Prof.Dr. O. Lehnert

2021

• Ahlberg P., Lundberg F., Calner M., Lehnert O., Dahlqvist P., Joachimski M.:
  Miaolingian (Cambrian) trilobite biostratigraphy and carbon isotope chemostratigraphy in the Tingskullen drill core, Öland, Sweden
  In: Estonian Journal of Earth Sciences 70 (2021), S. 18
  ISSN: 1736-4728
  DOI: 10.3176/earth.2021.03

2019

• Levendal TC., Lehnert O., Sopher D., Juhlin C., Erlström M.:
  Ordovician carbonate mud mounds of the Baltoscandian Basin in time and space – A geophysical approach. Palaeogeography. Palaeoclimatology Palaeoecology.
  In: Palaeogeography, Palaeoclimatology, Palaeoecology 535 (2019)
  ISSN: 0031-0182
  DOI: 10.1016/j.palaeo.2019.109345
• Levendal TC., Sopher D., Juhlin C., Lehnert O.:
  Investigation of an Ordovician carbonate mound beneath Gotland, Sweden, using 3D seismic and well data
  In: Journal of Applied Geophysics 162 (2019), S. 22-34
  ISSN: 0926-9851
  DOI: 10.1016/j.jappgeo.2019.01.008
• Popov L., Álvaro JJ., Holmer L., Bauert H., Ghobadi Pour M., Dronov AV., Lehnert O., Hints O., Männik P., Zhang Z., Zhang Z.:
  Glendonite occurrences in the Tremadocian of Baltica: first Early Palaeozoic evidence of massive ikaite precipitation at temperate latitudes
  In: Scientific Reports 9 (2019), Art.Nr.: 7205
  ISSN: 2045-2322
  DOI: 10.1038/s41598-019-43707-4
  URL: https://www.nature.com/articles/s41598-019-43707-4

2018

• Li Q., Sone M., Lehnert O., Na L.:
  Early Ordovician sponge-bearing microbialites from Peninsular Malaysia: The initial rise of metazoans in reefs
  In: Palaeoworld (2018)
  ISSN: 1871-174X
  DOI: 10.1016/j.palwor.2018.08.005
• Wu R., Calner M., Lehnert O., Lindskog A., Erlström M., Joachimski M.:
  Conodont biostratigraphy and carbon isotope stratigraphy of the middle Ordovician (Darriwilian) Komstad Limestone Formation, southern Sweden
  In: GFF 140 (2018), S. 44-54
  ISSN: 1103-5897
  DOI: 10.1080/11035897.2018.1435561

2017

• Kröger B., Hints L., Lehnert O.:
  Ordovician reef and mound evolution: The Baltoscandian picture
  In: Geological Magazine 154 (2017), S. 683-706
  ISSN: 0016-7568
  DOI: 10.1017/S0016756816000303
• Lefebvre B., Lehnert O., Gutiérrez-Marco JC., Martin ELO., Nowak H., Akodad M., El Hariri K., Servais T.:
  Age calibration of the Lower Ordovician Fezouata Lagerstätte (Morocco)
  In: Lethaia 51 (2017), S. 296-311
  ISSN: 0024-1164
  DOI: 10.1111/let.12240
  URL: https://onlinelibrary.wiley.com/doi/abs/10.1111/let.12240
• Muhamad H., Juhlin C., Sopher D., Lehnert O., Meinhold G., Arslan A.:
  High-resolution seismic imaging of Paleozoic rocks in the Mora area, Siljan Ring structure, central Sweden
  In: GFF 139 (2017), S. 260-275
  ISSN: 1103-5897
  DOI: 10.1080/11035897.2017.1386712
  URL: https://www.tandfonline.com/doi/full/10.1080/11035897.2017.1386712
• Wu R., Calner M., Lehnert O.:
  Integrated conodont biostratigraphy and carbon isotope chemostratigraphy in the Lower-Middle Ordovician of southern Sweden reveals a complete record of the MDICE
  In: Geological Magazine 154 (2017), S. 334-353
  ISSN: 0016-7568
  DOI: 10.1017/S0016756816000017
• Younes H., Calner M., Lehnert O.:
  The first continuous δ13C record across the Late Silurian Lau Event on Gotland, Sweden
  In: Gff 139 (2017), S. 63-69
  ISSN: 1103-5897
  DOI: 10.1080/11035897.2016.1227362

