A nesting dinosaur
@article{Norell1995AND, title={A nesting dinosaur}, author={Mark A. Norell and James M. Clark and Luis Mar{\'i}a Chiappe and Demberelyin Dashzeveg}, journal={Nature}, year={1995}, volume={378}, pages={774-776} }
A SPECTACULAR fossil specimen that suggests the presence of an avian type of nesting behaviour in oviraptorids, a clade of non-avian maniraptoran theropods, is reported here. The substantial evidence indicating that birds are a type of theropod dinosaur has led to copious discussion concerning the origin and possible presence of advanced avian reproductive behaviour in non-avian dinosaurs. Although the inference of behaviour from fossils is problematic, some remarkable discoveries, such as the…
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Dinosaur eggs and nesting behaviors: A paleobiological investigation
- Environmental Science, Geography
- 2006
Exceptional preservation of a Late Cretaceous dinosaur nesting site from Mongolia reveals colonial nesting behavior in a non-avian theropod
- Environmental Science, GeographyGeology
- 2019
Colonial nesting behavior has been inferred in a variety of non-avian dinosaurs based on high concentrations of nests preserved in an area, but sedimentologic and taphonomic evidence demonstrating…
Oldest known dinosaurian nesting site and reproductive biology of the Early Jurassic sauropodomorph Massospondylus
- Environmental Science, GeographyProceedings of the National Academy of Sciences
- 2012
A temporally calibrated optimization of dinosaurian reproductive biology not only demonstrates the primary significance of the Massospondylus nesting site, but provides additional insights into the initial stages of the evolutionary history of dinosaurs, including evidence that deposition of eggs in a tightly organized single layer in a nest evolved independently from brooding.
Reconstruction of oviraptorid clutches illuminates their unique nesting biology
- Biology, Environmental ScienceActa Palaeontologica Polonica
- 2019
It is indicated that the oviraptorid clutch has a unique architecture unknown from extant bird clutches, implying an apomorphic nesting mode, which further contradicts the TCI hypothesis in ovirptorids.
Bird-like characteristics of troodontid theropod eggshell
- Geography, Environmental Science
- 2002
The identification of squamatic ultrastructure in troodontid eggshell, which was previously thought to lack this structure, reveals problems with the previous assignment of this eggshell to the dinosauroid-prismatic morphotype and with the concept of eggshell morphotype in the current eggshell parataxonomy.
UNIQUE MANIRAPTORAN EGG CLUTCH FROM THE UPPER CRETACEOUS TWO MEDICINE FORMATION OF MONTANA REVEALS THEROPOD NESTING BEHAVIOUR
- Environmental Science
- 2008
This clutch reveals that the egg-layer of Montanoolithus strongorum had a unique suite of reproductive characteristics and nesting behaviours among maniraptorans.
Oviraptor philoceratops Dinosaurs
- Environmental Science, Geography
- 2018
Oviraptor philoceratops [2] was a small bird-like dinosaur that lived about seventy-five million years ago, during the late Cretaceous period. In 1923, George Olsen of the American Museum of Natural…
Incubation behaviours of oviraptorosaur dinosaurs in relation to body size
- Environmental Science, BiologyBiology Letters
- 2018
The results suggest that the smallest oviraptorosaurs probably sat directly on the eggs, whereas with increasing body size more weight was likely carried by the central opening, reducing or eliminating the load on the Eggs and still potentially allowing for some contact during incubation in giant species.
RARE IN SITU PRESERVATION OF ADULT CROCODYLIAN WITH EGGS FROM THE MIDDLE EOCENE OF GEISELTAL, GERMANY
- Geography, Environmental Science
- 2015
A remarkable fossil of an adult crocodylian preserved in situ with eggs from the middle Eocene of Geiseltal, Germany is presented, providing the first-reported evidence for the antiquity of parental care in the croc Codylian lineage.
A nesting trace with eggs for the Cretaceous theropod dinosaur Troodon formosus.
- Environmental Science, Geography
- 1999
ABSTRACT An unusual trace containing eggs of the 50 kg-plus theropod dinosaur, Troodon formosus, represents one of the best preserved dinosaur nests. This unique specimen (MOR 963) represents the…
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