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First data on dinosaur eggs and clutches from Pinyes locality (Upper Cretaceous, Southern Pyrenees) Ameghiniana
Vila,Bernat; Jackson,Frankie; Galobart,Àngel.
We describe a new megaloolithid locality discovered near Coll de Nargó (Catalonia, northeastern Iberian Peninsula). Eggs at the Pinyes site occur within extensively developed, vertically-stacked paleosols of an alluvial system. Eight clutches were excavated and mapped and biological and taphonomic aspects recorded. Three-dimensional maps were constructed using a Trimble total station, supplementing traditional planview mapping to allow more accurate interpretation of egg and clutch distribution. The Megaloolithus siruguei eggs are compressed, presenting an ellipsoidal shape. The three-dimensional geometry of two large clutches suggests that the eggs were laid in shallow, bowl-shaped depressions. Tangential thin sections of eggshells also reveal abundant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Megaloolithidae; Eggs; Clutches; 3D reconstruction; Pyrenees; Excavated pits.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142010000100005
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A nidificação de Pionus maximiliani (Kuhl) e Ara maracana (Vieillot) em Gália São Paulo, Brasil (Aves, Psittacidae) Zoologia
Carvalho,Cory T. de; Carvalho,José.
Nests of the "Scaly-headed parrot" and "Illiger's macaw" - Pionus maximiliani (Kuhl, 1820) and Ara maracana (Vieillot, 1816) - found at the Ecological Station in Gália, São Paulo with clutches in 26-VII-90 and 20-IX-90, both containing four white rounded and at one end slightly pointed eggs, measuring 33.4x30.0mm and 33.0x28.0mm each respectively, are being reported on. The incubation in the "Scaly-headed parrot" lasted for 26 days, the stay of the young in the nest cavity for about 50 days and only one adult was seen incubating, while in "Illiger's or Blue-winged macaw" both parents used to stay in the nest.
Tipo: Info:eu-repo/semantics/article Palavras-chave: P. maximiliani; A maracana; Nests; Clutches; Habits.
Ano: 1992 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751992000200024
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