Prof. Dr. Jens Lehmann

Contact:
Geosciences Collection
University of Bremen – Faculty 5 (Geosciences)
Building GEO I, Room 5040
Klagenfurter Strasse 4
28359 Bremen
Germany
Tel.: +49-(0)421-218-65016
Fax: +49-(0)421-218-98 65016
jens.lehmann@uni-bremen.de

Prof. Dr. Jens Lehmann is responsible for the scientific handling of the research collection and for research about a wide choice of specimens and various geological time slices. Thus, a comprehensive networking with scientist from Germany and abroad is a matter of course. The transfer of scientific knowledge into the public is intimately connected, as demonstrated by numerous exhibition projects, including other European countries, and almost 100 public talks for the public. Interested layman might consult Prof. Lehmann to know more about their finds, in case they want to donate specimens to the collection and a far as for assistance for own scientific work. The Geosciences Collection is an active partner in the dialogue between research and society, “Citizen Science” is applied in all individual aspects. This commitment is also the reason for the cooperation with the Quelle & Meyer publishing house and in particular with “Fossilien. Journal für Erdgeschichte” – a journal for which he is an advisory scientist. The research focus of Prof. Lehmann is the reconstruction of the palaeoenvironment, diversity of organisms and ammonoids. These topics are addressed with special focus on the Mesozoic. He is also self dependent in acquiring third-party funds and is coordinating several scientific projects.

New publication by Jens Lehmann in October 2025: Special issue of the journal “FOSSILIEN”

A 96-page issue on the geology and palaeontology of the island of Bornholm has recently been published by Quelle & Meyer. The authors, Jochen Kuss (former professor of geochronology at Bremen) and Jens Lehmann, provide an overview of the fascinating geological history of Bornholm – from the oldest rocks in Scandinavia to the fossils of the Cretaceous period. Richly illustrated, the issue serves as a comprehensive guide for both specialists and nature enthusiasts, inviting readers to rediscover the “rock island” of the Baltic Sea from a geological perspective. Approx. 96 pages, fully illustrated in color, softcover, 21 × 28 cm. Available since October 2025 from Humanitas

