|
|
|
Research in the Evolutionary Morphology Research Group (EvoMoRG) at the Department of Palaeontology of the University of Vienna is at the interface between palaeobiology and evolutionary developmental biology of vertebrates. For this we integrate living and fossil organisms, knowledge of their evolutionary relationships, anatomy and morphology, developmental (palaeo)biology and genetic information, but also past diversity patterns to provide a holistic understanding of their evolutionary history. We have particular interests in, but not restricted to, the evolutionary origin, morphological rate changes, adaptive trait developments, and diversity and disparity patterns of modern sharks, skates, and rays as well as bony fishes at the broadest temporal and spatial scales. Central questions that we seek to answer are why certain groups became successful (in terms of taxonomic diversity or position within trophic food webs) or went extinct even when they were successful in deep time.
Infrastructure
Our lab has facilities for rock digestion, high-end micro-computed tomography (Bruker Skyscan 1173 Desktop-Micro-Computertomograph; click here for more information), 3D digital microscopy (Keyence VHX-6000, 20-2000x magnification), scanning electron microscopy, high performance computing for image data processing, micro- and macro-anatomical labs, and an aquarium infrastructure (click here for watching suction feeding of Hemiscyllium ocellatum) to support individual palaeobiological projects but also providing research services for other departments of the University of Vienna (e.g., Geology, Mineralogy, Anthropology, Zoology, and Theoretical Biology) and third parties.
|
Congratulations to Sebastian Stumpf for successfully securing a FWF project, entitled Macroevolutionary dynamics of Mesozoic hybodontiform fishes!
Congratulations to Elora Marx for winning the Master's Presenter's Award at this year's NOBIS meeting!
NEW research projects in vertebrate palaeobiology for bachelor and master theses are available.
For enquiries contact
Univ.-Prof. Dr. Jürgen Kriwet (juergen.kriwet@univie.ac.at) or Dr. Cathrin Pfaff (cathrin.pfaff@univie.ac.at).
|
|
| up
Latest Publication |
|
2024: Eocene Shark Teeth From Peninsular Antarctica: Windows
to Habitat Use and Paleoceanography. (Link)
Eocene climate cooling, driven by the falling pCO2 and tectonic changes in the Southern Ocean, impacted marine ecosystems. Sharks in high‐latitude oceans, sensitive to these changes, offer insights into both environmental shifts and biological responses, yet few paleoecological studies exist. The Middle‐to‐Late Eocene units on Seymour Island, Antarctica, provide a rich, diverse fossil record, including sharks. We analyzed the oxygen isotope composition of phosphate from shark tooth bioapatite (δ18Op) and compared our results to co‐occurring bivalves and predictions from an isotope‐enabled global climate model to investigate habitat use and environmental conditions. Bulk δ18Op values (mean 22.0 ± 1.3‰) show no significant changes through the Eocene. Furthermore, the variation in bulk δ18Op values often exceeds that in simulated seasonal and regional values. Pelagic and benthic sharks exhibit similar δ18Op values across units but are offset relative to bivalve and modeled values. Some taxa suggest movements into warmer or more brackish waters (e.g., Striatolamia, Carcharias) or deeper, colder waters (e.g., Pristiophorus). Taxa like Raja and Squalus display no shift, tracking local conditions in Seymour Island. The lack of difference in δ18Op values between pelagic and benthic sharks in the Late Eocene could suggest a poorly stratified water column, inconsistent with a fully opened Drake Passage. Our findings demonstrate that shark tooth bioapatite tracks the preferred habitat conditions for individual taxa rather than recording environmental conditions where they are found. A lack of secular variation in δ18Op values says more about species ecology than the absence of regional or global environmental changes.
|
 |
|
|
|
| up
Address |
|
Department of Paleontology
University of Vienna, Geozentrum
Josef-Holaubek-Platz 2
1090 Vienna, Austria
Contact
|
Our research is/was supported by the
Austrian
Science Fund (FWF),
the CONICYT Chile,
the Austrian
Exchange Service (OeAD),
German Academic Exchange Service (DAAD),
the German Research Foundation (DFG),
the Marie-Curie Actions of the
European Union, the SENACYT Panama, Sharkproject Austria, Synthesys, the University of Vienna,
Human Evolution and Archaeological Sciences (HEAS)
Vienna Doctoral School of Ecology and Evolution (VDSEE).
and the Federal Ministry of Education, Science and Research.
| |
