Mateus, I, Mateus H, Antunes MT, Mateus O, Taquet P, Ribeiro V, Manuppella G.
1997.
Couvée, oeufs et embryons d'un dinosaure théropode du Jurassique supérieur de Lourinhã (Portugal), Jully. C.R Acad. Sci. Paris, Sciences de la terre et des planetes. 325:71-78., Number 1
AbstractSeveral well preserved clutches of dinosaurs have been discovered in the upper Kimmeridgian/ Tithonian of Lourinhã (Estramadur Province, Portugal). Some eggs of one clutch contained embryo elements of a theropod dinosaur. The egg-shell resembles that of eggs which have been discovered in the Upper Jurassic of Colorado