Hans Thewissen

Hans Thewissen
Born
Johannes Gerardus Marie Thewissen

(1959-11-28) 28 November 1959 (age 64)
Herkenbosch, Netherlands[1]
NationalityAmerican / Dutch
Alma materUniversity of Utrecht (MSc),
University of Michigan (PhD)
Known forAmbulocetus
Pakicetus
Indohyus
Kutchicetus
Arctic whales
Scientific career
FieldsPaleontology, evolutionary biology, anatomy, embryology, Sensory ecology
InstitutionsNortheast Ohio Medical University,
Kent State University
Cleveland Museum of Natural History
ThesisEvolution of Paleocene and Eocene Phenacodontidae (Mammalia, Condylarthra) (1989)
Doctoral advisorPhilip D. Gingerich

Johannes Gerardus Marie (Hans) Thewissen is a Dutch-American paleontologist known for his significant contributions to the field of whale evolution. Thewissen's fieldwork has led to the discovery of key fossils that have shed light on the transition of whales from land to water, including the discovery of Ambulocetus, Pakicetus, Indohyus, and Kutchicetus. In addition to his work on fossil discoveries, Thewissen also studies modern bowhead and beluga whales in Alaska, focusing on their biology and the implications of this knowledge for management and conservation efforts. His research has been instrumental in deepening our understanding of cetacean evolution and the adaptations that allowed these mammals to transition from terrestrial to fully aquatic lifestyles.

  1. ^ Hermans-Delescen, H.G. "Landgenoot". NRC.nl. NRC. Archived from the original on 1 September 2021. Retrieved 2 December 2018.