Template:Guex et al., 2010
- Guex J., Hungerbühler A., Jenks J.F., O'Dogherty L., Atudorei V., Taylor D.G., Bucher H. & Bartolini A., 2010. Spathian (Lower Triassic) ammonoids from western USA (Idaho, California, Utah and Nevada). Mémoires de Géologie (Lausanne) 49:1-82 (researchgate.net).