The trophic habits of early birds

@article{OConnor2019TheTH,
  title={The trophic habits of early birds},
  author={Jingmai K. O’Connor},
  journal={Palaeogeography, Palaeoclimatology, Palaeoecology},
  year={2019}
}
  • J. O’Connor
  • Published 1 January 2019
  • Environmental Science, Geography
  • Palaeogeography, Palaeoclimatology, Palaeoecology

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References

SHOWING 1-10 OF 110 REFERENCES

Reinterpretation of a previously described Jehol bird clarifies early trophic evolution in the Ornithuromorpha

TLDR
Close inspection of STM35-3 reveals that the specimen represents a new species not closely related to hongshanornithids, distinguished by large forelimbs that exceed the length of the hindlimbs, robust and narrow coracoids, and a delicate edentulous rostrum.

New Specimens of Yanornis Indicate a Piscivorous Diet and Modern Alimentary Canal

TLDR
One specimen preserves two whole fish in the oesophagus, indicating that Early Cretaceous birds shared trophic specializations with Neornithes for the increased energetic demands of flight – namely the storing of food for later consumption when the stomach is full.

Early evolution of the biological bird: perspectives from new fossil discoveries in China

TLDR
While no skeletal or integumentary features are recognized to define Aves, a partial reconstruction of the biology of Aves very close to its origin is identified: the presence of a crop and the loss of the right ovary.

A New Ornithuromorph (Aves: Ornithothoraces) Bird from the Jehol Group Indicative of Higher-Level Diversity

TLDR
The discovery of a new bird from the Lower Cretaceous Yixian Formation, Liaoning Province, China, which represents a new species, but bears similarities to Hongshanornis longicresta from the same formation of Inner Mongolia, and represents a clade of specialized ‘shorebirds’ whose elongate hindlimbs indicate ecological adaptations different from those of other Jehol ornithuromorphs.

A New Specimen of Large-Bodied Basal Enantiornithine Bohaiornis from the Early Cretaceous of China and the Inference of Feeding Ecology in Mesozoic Birds

TLDR
It is hypothesized that cranial morphology as well as the number and shape of the preserved stones in Bohaiornis may be most consistent with a raptorial ecology previously unknown for Enantiornithes and considered rare for Avialae.

Discovery of an ornithurine bird and its implication for Early Cretaceous avian radiation.

  • Zhonghe ZhouFucheng Zhang
  • Environmental Science, Geography
    Proceedings of the National Academy of Sciences of the United States of America
  • 2005
An ornithurine bird, Hongshanornis longicresta gen. et sp. nov., represented by a nearly complete and articulated skeleton in full plumage, has been recovered from the lacustrine deposits of the

Gastroliths in Yanornis: an indication of the earliest radical diet-switching and gizzard plasticity in the lineage leading to living birds?

TLDR
The discovery of a new complete and articulated specimen of Yanornis martini preserves abundant in-situ gastroliths, which indicates the earliest presence of intermittent diet change observed in extant birds seasonally and in response to changes in available food sources.

Additional specimen of Microraptor provides unique evidence of dinosaurs preying on birds

TLDR
A unique specimen of the small nonavian theropod Microraptor gui from the Early Cretaceous Jehol biota, China, which has the remains of an adult enantiornithine bird preserved in its abdomen, most likely not scavenged, but captured and consumed by the dinosaur.

Largest bird from the Early Cretaceous and its implications for the earliest avian ecological diversification

TLDR
A new bird from the Early Cretaceous feathered-dinosaur-bearing continental deposits of Liaoning, northeast China is reported, which is not only larger than Archaeopteryx but is nearly twice as large as the basal dromaeosaur Microraptor.
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