2016

• Holmer L., Popov L., Lehnert O., Ghobadi Pour M.:
  Ordovician (Darriwilian-Sandbian) linguliform brachiopods from the southern Cuyania Terrane of west-central Argentina
  In: Memoirs of the Association of Australasian Palaeontologists 49 (2016), S. 31-50.
  ISSN: 0810-8889
• Kröger B., Ebbestad JO., Lehnert O.:
  Accretionary mechanisms and temporal sequence of formation of the boda limestone mud-mounds (upper Ordovician), Siljan District, Sweden
  In: Journal of Sedimentary Research 86 (2016), S. 363-379
  ISSN: 1527-1404
  DOI: 10.2110/jsr.2016.12
• Lehnert O., Nowak H., Sarmiento G., Servais T., Gutiérrez-Marco JC., Akodad M.:
  Conodonts from the Lower Ordovician of Morocco – a contribution to the faunal diversity in the famous Fezouata Lagerstätte
  In: Palaeogeography, Palaeoclimatology, Palaeoecology 460 (2016), S. 50-61
  ISSN: 0031-0182
  DOI: 10.1016/j.palaeo.2016.03.023

2015

• Fryda J., Lehnert O., Joachimski M.:
  First record of the early Sheinwoodian carbon isotope excursion (ESCIE) from the Barrandian area of northwestern Perigondwana.
  In: Estonian Journal of Earth Sciences 64 (2015), S. 42-46
  ISSN: 1736-4728
  DOI: 10.3176/earth.2015.08
• Kröger B., Ebbestad JO., Lehnert O., Ullmann CV., Korte C., Frei R., Rasmussen CMØ.:
  Subaerial speleothems and deep karst in central Sweden linked to Hirnantian glaciations
  In: Journal of the Geological Society 172 (2015), S. 349-356
  ISSN: 0016-7649
  DOI: 10.1144/jgs2014-071
• Muhamad H., Juhlin C., Lehnert O., Meinhold G., Andersson M., Juanatey MG., Malehmir A.:
  Analysis of borehole geophysical data from the Mora area of the Siljan Ring impact structure, central Sweden
  In: Journal of Applied Geophysics 115 (2015), S. 183-196
  ISSN: 0926-9851
  DOI: 10.1016/j.jappgeo.2015.02.019
• Wu R., Calner M., Lehnert O., Peterffy O., Joachimski M.:
  Lower-Middle Ordovician δ13C chemostratigraphy of western Baltica (Jämtland, Sweden)
  In: Palaeoworld 24 (2015), S. 110-122
  ISSN: 1871-174X
  DOI: 10.1016/j.palwor.2015.01.003
• Wu R., Calner M., Lehnert O., Petterfy O., Joachimski M.:
  Lower-Middle Ordovician δ
  13C chemostratigraphy of western Baltica (Jämtland, Sweden)
  In: Palaeoworld 24 (2015), S. 110-122
  ISSN: 1871-174X
  DOI: 10.1016/j.palwor.2015.01.003

