1. Arkell WJ, Kummel B, Wright CW. 1957. Mesozoic Ammonoidea. In: Moore RC, editor. Treatise on invertebrate paleontology, part L, Mollusca 4, Cephalopoda, Ammonoidea. Kansas: Geological Society of America and University of Kansas Press; p. L80–L490.
2. Subtidal stromatolites from the Sinemurian of the Lusitanian Basin (Portugal)
3. Revisión de los Ammonoideos del Lias español depositados en el Museo Geominero (ITGE, Madrid);Bernard J;Bol Geol Minero,1996
4. Blake JF. 1876. Class Cephalopoda. In: Tate R, Blake JF, editors. The Yorkshire Lias. London: John Van Voorst; p. 261–330. pl. 18.
5. Upper Sinemurian ammonite successions based on 41 faunal horizons: an attempt at worldwide correlation;Blau J;GeoRes Forum,2000