Recently published journal articles

Klein, N., Lehmann, J., Heijne, J., Li, Q., Blouet, J.-P., Winkelhorst, H., Sander, M. P., 2025. Primary coarse cancellous bone in Grippia longirostris and another ichthyosauriform from the Lower Triassic of Svalbard. – Lethaia 58(4), 1-11. DOI: 10.18261/let.58.4.8.
Korn, D., Brayard, A., Lehmann, J., Page, K. N., 2025. Ammonoids: the ultimate in biostratigraphy. – Newsletters on Stratigraphy. DOI: 10.1127/nos/2025/0872.
Lehmann, J., Küchelmann, H.C., Juhl, F., Mutterlose, J., 2025. Fossil brachiopods from the Roman site on Mogador Island (Essaouira, Morocco): Implications for past exchange of products. – Journal of Island and Coastal Archaeology. DOI: 10.1080/15564894.2025.2485939
Klug, C., Pohle, A., Bolliger, T., Hagdorn, H., Lehmann, J., 2025. Taphonomic and reworking processes isolating cephalopod septa and chamber fillings. – Lethaia, 1-18. DOI: 10.18261/let.58.2.1
Cadena, E.-A., Bustos, J., Lehmann, J., 2025. Valanginian and Hauterivian bochianitid ammonoids from the Rosa Blanca Formation of Colombia: Palaeobiogeographic implications. – Cretaceous Research, 106094. DOI: 10.1016/j.cretres.2025.106094.
Lehmann, J., Aly, M. F., 2024. Cheloniceratinae Spath, 1923 (Ammonoidea, Douvilleiceratidae) in the upper Aptian (Lower Cretaceous) of North Sinai, Egypt. – Annales de Paléontologie, 102688. DOI: 10.1016/j.annpal.2024.102688.
Lehmann, J., Bayliss, H.M., 2024. Additions to the subfamily Acanthohoplitinae from the British Isles, including the first verifiable record of Acanthohoplites (Lower Cretaceous, upper Aptian). – Cretaceous Research, 105921. DOI: 0.1016/j.cretres.2024.105921.
Lehmann, J., Bornemann, A., Jattiot, R., Nohra, R., Resch, U., 2024. Age constraint of the Cenomanian (Late Cretaceous) Fossillagerstätte of Hjoûla (Lebanon) based on ammonites. – Newsletters on Stratigraphy 57 (2), 203-223. DOI: 10.1127/nos/2024/0804.
Szives, O., Moreno-Bedmar, J.A., Aguirre-Urreta, B., Company, M., Frau, C., López-Horgue, M., Pictet, A., Ploch, I., Salazar, C., Barragán, R., Latil, J.-L., Lehmann, J., Robert, E., Reboulet, S., 2024. Report on the 7th International Meeting of the IUGS Lower Cretaceous Ammonite Working Group, the Kilian Group (Warsaw, Poland, 21st August 2022): State of the art on the current Standard Ammonite Zonation of the Western Tethyan Mediterranean Province. – Cretaceous Research 153, 105716. DOI: 10.1016/j.cretres.2023.105716.
Klug, C., Stevens, K., Hoffmann, R., Zatoń, M., Clements, T., Košťák, M., Weis, R., De Baets, K., Lehmann, J., Vinther, J., Fuchs, D., 2023. Revisiting the identification of Syllipsimopodi bideni and timing of the decabrachian-octobrachian divergence. – Nature Communications 14(1), 8094. DOI: 10.1038/s41467-023-42842-x
Jattiot, R., Lehmann, J., Kruta, I., Rouget, I., 2023. Mature modifications and sexual dimorphism in Turrilitidae (heteromorph ammonites): Contribution of remarkable Mariella bergeri specimens (upper Albian, southeastern France). – Cretaceous Research 151, 105651. DOI: 10.1016/j.cretres.2023.105651
Szives, O., Latil, J.-L., Moreno-Bedmar, J. A., Lehmann, J., Robert, E., Owen, H. G., 2023. Critical revision and new proposals on the Aptian–Albian zonation of the standard Mediterranean ammonite zonal scheme. – Newsletters on Stratigraphy 56(4), 423-456. DOI: 10.1127/nos/2023/0753.
Jattiot, R., Monnet, C., Lehmann, J., Owen, H.G., 2023. Quantitative biochronology by unitary associations of late Albian ammonites from Europe and their biodiversity. – Newsletters on Stratigraphy 56(4), 485-505. DOI: 10.1127/nos/2023/0773
Lehmann, J., Pickford, M., Desmares, D., 2022. The Wanderfeld IV Cretaceous occurrence near Bogenfels, Namibia: the ammonite Placenticeras and its associated bivalve fauna. – Communications of the Geological Survey of Namibia 25: 32-55.
Bischof, E. A., Schlüter, N., Lehmann, J., 2022. Geometric morphometric analysis of morphologic disparity, intraspecific variation and ontogenetic allometry of beyrichitine ammonoids. – PLoS ONE 17:(2) e0263524. DOI: 10.1371/journal.pone.0263524
Jattiot, R., Lehmann, J., Latutrie, B., Tajika, A., Vennin, E., Vuarin, P., Brayard, A., Fara, E., Trincal, V., 2022. Upper upper Albian (Mortoniceras rostratum Zone) cephalopods from Clansayes (Drôme, south-eastern France). – Acta Geologica Polonica. DOI: 10.24425/agp.2021.139308
Lehmann, J., Bayliss, H. M., 2022. The heteromorph ammonite Tropaeum (Tropaeum) evolutum sp. nov. from the Hythe Formation, Lower Greensand Group (basal upper Aptian, Lower Cretaceous) of Maidstone, Kent, UK. – Cretaceous Research 105110. DOI: 10.1016/j.cretres.2021.105110