2014

• Ahmed M., Lehnert O., Fuentes D., Meinhold G.:
  Biomarker evidence for the origin of seep 1 oil and solid bitumen from the Late Devonian Siljan impact structure, Sweden
  In: Organic Geochemistry 68 (2014), S. 13-26
  ISSN: 0146-6380
  DOI: 10.1016/j.orggeochem.2013.12.010.
• Calner M., Lehnert O., Ahlberg P.:
  The IGCP project 591 - 3rd Annual Meeting in Lund 2013
  In: Gff 136 (2014), S. 1
  ISSN: 1103-5897
  DOI: 10.1080/11035897.2014.916475
• Calner M., Lehnert O., Wu R., Dahlqvist P., Joachimski M.:
  d13C chemostratigraphy in Lower-Middle Ordovician succession of Öland (Sweden) and the global significance of the MDICE
  In: Gff (2014), S. in press
  ISSN: 1103-5897
  DOI: 10.1080/11035897.2014.901409
• Kroger B., Hints L., Lehnert O., Mannik P., Joachimski M.:
  The early Katian (Late Ordovician) reefs near Saku, northern Estonia and the age of the Saku Member, Vasalemma Formation.
  In: Estonian Journal of Earth Sciences 63 (2014), S. 271-276
  ISSN: 1736-4728
  DOI: 10.3176/earth.2014.30
• Kröger B., Hints L., Lehnert O.:
  Age, facies and geometry of the Katian (Upper Ordovician) pelmatozoan-bryozoan-receptaculite reefs of the Vasalemma Formation, north Estonia
  In: Facies 60 (2014), S. 963-986
  ISSN: 0172-9179
  DOI: 10.1007/s10347-014-0410-8
  URL: https://link.springer.com/article/10.1007/s10347-014-0410-8
• Lehnert O., Meinhold G., Wu R., Calner M., Joachimski M.:
  d13C chemostratigraphy in the upper Tremadocian through lower Katian (Ordovician) carbonate succession of the Siljan district, central Sweden.
  In: Estonian Journal of Earth Sciences 63 (2014), S. 277-286
  ISSN: 1736-4728
  DOI: 10.3176/earth.2014.31

2013

• Arslan A., Meinhold G., Lehnert O.:
  Tectonic structures in the Stumsnäs 1 core from the southern Siljan Ring, central Sweden: Ordovician sediments sandwiched between Proterozoic basement slivers.
  In: Gff 135 (2013), S. 213-227
  ISSN: 1103-5897
  DOI: 10.1080/11035897.2013.809016
• Lehnert O., Meinhold G., Arslan A., Ebbestad JO., Calner M.:
  Ordovician stratigraphy and sedimentary facies of the Stumsnäs 1 core from the southern Siljan Ring, central Sweden.
  In: Gff 135 (2013), S. 204-212
  ISSN: 1103-5897
  DOI: 10.1080/11035897.2013.813582
• Lehnert O., Stouge S., Brandl P.:
  Conodont biostratigraphy in the Early to Middle Ordovician strata of the Oslobreen Group in Ny Friesland, Svalbard
  In: Zeitschrift der Deutschen Gesellschaft für Geowissenschaften 164 (2013), S. 149-172
  ISSN: 1860-1804
  DOI: 10.1127/1860-1804/2013/0003
• Pouille L., Delabroye A., Vandenbroucke TR., Calner M., Lehnert O., Vecoli M., Danelian T.:
  Chitinozoan biostratigraphy at the Late Ordovician GICE event in the Borenshult-1 Drillcore (Sweden).
  In: Review of Palaeobotany and Palynology (2013)
  ISSN: 0034-6667
  DOI: 10.1016/j.revpalbo.2013.05.007
  URL: https://www.sciencedirect.com/science/article/pii/S0034666713001036?via=ihub

