Biblioteca de la Universidad Complutense de Madrid

Dinosaurs nesting on tidal flats

Impacto



López Martínez, Nieves y Moratalla, J.J. y Sanz, J.L. (2000) Dinosaurs nesting on tidal flats. Palaeogeography, palaeoclimatology, palaeoecology , 160 (1-2). pp. 153-163. ISSN 0031-0182

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URL Oficial: http://www.elsevier.com/wps/find/journaldescription.cws_home/503355/description#description



Resumen

The discovery of a dinosaur clutch in Upper Cretaceous tidal flat deposits in the Tremp Formation in Biscarri,
Isona (Lleida, Spain), provides insight into the mode of life of some dinosaurs. The clutch occurs in grey marls that
were originally waterlogged, muddy sediments. The seven elongated eggs are parallel to each other and with their
long axis almost vertically oriented. A mound-nest is inferred in contrast to hole-nest described so far for similar eggshell types. The permeability of the eggshell (oospecies Megaloolithus siruguei) was highly enhanced by a braidednetwork of multicanaliculate pore canals. The nest style, eggshell porosity and tidal flat environment point to a periaquatic habitat for these dinosaurs. A modern analogue occurs in crocodiles, alligators and some birds living in periaquatic environments, with nesting on plant-mounds above waterlogged soils or even on floating vegetation.


Tipo de documento:Artículo
Palabras clave:Dinosaurs; Eggs; Nests; Spanish Pyrenees; Tidal flats; Upper Cretaceous
Materias:Ciencias > Geología > Paleontología
Código ID:9975
Depositado:28 Ene 2010 14:57
Última Modificación:01 Feb 2010 09:21

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