentiated the Mediterranean and Indo-Pacific bioprovinces. This species disappears in the latemost Langhian–early Serravallian of South Australia and in the Kikai Seamount. The palaeobiogeographical distribution of these species suggests an early Miocene active connection of Eastern Africa with the Central Indo–West Pacific.
AB - Among the Tethyan larger porcelaneous foraminifera widespread from the middle–late Eocene to the middle Miocene, Austrotrillina Parr, 1942 is the only genus showing a non-homogeneous shell structure. This consists of a parakeriotheca, coated by a thin, dense tectum. Four Austrotrillina species (A. brunni, A. eocaenica, A. howchini, A. striata) have been often used as biostratigraphical markers in the Mediterranean and Indo-Pacific areas. New materials from southeastern Spain and Central Indo-Pacific (Indonesia, Kita-daito-jima, Kikai Seamount) were studied to assess their taxonomic status, species circumscription and palaeobiogeographical patterns. Based on re-assessed shell structures A. asmariensis Adams is considered a junior synonym of A. brunni Marie. Austrotrillina eocaenica first appears in the middle–late Eocene of Iran. Two Rupelian descendants, A. brunni and A. striata, migrated from the Western Tethys into the Indo-Pacific. Austrotrillina striata reached Indonesia and Western Australia in the Chattian, then disappeared in the Langhian of Kita-daito-jima. Austrotrillina brunni first occurred in the Burdigalian of Indonesia and Western Australia and disappeared in the early Serravallian of Western and South Australia. Austrotrillina brunni and A. striata disappeared in the Serravallian westernmost Mediterranean (southeastern Spain). From the Burdigalian the exclusive occurrence of A. howchini in the Indo-Pacific areas is a possible result of the closing Tethyan Seaway, which differentiated the Mediterranean and Indo-Pacific bioprovinces. This species disappears in the latemost Langhian–early Serravallian of South Australia and in the Kikai Seamount. The palaeobiogeographical distribution of these species suggests an early Miocene active connection of Eastern Africa with the Central Indo–West Pacific.
KW - Biostratigraphy
KW - Indo-Pacific
KW - Mediterranean
KW - Miliolids
KW - Oligocene–Miocene
KW - Systematics
KW - Tethys
KW - shallow-water carbonates
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U2 - 10.1016/j.marmicro.2021.102058
DO - 10.1016/j.marmicro.2021.102058
M3 - Article
AN - SCOPUS:85117782952
VL - 169
JO - Marine Micropaleontology
JF - Marine Micropaleontology
SN - 0377-8398
M1 - 102058
ER -