DINOSAURS NESTING ON A RED BEACH

The Upper Cretaceous Basturs locality (Tremp Basin, northern Spain) pr eserves numerous dinosaur eggs (Megaloolithus cf. M. mammilare Vianey- Liaud, 1994). The locality was recently studied by Sanz et al. (1995) as well as by us. However, we have to disagree with several conclusion s by Sanz et al. and suggest alternative interpretations incorporating data from other localities (Coll de Nargo). The dinosaurs at Basturs did not nest at the beach, nor is there evidence for colonial nesting and territorial behaviour. However, the locality superbly documents ne sting site fidelity with an estimated occupation time of over 10 000 y ears. ((C) Academie des sciences / Elsevier, Paris.)