Recently published journal articles non review

Lehmann, J., 2026. Geologie und Paläontologie im „Müritzeum“ in Waren. – Fossilien 43(1), 47-53.
Lehmann, J., 2025. Fossilien von Bornholm – das Danekræ-Gesetz und der Schutz von Lokalitäten. – Fossilien 42(5), 54-57.
Lehmann, J., 2025. Geologie und Fossilien am Katharinenhof auf Fehmarn – einst und jetzt. – Fossilien 42(6), 36-45.
Lehmann, J., 2025. NaturBornholm – Museum mit Landschaft und Fenster zur Erdgeschichte. – Fossilien 42(6), 46-52.
Lehmann, J., 2025. Das Kambrium – erstes Leben auf Bornholm. In: Fossilien-Sonderheft: Eine geologische Perle in der Ostsee, pp. 22-39. Wiebelsheim: Quelle & Meyer.
Lehmann, J., 2025. Das Ordovizium aus Bornholm – Artenvielfalt im Meer. In: Fossilien-Sonderheft: Eine geologische Perle in der Ostsee, pp. 40-52. Wiebelsheim: Quelle & Meyer.
Lehmann, J., 2025. Die Jurazeit: Das Meer kehrt zurück nach Bornholm. In: Fossilien-Sonderheft: Eine geologische Perle in der Ostsee, pp. 68-79. Wiebelsheim: Quelle & Meyer.
Lehmann, J., 2025. Die Trias: Beginn der Dinosaurierzeit, Festland auf Bornholm. In: Fossilien-Sonderheft: Eine geologische Perle in der Ostsee, pp. 62-67. Wiebelsheim: Quelle & Meyer.
Lehmann, J., 2025. Kohle, Korallen und Katastrophen: Silur bis Perm. In: Fossilien-Sonderheft: Eine geologische Perle in der Ostsee, pp. 53-61. Wiebelsheim: Quelle & Meyer.
Lehmann, J., 2025. Zwischen Festland und Meer: Die Kreidezeit auf Bornholm. In: Fossilien-Sonderheft: Eine geologische Perle in der Ostsee, pp. 80-96. Wiebelsheim: Quelle & Meyer.
Lehmann, J., 2025. Neue Beschilderung für den Usedomer Gesteinsgarten. – Fossilien 42(3), 63.
Lehmann, J., 2025. Überraschungsfund: Verschollene Großammoniten zurückgekehrt! – Fossilien 42(3), 62.
Lehmann, J., 2025. Das Museu Balear de Ciènces Naturals auf Mallorca. – Fossilien 42(3), 54-61.
Lehmann, J., 2025. Konglomerate und fossile Seeigel – unterwegs im Tramuntana-Gebirge von Mallorca. – Fossilien 42(3), 38-43.
Lehmann, J., 2025. Åsen – eine Fossilfundstelle in der schwedischen Kreide. – Fossilien 42(2), 36-46.
Lehmann, J., 2024. „Tanz auf dem Vulkan“ – Fossilien aus dem Miozän Madeiras. – Fossilien 41(2), 36-51.
Lehmann, J., 2024. Neueröffnung: die FossilienGrube in Twistringen. – Fossilien 41(4), 36-51.
Lehmann, J., 2024. Die Messe in Sainte-Marie aux-Mines 2024. – Fossilien 41(6), 61.
Lehmann, J., 2024. Der Usedomer Gesteinsgarten – ein Ausflugsziel für Geschiebefreunde. – Fossilien 41(6), 18-25.
Lehmann, J., 2024. Lias-Ammoniten aus dem Geschiebe des Münsterländer KIessandzugs – die Sammlung von Herman Akkerman. – Der Steinkern(56), 12-26.
Lehmann, J., 2024. Ungewöhnliches Echsenfossil aus der Green River Formation – es „fällt wie Schuppen von den Augen“. – Fossilien 41(1), 37-40.
Lehmann, J., 2023. Meteora – Geologie eines UNESCO-Welterbes. – Fossilien 40(6), 4-15.
Lehmann, J., 2023. „Turritella-Achat” aus der Green River Formation. – Fossilien 40(5), 58-61.
Lehmann, J., 2023. Aufschluss Kellwassertal in schlechtem Zustand. GMit. Geowissenschaftliche Mitteilungen 91, 106-107.
Lehmann, J., Lehmann, L. B., 2023. Torfstiche als anthropogene Wildtierfallen? – Knochenansammlungen des Damhirsches (Dama dama) in Niedersachsen. – Abhandlungen des Naturwissenschaftlichen Vereins zu Bremen 48 (1), 21-26.
Lehmann, J., 2023. Das Naturkundemuseum in Mailand: Ein Kleinod der Paläontologie. – Fossilien 40(1), 4-11.
Lehmann, J., 2023. Die Messe in Sainte-Marie-aux-Mines: Immer wieder einen Besuch wert. – Fossilien 40(1), 58-61.
Lehmann, J., 2022. The art of fossil preparation – a silent revolution in palaeontology. – Naturevolve 12: 17.
Lehmann, J., 2022. Die Schotter der „Ur-Gera“ von Erfurt – vielfältige Kaltzeitgeologie. – Fossilien 39(3), 56-60.
Lehmann, J., 2022. Die verräterischen Fossilien der Votivkapelle des Märchenkönigs. – Fossilien 39(3), 4-9.
Lehmann, J., 2022. Das Odby Klint in Jütland – mehr als 60 Millionen Jahre Erdgeschichte. – Fossilien 39(2), 16-23.