Isolated asterozoan ossicles and pedicellariae occur in micropalaeontological samples from the Da... more Isolated asterozoan ossicles and pedicellariae occur in micropalaeontological samples from the Darriwilian (Middle Ordovician) of the Mishina Gora section, north-western Russia. The well-preserved Bursulella unicornis type fossils represent the oldest hitherto record of asterozoan pedicellariae. The accompanying ossicles are not diagnostic but allow their tentative placement within the asteroid stem group. The abundance of disarticulated ossicles in the samples proves that asterozoans were not as rare as they have been considered and were important members of Ordovician ecosystems in the Baltic Palaeobasin.
Ostracod data matrix used in the statistical analyses. The matrix contains locality, sample, stra... more Ostracod data matrix used in the statistical analyses. The matrix contains locality, sample, stratigraphic and quantitative species occurrence data. The information derives from literature and from newly collected samples from the Paroveja-9 drill core, Lithuania.
The ostracode Lavachilina evae gen. et sp. nov. is described from the Arenig of Western Russia. I... more The ostracode Lavachilina evae gen. et sp. nov. is described from the Arenig of Western Russia. Its carapace possesses a unique discontinuous velum, developed at both ends as a narrow spinose ridge. The systematic position of L. evae is un− certain. Its character set shows mostly palaeocope affinities but also some features of leiocopes. L. evae is tentatively as− signed to the palaeocope family Oepikellidae, possibly representing an early member of that family. Although L. evae ex− isted contemporaneously with palaeocopes such as Laccochilina, it does not appear to be closely related to these early eurychilinoids.
1Heimholz Zentrum für Polar und Meeresforschung, AWI Bremerhaven, Germany 2MARUM, Center for Mari... more 1Heimholz Zentrum für Polar und Meeresforschung, AWI Bremerhaven, Germany 2MARUM, Center for Marine Environmental Sciences, Bremen University, Germany gerard.versteegh@awi.de 3Unité PPP, Département de Géologie, Université de Liège, Belgique. P.Gerrienne@ulg.ac.be; EJ.Javaux@ulg.ac.be; jystorme@ulg.ac.be 4Unité Evolution, Ecologie et Paléontologie, Université de Lille 1, France thomas.servais@univ-lille1.fr 5Department of Geology, University of Tartu, Estonia oive.tinn@ut.ee
The early Silurian Lagerstätte in central Estonia, near the village of Kalana, offers an impressi... more The early Silurian Lagerstätte in central Estonia, near the village of Kalana, offers an impressive view into a shallow water marine ecosystem of those days. The operating quarry has opened limestone and dolomite succession of early Aeronian (Llandovery, Silurian) age, in local stratigraphy known as the Raikküla regional stage. Biostratigraphically, the Raikküla Stage correlates with the Aspelundia Superzone (Männik, 2007), the layers with exceptionally preserved fossils belong to Pranognathus tenuis conodont zone (Ainsaar et al., 2014).
Isolated asterozoan ossicles and pedicellariae occur in micropalaeontological samples from the Da... more Isolated asterozoan ossicles and pedicellariae occur in micropalaeontological samples from the Darriwilian (Middle Ordovician) of the Mishina Gora section, north-western Russia. The well-preserved Bursulella unicornis type fossils represent the oldest hitherto record of asterozoan pedicellariae. The accompanying ossicles are not diagnostic but allow their tentative placement within the asteroid stem group. The abundance of disarticulated ossicles in the samples proves that asterozoans were not as rare as they have been considered and were important members of Ordovician ecosystems in the Baltic Palaeobasin.
Ostracod data matrix used in the statistical analyses. The matrix contains locality, sample, stra... more Ostracod data matrix used in the statistical analyses. The matrix contains locality, sample, stratigraphic and quantitative species occurrence data. The information derives from literature and from newly collected samples from the Paroveja-9 drill core, Lithuania.
The ostracode Lavachilina evae gen. et sp. nov. is described from the Arenig of Western Russia. I... more The ostracode Lavachilina evae gen. et sp. nov. is described from the Arenig of Western Russia. Its carapace possesses a unique discontinuous velum, developed at both ends as a narrow spinose ridge. The systematic position of L. evae is un− certain. Its character set shows mostly palaeocope affinities but also some features of leiocopes. L. evae is tentatively as− signed to the palaeocope family Oepikellidae, possibly representing an early member of that family. Although L. evae ex− isted contemporaneously with palaeocopes such as Laccochilina, it does not appear to be closely related to these early eurychilinoids.
1Heimholz Zentrum für Polar und Meeresforschung, AWI Bremerhaven, Germany 2MARUM, Center for Mari... more 1Heimholz Zentrum für Polar und Meeresforschung, AWI Bremerhaven, Germany 2MARUM, Center for Marine Environmental Sciences, Bremen University, Germany gerard.versteegh@awi.de 3Unité PPP, Département de Géologie, Université de Liège, Belgique. P.Gerrienne@ulg.ac.be; EJ.Javaux@ulg.ac.be; jystorme@ulg.ac.be 4Unité Evolution, Ecologie et Paléontologie, Université de Lille 1, France thomas.servais@univ-lille1.fr 5Department of Geology, University of Tartu, Estonia oive.tinn@ut.ee
The early Silurian Lagerstätte in central Estonia, near the village of Kalana, offers an impressi... more The early Silurian Lagerstätte in central Estonia, near the village of Kalana, offers an impressive view into a shallow water marine ecosystem of those days. The operating quarry has opened limestone and dolomite succession of early Aeronian (Llandovery, Silurian) age, in local stratigraphy known as the Raikküla regional stage. Biostratigraphically, the Raikküla Stage correlates with the Aspelundia Superzone (Männik, 2007), the layers with exceptionally preserved fossils belong to Pranognathus tenuis conodont zone (Ainsaar et al., 2014).
Uploads
Papers by Oive Tinn