A New Enantiornithine Bird with Unusual Pedal Proportions Found in Amber

  title={A New Enantiornithine Bird with Unusual Pedal Proportions Found in Amber},
  author={Lida Xing and Jingmai K. O’Connor and Luis Mar{\'i}a Chiappe and Ryan C. McKellar and Nathan R. Carroll and Han Hu and Ming Bai and Fumin Lei},
  journal={Current Biology},
A New Enantiornithine (Aves) Preserved in Mid-Cretaceous Burmese Amber Contributes to Growing Diversity of Cretaceous Plumage Patterns
A new specimen that consists of the distal extremities of both forelimbs and hindlimbs is described, suggestive of a diversity of limb proportions in the Burmese enantiornithine fauna, similar to that observed in the Jehol avifauna.
Hummingbird-sized dinosaur from the Cretaceous period of Myanmar
Oculudentavis khaungraae —a newly discovered theropod from the Cretaceous period of Myanmar—reveals a previously unknown bauplan and ecology associated with miniaturization, highlighting the potential for recovering small-bodied vertebrates from amber deposits.
An unusually large bird wing in mid-Cretaceous Burmese amber
The Plumage of Basal Birds
Overall, early birds show a trend towards the reduction of the distal hindlimb feathers present in closely related nonavian dinosaurs, however, well-developed tarsometatarsal feathers are present in Sapeornis and two exceptionally well-preserved enantiornithine specimens indicate this group was diverse in thedistal extent of their hindlimB plumage, including at least one lineage with feathered pedal digits.
Chapter 2 The fossil record of Mesozoic and Paleocene pennaraptorans
An unabated surge of new and important discoveries continues to transform knowledge of pennaraptoran biology and evolution amassed over the last 150+ years. This chapter summarizes progress made thus
Reply to: “Insects with 100 Million-Year-Old Dinosaur Feathers are not Ectoparasites” and “Crawlers of the Scale Insect Mesophthirus (Homoptera Xylococcidae) on Feathers in Burmese Amber—Wind Transport or Phoresy on Dinosaurs?”
Abstract We described ten nymph specimens of an insect, Mesophthirus engeli (incertae sedis), from the mid-Cretaceous Myanmar (Burmese) amber, preserved together with partially damaged dinosaur
Comparing morphological traits of legs of understory birds inhabiting forest areas with closed canopies and forest gaps
Results from classification tree analysis revealed that digit claw length is the most important trait for predicting which habitat a species is most likely to occupy, suggesting that understory birds with long leg structures that live under closed canopies are most vulnerable to forest disturbances or the conversion of forests to large-scale open areas.


A new, three-dimensionally preserved enantiornithine bird (Aves: Ornithothoraces) from Gansu Province, north-western China
The exceptional, three-dimensional preservation of these specimens (compared to the crushed, nearly two-dimensional condition of most other Early Cretaceous avian fossils) reveals new information regarding enantiornithine anatomy, evolution, and diversity.
A New Early Cretaceous Enantiornithine (Aves, Ornithothoraces) from Northwestern China with Elaborate Tail Ornamentation
Ornamental tail morphologies, such as the novel tail plumage described here, dominate Enantiornithes and reinforces hypotheses that sexual selection was a major driving force in the evolution of basal bird plumage.
Mummified precocial bird wings in mid-Cretaceous Burmese amber
These specimens demonstrate that the plumage types associated with modern birds were present within single individuals of Enantiornithes by the Cenomanian, providing insights into plumage arrangement and microstructure alongside immature skeletal remains.
A fully feathered enantiornithine foot and wing fragment preserved in mid-Cretaceous Burmese amber
A remarkably well-preserved foot, accompanied by part of the wing plumage, is described, providing direct analogies to the plumage patterns observed in modern birds, and those cultivated through developmental manipulation studies.
A New Species of Pengornithidae (Aves: Enantiornithes) from the Lower Cretaceous of China Suggests a Specialized Scansorial Habitat Previously Unknown in Early Birds
We describe a new enantiornithine bird, Parapengornis eurycaudatus gen. et sp. nov. from the Lower Cretaceous Jiufotang Formation of Liaoning, China. Although morphologically similar to previously
First species of Enantiornithes from Sihedang elucidates skeletal development in Early Cretaceous enantiornithines
The Sihedang locality of the Lower Cretaceous Yixian Formation is the only recognized ornithuromorph-dominated locality in the Jehol Group of north-eastern China and a new taxon Monoenantiornis sihedangia is erected, consistent with the pattern of ossification that occurs in neornithines.
A bizarre Early Cretaceous enantiornithine bird with unique crural feathers and an ornithuromorph plough-shaped pygostyle
Enantiornithes are the most successful clade of Mesozoic birds. Here, we describe a new enantiornithine bird, Cruralispennia multidonta gen. et sp. nov., from the Protopteryx-horizon of the Early