2012

• Bergstroem SM., Lehnert O., Calner M., Joachimski M.:
  A new upper Middle Ordovician-Lower Silurian drillcore standard succession from Borenshult in Östergötland, southern Sweden: 2. Significance of δ 13C chemostratigraphy
  In: GFF 134 (2012), S. 39-63
  ISSN: 1103-5897
  DOI: 10.1080/11035897.2012.657231
• Calner M., Lehnert O., Jeppsson L.:
  New chemostratigraphic through the Middle Mulde Event interval (Silurian, Wenlock), Gotland, Sweden
  In: Gff 134 (2012), S. 65-67
  ISSN: 1103-5897
  DOI: 10.1080/11035897.2012.670015
• Gocke M., Lehnert O., Fryda J.:
  Facies development across the Late Silurian Lau Event based on temperate carbonates of the Prague Basin (Czech Republic)
  In: Facies 59 (2012), S. 611-630
  ISSN: 0172-9179
  DOI: 10.1007/s10347-012-0328-y
• Juhlin C., Sturkell E., Ebbestad JO., Lehnert O., Högström AES., Meinhold G.:
  A new interpretation of the sedimentary cover in the western Siljan Ring area, central Sweden, based on seismic data
  In: Tectonophysics 580 (2012), S. 88-98
  ISSN: 0040-1951
  DOI: 10.1016/j.tecto.2012.08.040
• Keller M., Cooper JD., Lehnert O.:
  Extended abstract - Sauk megasequence supersequences, southern Great Basin: Second-Order accomodation events in the southwestern Cordilleran margin plattform. In Derby, J.R., Fritz, R.D., Longacre, S., Morgan, W.A. & Sternbach, C.A.: The great American carbonate bank: The Geology and economic resources of the Cambrian-Ordovician Sauk megasequence of Laurentia.
  In: AAPG Memoir 98 (2012), S. 883a-389a
  ISSN: 0271-8529
• Lehnert O., Meinhold G., Bergström SM., Calner M., Ebbestad JO., Egenhoff S., Frisk A., Hannah JL., Högström AES., Huff WD., Juhlin C., Maletz J., Stein HJ., Sturkell E., Vandenbroucke TR.:
  New Ordovician-Silurian drill cores from the Siljan impact structure in central Sweden - an integral part of the Swedish Deep Drilling Program
  In: Gff 134 (2012), S. 87-98
  ISSN: 1103-5897
  DOI: 10.1080/11035897.2012.692707

2011

• Bergström SM., Calner M., Lehnert O., Noor A.:
  A new upper Middle Ordovician–Lower Silurian drillcore standard succession from Borenshult in Östergötland, southern Sweden: 1. Stratigraphical review with regional comparisons
  In: Gff 133 (2011), S. 149-171
  ISSN: 1103-5897
  DOI: 10.1080/11035897.2011.622049
• Buggisch W., Joachimski M., Lehnert O., Bergström SM., Repetski JE.:
  Did intense volcanism trigger the first Late Ordovician icehouse? REPLY.
  In: Geology 39 (2011), S. 238
  ISSN: 0091-7613
  DOI: 10.1130/G32139Y.1
• Meinhold G., Arslan A., Lehnert O., Stampfli GM.:
  Global mass wasting during the Middle Ordovician: Meteoritic trigger or plate-tectonic environment?
  In: Gondwana Research 19 (2011), S. 534-541
  ISSN: 1342-937X
  DOI: 10.1016/j.gr.2010.07.001

