PeerJ Author 235 Points Contributions by role Author 235 Contributions by subject area Evolutionary Studies Paleontology Histology Animal Behavior Zoology Kai R. Caspar PeerJ Author Summary Animal Behavior Zoology Past or current institution affiliations Rheinische Friedrich-Wilhelms Universität Bonn PeerJ Contributions Articles 2 November 19, 2019 Hematological convergence between Mesozoic marine reptiles (Sauropterygia) and extant aquatic amniotes elucidates diving adaptations in plesiosaurs Corinna V. Fleischle, P. Martin Sander, Tanja Wintrich, Kai R. Caspar https://doi.org/10.7717/peerj.8022 PubMed 31763069 August 6, 2018 Captive gibbons (Hylobatidae) use different referential cues in an object-choice task: insights into lesser ape cognition and manual laterality Kai R. Caspar, Larissa Mader, Fabian Pallasdies, Miriam Lindenmeier, Sabine Begall https://doi.org/10.7717/peerj.5348 PubMed 30128182