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 2023: Special issue of the journal “FOSSILIEN”

Collecting fossils from erratic boulders derived by the glacial drift is the most family-friendly way to experience Earth history. Especially at the coasts, children can also find loose fossils in a relaxed way and almost everywhere, including the classics “devil’s fingers” and sea urchins in flintstone preservation. In addition, boulder fossils offer a unique chance to find evidence of almost the entire history of life since the Cambrian, as the ice-age glaciers sent us a colourful variety of different fossils from Scandinavia. This special issue covers the entire range of possible discoveries, from “once i a century finds” like the ancient, mysterious stump-footed Xenusion to Germany’s second-oldest bird fossil and the common sea urchin. Particularly beautiful specimens are illustrated; several views of the same piece make this special issue with its generous graphic design an aesthetic pleasure as well. about 80 p., throughout colour ill., 21 x 28 cm. Available October 2023.

Recently published journal articles

• 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.
• 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
• Baudouin, C., Delanoy, G., Lehmann, J., Frau, C., Gonnet, R., Vermeulen, J., 2021. The Cretaceous nautiloid genus Anglonautilus Spath, 1927, in France. – Carnets de Géologie/Notebooks on Geology 21(12), 235-263. DOI: 10.2110/carnets.2021.2112
• Bischof, E.A., Schlüter, N., Korn, D., Lehmann, J., 2021. Ontogeny of highly variable ceratitid ammonoids from the Anisian (Middle Triassic). – PeerJ(9:e10931), 1-28. DOI: 10.7717/peerj.10931
• Jattiot, R., Lehmann, J., Latutrie, B., Vuarin, P., Tajika, A., Vennin, E., 2021. Reappraisal of the latest Albian (Mortoniceras fallax Zone) cephalopod fauna from the classical Salazac locality (Gard, southeastern France). – Geobios. DOI: 10.1016/j.geobios.2021.01.001
• Lehmann, J., Simpson, M. I., Bayliss, H. M., 2020. A first ammonite fauna from the Walpenites horizon of the upper Aptian (Lower Cretaceous), Isle of Wight, southern England. – Proceedings of the Geologists’ Association 131, 321-333. DOI: 10.1016/j.pgeola.2019.01.006
• Lehmann, J., Bulot, L. G., 2020. A Dufrenoyia (Ammonoidea, Deshayesitidae) fauna from Germany: Evidence for D. furcata Zone deposits at the lower–upper Aptian boundary. – Cretaceous Research 116. DOI: 10.1016/j.cretres.2020.104546
• Cawley, J. J., Lehmann, J., Wiese, F., Kriwet, J., 2020. Njoerdichthys dyckerhoffi gen. et sp. nov. (Pycnodontiformes, lower Turonian) northward migration caused by the Cretaceous Thermal Maximum. – Cretaceous Research 116. DOI: 10.1016/j.cretres.2020.104590
• Bischof, E. A., Lehmann, J., 2020. Ontogenetic analysis of Anisian (Middle Triassic) ptychitid ammonoids from Nevada, USA. – Journal of Paleontology 94, 829-851. DOI: 10.1017/jpa.2020.25
• Lehmann, J., Seibertz, E., Spaeth, C., Bulot, L. G., 2020. Ammonite stratigraphy and the belemnite genus Hibolithes in the higher Serdj Formation (Aptian–Albian boundary interval) in north central Tunisia. – Zeitschrift der Deutschen Gesellschaft für Geowissenschaften 171(2), 135-148. DOI: 10.1127/zdgg/2020/0210
• Rakociński, M., Zatoń, M., Marynowski, L., Gedl, P., Lehmann, J., 2019. Reply to comment on the paper of Rakociński et al. „Redox conditions, productivity, and volcanic input during deposition of uppermost Jurassic and Lower Cretaceous organic-rich siltstones in Spitsbergen, Norway [Cretaceous Research, 89 (2018): 126-147]. – Cretaceous Research 96, 244. DOI: 10.1016/j.cretres.2018.10.014
• Hoffmann, R., Riechelmann, S., Ritterbush, K.A., Koelen, J., Lübke, N., Joachimski, M.M., Lehmann, J., Immenhauser, A., 2019. A novel multiproxy approach to reconstruct the paleoecology of extinct cephalopods. – Gondwana Research 67, 64-81. DOI: 10.1016/j.gr.2018.10.011
• Lehmann, J., Mosavinia, A., Wilmsen, M., 2019. Parahoplitid ammonites and narrowing down the Aptian/Albian boundary interval in northern Iran. – Cretaceous Research, 94, 207-228. DOI: 10.1016/j.cretres.2018.10.004

Recently published journal articles non review

• 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.
• Lehmann, J., 2021. Die Asphaltsümpfe von Los Angeles – ein Fenster in die Lebewelt des Eiszeitalters. – Fossilien 38(6), 52-61.
• Kutscher, M., Lehmann, J., 2021. Nachruf auf Werner Beckert (1938-2021). – Geschiebekunde aktuell 37(2), 62-64.
• Lehmann, J., 2021. Fischsaurier-Knochen und der Kimmeridge Clay. – Fossilien 38(2), 24-29.
• Lehmann, J., 2021. Ammoniten aus dem Cenomanium von Madagaskar. – Fossilien 38(1), 52-53.
• Lehmann, J., Bach, W., 2020. Fossilien aus der Asche – Organismenvielfalt im Schalstein. – Fossilien, 37(5), 56-60.
• Lehmann, J., 2020. Sind moderne Korallenriffe ein Modellfall für die Riffe des Devons? – Fossilien, 37(5), 40-47.
• De Vleeschouwer, D., Lehmann, J., 2020. Erdumlaufbahn und Klima im Devon. – Fossilien, 37(5), 26-31.
• Lehmann, J., 2020. Jurassische Trigonien – ein Lehrbuch-Beispiel für Fossilerhaltung. – Fossilien, 37(4), 52-53.
• Lehmann, J., 2019. Encrinus liliiformis – a crinoid from the Triassic that made a career for itself. – Deposits Magazine, 59, 12-14.