Eric W.A. Mulder (Natura Docet Wonderryck) is a leading expert on tetrapods from the type-Maastrichtian. He was born and raised in Almelo (Enschede Area, the Netherlands). Already as a child, Eric was fascinated by animals and fossils. Therefore, he chose to study zoology and palaeontology at the Radboud University in Nijmegen, where he graduated cum laude with a Masters degree in 1981. More or less by coincidence, he returned to the area where he grew up. From 1983 on, he is working as a curator, museum educator and exhibition content developer in the natural history museum Natura Docet Wonderryck Twente in Denekamp. In 1996, Eric met with professor Gijsbert Boekschoten, who encouraged him to start a PhD research on Late Cretaceous tetrapods from the chalk deposits around Maastricht. As a result, a doctorate in vertebrate palaeontology was obtained in 2003 at the Vrije Universiteit in Amsterdam. In the same year he was appointed honorary curator for the Cretaceous vertebrate collection of the Natuurhistorisch Museum Maastricht. From August 2017 till March 2018, Eric was parttime interim scientific content developer on a seven-month posting at Naturalis Biodiversity Center in Leiden. Since August 2018, he combines his job in Denekamp with a guest-lectureship in evolutionary developmental biology at the University of Twente in Enschede. Up till now, he (co-) authored over 60 scientific journal publications and contributed to 4 books. Eric is married and lives in Oldenzaal. This multiple participant in the International Four Days Marches Nijmegen also likes music, history, steam locomotives and numismatics.