2010

• Buggisch W., Joachimski M., Lehnert O., Bergström SM., Repetski JE., Webers GF.:
  Did intense volcanism trigger the first Ordovician icehouse?
  In: Geology 38 (2010), S. 327-330
  ISSN: 0091-7613
  DOI: 10.1130/G30577.1
• Calner M., Lehnert O., Joachimski M.:
  Carbonate mud mounds, conglomerates and sea-level history in the Katian (Upper Ordovician) of central Sweden
  In: Facies 56 (2010), S. 157-172
  ISSN: 0172-9179
  DOI: 10.1007/s10347-009-0192-6
• Calner M., Lehnert O., Nolvak J.:
  Palaeokarst evidence for widespread regression and subaerial exposure in the middle Katian (Upper Ordovician) of Baltoscandia: significance for global climate.
  In: Palaeogeography, Palaeoclimatology, Palaeoecology 296 (2010), S. 235-247
  ISSN: 0031-0182
  DOI: 10.1016/j.palaeo.2009.11.028
• Keller M., Lehnert O.:
  Ordovician paleokarst, quartz sand and climate
  In: Palaeogeography, Palaeoclimatology, Palaeoecology 296 (2010), S. 297-309
  ISSN: 0031-0182
  DOI: 10.1016/j.palaeo.2010.02.015
• Lehnert O., Maennik P., Joachimski M., Calner M., Fryda J.:
  Paleoclimate perturbations before the early Sheinwoodian Glaciation: A trigger for extinctions during the Ireviken Event.
  In: Palaeogeography, Palaeoclimatology, Palaeoecology 296 (2010), S. 320-331
  ISSN: 0031-0182
  DOI: 10.1016/j.palaeo.2010.01.009
• Zigaite Z., Joachimski M., Lehnert O., Brazauskas A.:
  d18O compostion from conodont apatite indicates climate cooling during the Middle Pridoli
  In: Palaeogeography, Palaeoclimatology, Palaeoecology 294 (2010), S. 242-247
  ISSN: 0031-0182
  DOI: 10.1016/j.palaeo.2010.03.033

2008

• Harrison JC., Nowlan G., Lehnert O.:
  Thermal maturity of Cambrian to Devonian rocks of northeastern Ellesmere Island
  In: Bulletin of the Geological Survey of Canada (2008), S. 169-185
  ISSN: 0068-7626
  URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-72249110420&origin=inward
• Lee C., Lehnert O., Nowlan G.:
  Geology of northeast Ellesmere Island adjacent to Kane Basin and Kennedy Channel, Nunavut.
  In: Bulletin of the Geological Survey of Canada 592 (2008), S. 115-167
  ISSN: 0068-7626
• Meinhold G., Lehnert O., Reischmann T., Kostopoulos D., Matukov D., Sergeev S.:
  Provenance of Palaeozoic sediments during subduction of Palaeotethys: detrital zircon ages and the analysis of olistoliths from Chios Island, Greece.
  In: Palaeogeography, Palaeoclimatology, Palaeoecology 263 (2008), S. 71-91
  ISSN: 0031-0182
  DOI: 10.1016/j.palaeo.2008.02.013
• Servais T., Lehnert O., Li J., Mullins GL., Munnecke A., Nützel A., Vecoli M.:
  The Ordovician Biodiversification: revolution in the oceanic trophic chain
  In: Lethaia 41 (2008), S. 99-109
  ISSN: 0024-1164
  DOI: 10.1111/j.1502-3931.2008.00115.x
  URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1502-3931.2008.00115.x/abstract

2007

• Suttner T. J., Lehnert Oliver, Joachimski Michael, Buggisch Werner:
  Recognition of the Boda event in the Pin Formation of northern India based on new d13C and conodont data.
  In: Acta Palaeontologica Sinica 46 (2007), S. 466-470
  ISSN: 0001-6616
• Egenhoff S., Weber B., Lehnert O., Maletz J.:
  Biostratigraphic precision of the Cruziana rugosa group: a study from the Ordovician succession of southern and central Bolivia.
  In: Geological Magazine 144 (2007), S. 289–303
  ISSN: 0016-7568
  DOI: 10.1017/S0016756807003093
• Lehnert O., Eriksson MJ., Calner M., Joachimski M., Buggisch W.:
  Concurrent sedimentary and isotopic indications for global climatic cooling in the Late Silurian
  In: Acta Palaeontologica Sinica 46 (2007), S. 249-255
  ISSN: 0001-6616
• Lehnert O., Frýda J., Buggisch W., Munnecke A., Nützel A., Křiž J., Manda Š., Lehnert O.:
  δ13C records across the late Silurian Lau event: New data from middle palaeo-latitudes of northern peri-Gondwana (Prague Basin, Czech Republic)
  In: Palaeogeography, Palaeoclimatology, Palaeoecology 245 (2007), S. 227-244
  ISSN: 0031-0182
  DOI: 10.1016/j.palaeo.2006.02.022
  URL: http://www.sciencedirect.com/science/article/pii/S0031018206003464
• Lehnert O., Stouge S., Joachimski M., Buggisch W.:
  d18O record from conodont apatite across the Lower-Middle Ordovician boundary on the Yangtze platform (Western Hubei, South China).
  In: Acta Palaeontologica Sinica 46 (2007), S. 256-261
  ISSN: 0001-6616
• Lehnert O., Vecoli M., Servais T., Nützel A.:
  Did plankton evolution trigger the Ordovician diversifications?
  In: Acta Palaeontologica Sinica 46 (2007), S. 262-268
  ISSN: 0001-6616
• Nützel A., Lehnert O., Fryda J.:
  Origin of planktotrophy - evidence from early molluscs: a response to Freeman and Lundelius.
  In: Evolution & Development 9 (2007), S. 313-318.
  ISSN: 1520-541X

