title: First record of a dicephalic specimen of tope Galeorhinus galeus (Elasmobranchii: Triakidae).
abstract: The first case of dicephalia in tope Galeorhinus galeus analysed in developing foetuses removed from a pregnant female caught off the Mar del Plata coastal waters, Argentine Sea, is reported here.
authors.affiliation: Universidad Nacional de Mar del Plata, Facultad de Ciencias Exactas y Naturales, Departamento de Ciencias Marinas, Funes 3350, B7602AYL, Mar del Plata, Argentina. matidelpiani16@yahoo.com.ar
authors.forename: S M
authors.initials: SM
authors.lastname: Delpiani
authors.forename: M Y
authors.initials: MY
authors.lastname: Deli Antoni
authors.forename: S A
authors.initials: SA
authors.lastname: Barbini
authors.forename: D E
authors.initials: DE
authors.lastname: Figueroa
mesh_terms: D000818:Animals; D005260:Female; D005333:Fetus / Q000002:abnormalities; D005393:Fish Diseases / Q000151:congenital* / Q000000981:diagnostic imaging / Q000473:pathology*; D006257:Head / Q000002:abnormalities*; D008297:Male; D011859:Radiography; D012754:Sharks / Q000002:abnormalities*; D013131:Spine / Q000002:abnormalities