Richard Owen 1859, p.98-103. [1859] (en) Richard Owen, «On remains of new and gigantic species of pterodactyle (Pter. fittoni and Pter. sedgwickii) from the Upper Greensand near Cambridge», Report of the British Association for the Advancement of Science, Londres, vol.28, , p.98-103 (ISSN0262-690X)..
Richard Owen 1859, p.98-103. [1859] (en) Richard Owen, «On remains of new and gigantic species of pterodactyle (Pter. fittoni and Pter. sedgwickii) from the Upper Greensand near Cambridge», Report of the British Association for the Advancement of Science, Londres, vol.28, , p.98-103 (ISSN0262-690X)..