2006

• Lehnert O., Kraft P.:
  Manitouscolex – a new palaescolecidan genus from the Lower Ordovician of Colorado
  In: Journal of Paleontology 80 (2006), S. 386-392
  ISSN: 0022-3360
  DOI: 10.1666/0022-3360(2006)080[0386:MANPGF]2.0.CO;2
  URL: https://www.cambridge.org/core/journals/journal-of-paleontology/article/manitouscolex-a-new-palaeoscolecidan-genus-from-the-lower-ordovician-of-colorado/736A8690C94FBD3AC0318C1638138D02
• Nützel A., Lehnert O., Fryda J.:
  Origin of planktotrophy - evidence from early molluscs
  In: Evolution & Development 8 (2006), S. 325-330
  ISSN: 1520-541X
  DOI: 10.1111/j.1525-142X.2006.00105.x
  URL: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1525-142X.2006.00105.x

2005

• Lehnert O., Miller JF., Leslie SA., Repetski JE., Ethington RL.:
  Cambro-Ordovician sea level fluctuations and sequence boundaries: the missing record and the evolution of new taxa
  In: Special Papers in Palaeontology Series (2005), S. 117-134
  ISSN: 0038-6804
• Leslie SA., Lehnert O.:
  Middle Ordovician sea-level changes and the evolution of the Ordovician conodont genus Cahabagnathus Bergström, 1983.
  In: Journal of Paleontology 79 (2005), S. 1131-1142
  ISSN: 0022-3360
  DOI: 10.1666/0022-3360(2005)079[1131:MOCSCA]2.0.CO;2

2004

• Lehnert O., Nowlan G., Lee C.:
  Die Bedeutung der Conodontenstratigraphie in der Klastenforschung am Beispiel der Tertiärabfolgen von Ellesmere Island (kanadische Arktis).
  In: Archiv für Geschiebekunde 8/12 (2004), S. 599-618
  ISSN: 0936-2967
• Vanguestaine M., Breuer P., Lehnert O.:
  Discovery of an Early Ordovician conodont fauna in the Salm Group of the Stavelot Inlier, Belgium
  In: Bulletin de l'Institut Royal des Sciences Naturelles de Belqique, Sciences de la Terre 74 (2004), S. 39-48
  ISSN: 0374-6291

2003

• Buggisch W., Fryda J., Lehnert O., Manda Š.:
  A first report of the Ludlow Lau Event from the Prague Basin (Barrandian, Czech Republic)
  In: Serie Correlación Geológica (2003), S. 673-768
  ISSN: 1514-4186
• Buggisch W., Lehnert O., Keller M.:
  Carbon isotope record of Late Cambrian to Early Ordovician carbonates of the Argentine Precordillera
  In: Palaeogeography, Palaeoclimatology, Palaeoecology (2003), S. 357-373
  ISSN: 0031-0182
  DOI: 10.1016/S0031-0182(03)00365-1
• Lehnert O., Cooper JD.:
  Dynamic evolution of the Late Cambrian-Ordovician rimmed shelf margin of eastern California
  In: Serie Correlación Geológica 17 (2003), S. 413-419
  ISSN: 1514-4186

