- Crocodile (Froschauer 1554). Part of Set of illustrations to Gessner's Historia animalium (Froschauer)
- Crocodile. In Conrad Gessner, Conradi Gesneri medici Tigurini historiae animalium liber II. de quadrupedibus oviparis ... item oviparorum quorundam appendix, Zürich: Christoph Froschauer (printer), 1554 (Zürich, ZB), p. 8 ◼
- Crocodile (De Crocodilo Rondeletius). In Conrad Gessner, Conradi Gesneri medici Tigurini Historiae Animalium Liber IIII: qui est de Piscium & Aquatilium animantium natura, Zürich: Christoph Froschauer (printer), 1558 (Warsaw, BN), p. 361 ◼