Dr. Romain Jattiot

Dr. Romain Jattiot

Geosciences Collection
University of Bremen – Faculty 5 (Geosciences)
Building MARUM I, Room 0030
Leobener Strasse 8
28359 Bremen
Tel.: +49-(0)421-218-65693

Romain is an invertebrate palaeontologist with expertise on taxonomy, biostratigraphy, palaeobiology and evolution of fossil cephalopods. He is currently working at the Fachbereich 05 – Geowissenschaften, Universität Bremen in a Postdoc project: “Uppermost Albian quantitative biochronology: a prerequisite for understanding couplings between major palaeocological and environmental changes”.

Project goal
The Albian, which is the youngest chronostratigraphical stage of the Lower Cretaceous series (~110 Ma), is generally considered to be followed by the Cenomanian stage. However, in the 19th century, a proposal was made to insert a supplemental chronostratigraphical division between the Albian and the Cenomanian. Termed the Vraconnian, this stage was based on a distinctive ammonite (Order Ammonoidea) fauna found in western Switzerland. Here, the prime objective is to reassess uppermost Albian biostratigraphy by means of the Unitary Associations method, which has been rarely exploited in the Cretaceous. This method will be applied for the first time to obtain a soundly reliable quantitative uppermost Albian biostratigraphical scheme. To achieve this end, a comprehensive upper Albian dataset will be compiled, with its major part consisting of detailed previously published biostratigraphical data for ammonites, planktonic foraminifera and calcareous nannofossils from selected key sections, most of which are very fossiliferous and lack large hiatuses. Beforehand this extensive study, taxonomical and biostratigraphical work will be performed on upper Albian ammonites from two localities in southeastern France, hence generating new data for the overall Unitary Associations analysis.

Curriculum vitae
Nov 2019-present –> Alexander von Humboldt Postdoctoral Fellow, Universität Bremen, Fachbereich 05 – Geowissenschaften (Germany)
Jan 2019-Apr 2019 –> ATER (Teaching assistant), University de Bourgogne-Franche-Comté, Laboratoire Biogéosciences (France)
Sep 2013-Dec 2017 –> PhD Student, University of Zürich, Institut für Paläontologie und Paläontologisches Museum (Switzerland)

Peer-reviewed articles, first-authored

  • Jattiot R., Bucher H. & Brayard A. Smithian (Early Triassic) ammonoid faunas from Exotic Blocks from Timor: taxonomy and biochronology. Palaeontographica Abteilung A, in press.
  • Jattiot R., Gris A. & Trincal V. New occurrence of the middle Toarcian “Telodactyliteseucosmus (Lippi Boncambi, 1947) (Ammonitina) from the NW European realm, and introduction of a new genus. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 295 (1): 1-8.
  • Jattiot R., Fara E., Brayard A., Urdy S. & Goudemand N. Learning from beautiful monsters: phylogenetic and morphogenetic implications of left-right asymmetry in ammonoid shells. BMC Evolutionary Biology, 19 (210): 1-13.
  • Jattiot R., Brayard A., Bucher H., Vennin E., Caravaca G., Jenks J. F., Bylund K. G. & Escarguel G. 2018. Palaeobiogeographical distribution of Smithian (Early Triassic) ammonoid faunas within the western USA basin and its controlling parameters. Palaeontology, 61 (6): 881-904.
  • Jattiot R., Rulleau L. & Latutrie B. 2017. Nouvelles données sur la paléobiogéographie des genres Septimaniceras Fauré, 2002 et Crassiceras Merla, 1932 (Ammonitina) du Toarcien moyen. Revue de Paléobiologie, 36 (1): 169-177.
  • Jattiot R., Bucher H., Brayard A., Brosse M., Jenks J. F. & Bylund K. G. 2017. Smithian ammonoid faunas from northeastern Nevada: implications for Early Triassic biostratigraphy and correlation within the western USA basin. Palaeontographica Abteilung A, 309 (1-4): 1-89.
  • Jattiot R., Fara E., Brayard A. & Vennin E. 2016. Revised stratigraphic range of the Toarcian ammonite genus Porpoceras Buckman, 1911. Geodiversitas, 38 (4): 505-513.
  • Jattiot R., Bucher H., Brayard A., Monnet C., Jenks J. F. & Hautmann M. 2016. Revision of the genus Anasibirites Mojsisovics (Ammonoidea): an iconic and cosmopolitan taxon of the late Smithian (Early Triassic) extinction. Papers in Palaeontology, 2 (1): 155-188.
  • Jattiot R., Brayard A., Fara E. & Charbonnier S. 2015. Gladius-bearing coleoids from the Upper Cretaceous Lebanese Lagerstätten: diversity, morphology, and phylogenetic implications. Journal of Paleontology, 89 (1): 148-167.
  • Jattiot R., Bechly G., Garrouste R. & Nel A. 2012. An enigmatic Nepoidea from the Lower Cretaceous of Brazil (Hemiptera: Heteroptera). Cretaceous Research, 34: 344-347.
  • Jattiot R., Krogmann L. & Nel A. 2011. Revision of Prosyntexis from the Lower Cretaceous Crato Formation of Brazil (Hymenoptera: Sepulcidae: Trematothoracinae). Zootaxa, 3058: 55-62.

Peer-reviewed articles, Co-authored

  • Rulleau L. & Jattiot R. 2019. Révision de la sous-famille Mercaticeratinae Guex, 1973 (Ammonitina, Hildoceratidae) du Toarcien moyen. Revue de Paléobiologie, 38 (1): 19-38.
  • Romano C., Jenks J. F., Jattiot R., Scheyer T., Bylund K. G. & Bucher H. 2017. Marine Early Triassic Actinopterygii from Elko County (Nevada, USA): implications for the Smithian equatorial vertebrate eclipse. Journal of Paleontology, 91 (5): 1025-1046.
  • Piazza V., Hammer O. & Jattiot R. 2017. New late Smithian (Early Triassic) ammonoids from the Lusitaniadalen Member, Vikinghogda Formation, Svalbard. Norwegian Journal of Geology, 97 (2): 105-117.
  • Tajika A., Kürsteiner P., Pictet A., Lehmann J., Tschanz K., Jattiot R. & Klug C. 2017. Cephalopod associations and palaeoecology of the Cretaceous (Barremian-Cenomanian) succession of the Alpstein, northeastern Switzerland. Cretaceous Research, 70: 15-54.
  • Klug C., Frey L., Korn D., Jattiot R. & Rücklin M. 2016. The oldest Gondwanan cephalopod mandibles (Hangenberg Black Shale, Late Devonian) and the mid-Palaeozoic rise of jaws. Palaeontology, 59 (5): 611-629.


  • Jattiot R., Trincal V., Moreau J. D. & Brocard A. 2015. Guide des ammonites pyriteuses, Toarcien moyen et supérieur des Causses (Lozère, France). Editions du Piat, 144 p.

Book chapters

  • Tajika A., Kürsteiner P., Pictet A., Jattiot R., Lehmann J. & Klug C. 2018. Ammoniten (Ammonoidea). Dans Kürsteiner P. & Klug C. (Eds). Fossilien im Alpstein: Kreide und Eozän der Nordostschweiz, 372 p.