2000

• Buggisch W., Bordonaro O., Cañas F., von Gosen W., Keller M., Krumm S., Lehnert O., Loske W.:
  The sedimentary and structural evolution of the Argentine Precordillera - the key of the history of an exotic terrane.
  In: Zeitschrift für Angewandte Geologie SH1 (2000), S. 355-362
  ISSN: 0044-2259
• Ethington R L, Lehnert O, Repetski, J E:
  Stiptognathus n. gen. (Conodonta; Ibexian, Lower Ordovician), and the apparatus of Stiptognathus borealis (Repetski, 1982)
  In: Journal of Paleontology 74 (2000), S. 92-100
  ISSN: 0022-3360

1999

• Holmer L E, Popov, L, Lehnert O:
  Cambrian phosphatic brachiopods from the Precordillera of western Argentina
  In: GFF 121 (1999), S. 227-242
  ISSN: 1103-5897
  DOI: 10.1080/11035899901213227
• Kraft P., Lehnert O., Frýda J.:
  Titerina, a living fossil in the Ordovician: A young protoconodont (?) and the oldest chaetognath animal
  In: Acta Universitatis Carolinae - Geologica 43 (1999), S. 451-454
  ISSN: 0001-7132
  URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-0033304777&origin=inward
• Lehnert O., Bergstroem SM., Benedetto JL., Vaccari E.:
  First record of Lower Silurian conodonts from South America: biostratigraphic and paleobiogeographic implications of Llandovery conodonts in the Precordillera of Argentina
  In: Geological Magazine 136 (1999), S. 119-131
  ISSN: 0016-7568
• Lehnert O., Bergstroem SM., Keller M., Bordonaro O.:
  Middle Ordovician (Llandeilian-Caradocian) conodonts from the San Rafael region, west-central Argentina: Biostratigraphic, biogeographic and paleogeographic implications
  In: Bollettino Della Societa Paleontologica Italiana 37 (1999), S. 199-214
  ISSN: 0375-7633
• Lehnert O., Hinz-Schallreuter I., Krüger HH.:
  Paläozoische Conodontenfaunen aus eiszeitlichen Geschieben Norddeutschlands (I): Eine Mittelordoviz-Fauna aus Rügen
  In: Natur und Mensch (1999), S. 29-44
  ISSN: 0077-6025
• Lehnert O., Miller JF., Cochrane K.:
  Palaeobotryllus and friends: Cambro-Ordovician record of probable ascidian tunicates
  In: Acta Universitatis Carolinae - Geologica 43 (1999), S. 447-450
  ISSN: 0001-7132
  URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-0033305145&origin=inward
• Leslie SA., Lehnert O.:
  New insight into the phylogeny and paleogeography of Cahabagnathus (Conodonta)
  In: Acta Universitatis Carolinae - Geologica 43 (1999), S. 443-446
  ISSN: 0001-7132
  URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-0033304778&origin=inward
• Talent J., Gaetani M., Mawson R., Molloy PD., Conaghan PJ., Lehnert O., Trotter JA.:
  Early Ordovician and Devonian conodonts from the Western Karakorum and Hindu Kush, northernmost Pakistan. - Revista Italiana di Paleontologia e Stratigrafia, 105 (2): 201-230; Mailand.
  In: Rivista Italiana Di Paleontologia E Stratigrafia 105 (1999), S. 201-230
  ISSN: 0035-6883

