Late Cretaceous bird from Madagascar reveals unique development of beaks.

@article{OConnor2020LateCB,
  title={Late Cretaceous bird from Madagascar reveals unique development of beaks.},
  author={Patrick M. O’Connor and Alan H. Turner and Joseph R. Groenke and Ryan N. Felice and Raymond R. Rogers and David W. Krause and Lydia J. Rahantarisoa},
  journal={Nature},
  year={2020}
}
Mesozoic birds display considerable diversity in size, flight adaptations and feather organization1-4, but exhibit relatively conserved patterns of beak shape and development5-7. Although Neornithine (that is, crown group) birds also exhibit constraint on facial development8,9, they have comparatively diverse beak morphologies associated with a range of feeding and behavioural ecologies, in contrast to Mesozoic birds. Here we describe a crow-sized stem bird, Falcatakely forsterae gen. et sp… Expand
Exploring the Ecomorphology of Two Cretaceous Enantiornithines With Unique Pedal Morphology
Recently, ∼100 Ma amber from Myanmar has become an important source of information regarding the morphology of Late Cretaceous enantiornithines. Two specimens consisting of partial hindlimbs exhibitExpand
A new pelomedusoid turtle, Sahonachelys mailakavava, from the Late Cretaceous of Madagascar provides evidence for convergent evolution of specialized suction feeding among pleurodires
TLDR
A functional assessment suggests that Sahonachelys mailakavava was a specialized suction feeder that preyed upon small-bodied invertebrates and vertebrates that highlights the distinct evolutionary pathways taken by Madagascan vertebrates. Expand
Cretaceous bird with dinosaur skull sheds light on avian cranial evolution
TLDR
A new enantiornithine bird from the Early Cretaceous of China is described that preserves a nearly complete skull including the palatal elements, exposing the components of cranial kinesis and highlighting the highly modular and mosaic evolution of the avialan skull. Expand
A new, remarkably preserved, enantiornithine bird from the Upper Cretaceous Qiupa Formation of Henan (central China) and convergent evolution between enantiornithines and modern birds
Abstract A new enantiornithine bird is described on the basis of a well preserved partial skeleton from the Upper Cretaceous Qiupa Formation of Henan Province (central China). It provides newExpand
Macroevolutionary dynamics of dentition in Mesozoic birds reveal no long-term selection towards tooth loss
TLDR
It is shown that patterns of avialan tooth loss adhere to Dollo's law and suggested that the exclusive survival of toothless birds to the present represents lineage-specific selective pressures, irreversibility of tooth loss, and the filter of the Cretaceous-Paleogene mass extinction. Expand
The diet of early birds based on modern and fossil evidence and a new framework for its reconstruction
  • Case Vincent Miller, M. Pittman
  • Medicine
  • Biological reviews of the Cambridge Philosophical Society
  • 2021
TLDR
This work proposes a set of comparable, quantitative approaches to ascertain fossil bird diet and reports the current state of knowledge of non-avian avialan diet, expecting dietary knowledge and evolutionary trends to become much clearer in the coming years. Expand
The making of calibration sausage exemplified by recalibrating the transcriptomic timetree of jawed vertebrates
TLDR
The present work reevaluate all thirty calibrations in detail, present the current state of knowledge on them with its various uncertainties, rerun the dating analysis, and conclude that calibration dates cannot be taken from published compendia or other secondary or tertiary sources without risking strong distortions to the results. Expand
The Making of Calibration Sausage Exemplified by Recalibrating the Transcriptomic Timetree of Jawed Vertebrates
TLDR
This work reevaluate all 30 calibrations in detail, present the current state of knowledge on them with its various uncertainties, rerun the dating analysis, and conclude that calibration dates cannot be taken from published compendia or other secondary or tertiary sources without risking strong distortions to the results. Expand

References

SHOWING 1-10 OF 48 REFERENCES
Anatomy of the Early Cretaceous Enantiornithine Bird Rapaxavis pani
TLDR
The holotype and only known specimen of Rapaxavis pani is redescribed here after more extensive preparation and reveals important information for better understanding the anatomy and phylogenetic relationships of longipterygids, in particular, as well as basal birds as a whole. Expand
A revision of enantiornithine (Aves: Ornithothoraces) skull morphology
TLDR
A comprehensive overview of the current knowledge of enantiornithine skull anatomy is presented and a number of trophic specializations can be deduced from the range of preserved morphologies, further hinting at the morphological and ecological diversity of the Cretaceous Enantiornithes. Expand
Insight into diversity, body size and morphological evolution from the largest Early Cretaceous enantiornithine bird
TLDR
The largest Early Cretaceous enantiornithine bird from north‐east China is reported, which provides evidence that basal members of Enantiornithes share more morphologies with ornithurine birds than previously recognized, and allows a re‐evaluation of a previously proposed hypothesis of competitive exclusion among EarlyCretaceous avian clades. Expand
A new ornithurine from the Early Cretaceous of China sheds light on the evolution of early ecological and cranial diversity in birds
TLDR
It is found that, consistent with a proposed developmental shift in cranial ontogeny late in avialan evolution, this elongate rostrum in Changzuiornis ahgmi is achieved through elongation of the maxilla while the premaxilla remains only a small part of rostral length. Expand
A new small enantiornithine bird from the Jehol Biota, with implications for early evolution of avian skull morphology
TLDR
The results indicate that the quadratojugal is an inverted L-shaped element, morphologically similar to that of more basal birds Archaeopteryx bavarica, Jeholornis prima, Confuciusornis sanctus and Sapeornis chaoyangensis, contributing to the refinement of the cranial kinesis in early birds. Expand
Late Cretaceous neornithine from Europe illuminates the origins of crown birds
TLDR
A newly discovered fossil from the Cretaceous of Belgium is the oldest modern bird ever found, showing a unique combination of features and suggesting attributes shared by avian survivors of the end-Cretaceous mass extinction. Expand
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. Expand
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 previouslyExpand
A Review of Dromaeosaurid Systematics and Paravian Phylogeny
TLDR
This study provides the most detailed and comprehensive phylogenetic analysis of paravians to date in order to explore the phylogenetic history of dromaeosaurid taxa and reviews and revises the membership of DromaeOSauridae and provides an apomorphy-based diagnosis for all valid taxa. Expand
Closely related bird species demonstrate flexibility between beak morphology and underlying developmental programs
TLDR
The Caribbean bullfinches (Loxigilla spp.), which are closely related to Darwin's finches, have independently evolved beaks of a novel shape, different from Geospiza, but also varying from each other only in scaling, demonstrating high flexibility in the relationship between morphology and underlying developmental causes. Expand
...
1
2
3
4
5
...