This article describes known ways of nesting and egg types in dinosaurs in relation to offspring-rearing. Feathers were in a co-evolutionary relationship to other early stages in the rearing of the young. Therefore they were more developed than skeletal features in the Archaeopteryx. Further development of offspring-rearing can be considered as the basic principle for pre-adaptation for the development of flying.
Tento článek získal ocenění: Zvláštní ocenění časopisu Živa, Cena Antonína Friče
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(c) J. R. Horner, R. Makela (1979), D. Norman (1985)