Sachs Vertebrate Palaeontology Research

Libonectes morgani skull

Vertebrate palaeontology is the study of ancient vertebrates. My name is Sven Sachs and this website introduces the research by me and my colleagues in the field of palaeoherpetology (the study of fossil reptiles and amphibians). I am an associate researcher at the Naturkunde-Museum in Bielefeld (Germany) and my current research focuses on Mesozoic fossil tetrapods, particularly marine reptiles such as plesiosaurs, mosasaurs, sea turtles and thalattosuchian crocodyliforms. More information about my ongoing and previous work is provided at projects and publications.

During the past 20 years I have established several new species, among them the plesiosaurs Lagenanectes richterae and Arminisaurus schuberti, as lead or co-author.

I am indebted to the numerous people who have supported my research, either by providing access to specimens, or direct collaboration as co-authors and palaeoartists. Some of my co-workers are introduced under collaborators.

I hope you will find this website informative. If you have any queries about my research, please get in touch with me.

Global perspective on Mesozoic marine amniotes


Nature: Warm-blooded ichthyosaurs


Fossil Focus: Thalattosuchia


Late Cretaceous elasmosaurid from Germany


Wealden pliosauromorph

Reassessment of the Styxosaurus snowii holotype


Evidence of a large predatory plesiosaurian from the Lower Cretaceous of Germany


A rare new Pliensbachian plesiosaurian


First choristoderan from the Lower–mid-Cretaceous interval of Europe

Reassessment of Thalassomedon haningtoni


Revision of Holzmaden Toarcian plesiosauroids


Pliosauromorph plesiosaurian remains from the Late Cretaceous of Germany and Texas (USA)


Redescription of the Lower Cretaceous metriorhynchid Enaliosuchus schroederi


Mail address


Naturkunde-Museum Bielefeld

Adenauerplatz 2

33602 Bielefeld