- Sea wolf (Froschauer 1554). Part of Set of illustrations to Gessner's Historia animalium (Froschauer)
- Sea wolf (Lupus marinus). In Conrad Gessner, Appendix historiae Quadrupedum uiuiparorum & ouiparorum, Zürich: Christoph Froschauer (printer), 1554 (Washington, DC, Smithsonian Libraries), p. 24 ◼
- Sea wolf (Lupus marinus). 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. 24 ◼
- Sea wolf (Lupus marinus). In Conrad Gessner, Icones Animalivm Qvadrvpedvm Viviparorvm Et Oviparorvm ..., Zürich: Christoph Froschauer (printer), 1560 (Zürich, ETH-Bibliothek), p. 81 ◼
- Sea Wolf (Lupus Marinus). In Conrad Gessner, Conradi Gesneri Medici Tigvrini Historiae Animalivm Liber Primvs De quadrupedibus viuiparis... Editio secunda ..., Frankfurt am Main: Robert Cambier (printer), 1602 (Washington, DC, Smithsonian Libraries), p. 674 ◼
- Sea wolf (Lupus marinus). In Conrad Gessner, Icones Animalivm Qvadrvpedvm Viviparorvm Et Oviparorvm ..., Heidelberg: Andreas Cambier (printer), Johann Lancelot (printer), 1606 (London, BL), p. 81
- Sea Wolf (Lupus Marinus). In Conrad Gessner, Conr. Gesneri Medici Tigvrini Historiae Animalivm Liber Primvs De quadrupedibus viuiparis... Editio secunda ..., Frankfurt am Main: Robert Cambier (printer), 1620 (Poznań, Biblioteka Uniwersytecka), p. 674