1998

• Keller M., Lehnert O.:
  The Rio Sassito sedimentary succession (Ordovician): A pinpoint in the geodynamic evolution of the Argentine Precordillera
  In: Geologische Rundschau 87 (1998), S. 326-344
  ISSN: 0016-7835
  DOI: 10.1007/s005310050213
• Lehnert O., Keller M., Bordonaro O.:
  Early Ordovician conodonts from the southern Cuyania terrane (Mendoza Province, Argentina)
  In: Palaeontologia Polonica 58 (1998), S. 45-63
  ISSN: 0078-8562

1997

• Heuse T., Lehnert O., Kraft P.:
  Organic-walled microfossils incertae sedis from the Ordovician of the Argentine Precordillera and Bohemia
  In: Acta Universitatis Carolinae - Geologica 40 (1997), S. 425-439
  ISSN: 0001-7132
  URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-0030317995&origin=inward
• Jaanussen D., Lehnert O.:
  Cambro-Ordovician sponge spicule assemblages in the Ordovician of the Argentine Precordillera and paleoenvironmental ties
  In: Neues Jahrbuch für Geologie und Paläontologie-Abhandlungen 204 (1997), S. 221-246
  ISSN: 0077-7749
  URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-0000155795&origin=inward
• Lehnert O., Miller JF., Repetski JE.:
  Paleogeographic significance of Clavohamulus hintzei MILLER (Conodonta) and other Ibexian conodonts in an early Paleozoic carbonate platform facies of the Argentine Precordillera
  In: Geological Society of America Bulletin 109 (1997), S. 429-443
  ISSN: 0016-7606

1995

• Lehnert O.:
  Ordovician conodonts of the West Argentine Precordillera: the significance for stratigraphy and palaeogeography Ordovizische Conodonten aus der Prakordillere Westargentiniens: ihre Bedeutung fur Stratigraphie und Palaogeographie
  In: Erlanger Geologische Abhandlungen 125 (1995), S. 1-193
  ISSN: 0071-1160
  URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-0029513331&origin=inward
• von Gosen W., Buggisch W., Lehnert O.:
  Evolution of the Early Paleozoic mélange at the eastern margin of the Argentine Precordillera
  In: Journal of South American Earth Sciences 8 (1995), S. 405-424
  ISSN: 0895-9811
  DOI: 10.1016/0895-9811(95)00022-8

1994

• Keller M, Cañas F, Lehnert O, Vaccari, E:
  The Upper Cambrian and Lower Ordovician of the Precordillera (Western Argentina): Some stratigraphic reconsiderations
  In: Newsletters on Stratigraphy 31 (1994), S. 115-132
  ISSN: 0078-0421
• Lehnert, O:
  A Cordylodus proavus fauna from West Central Argentina (Los Sombreros Fm., Sierra del Tontal, San Juan Province)
  In: Zentralblatt für Geologie und Paläontologie, Teil I, Geologie (1994), S. 245-262
  ISSN: 0340-5109
• Lehnert O., Keller M.:
  The Conodont Record of the Argentine Precordillera: Problems and Possibilities
  In: Zentralblatt für Geologie und Paläontologie, Teil I, Geologie 1993 (1994), S. 231-244
  ISSN: 0340-5109

1993

• Keller M., Eberlein S., Lehnert O.:
  Sedimentology of Middle Ordovician carbonates in the Argentine Precordillera: Evidence of regional relative sea-level changes
  In: Geologische Rundschau 82 (1993), S. 362-377
  ISSN: 0016-7835
  DOI: 10.1007/BF00191838
• Lehnert O.:
  Bioestratigrafía de los conodontes Arenigianos de La Formación San Juan en la localidad de Niquivil (Precordillera Sanjuanina, Argentina) y su correlación intercontinental
  In: Revista Espanola de Paleontologia 8 (1993), S. 153-164
  ISSN: 0213-6937
• Lehnert O., Keller M.:
  Posición estratigráfica de los arrecifes Arenigianos en la Precordillera Argentina
  In: Documents des Laboratoires de Géologie de Lyon 125 (1993), S. 263-275
  ISSN: 0750-6635