Results 41 to 50 of about 352 (132)

A new long-tailed basal bird from the Early Cretaceous of northeastern China

, 2014
A new basal Avialae, Jeholornis curvipes sp. nov., from the Yixian Formation (Lower Cretaceous) of Liaoning Province (north-eastern China) is described. A revision of long-tailed birds from China and a phylogenetic analysis of basal Avialae suggest that ...
Lefèvre, Ulysse, Hu, Dongyu, Escuillié, François, Dyke, Gareth, Godefroit, Pascal   +4 more
core   +1 more source

Shake a tail feather: the evolution of the theropod tail into a stiff aerodynamic surface.

PLoS ONE, 2013
Theropod dinosaurs show striking morphological and functional tail variation; e.g., a long, robust, basal theropod tail used for counterbalance, or a short, modern avian tail used as an aerodynamic surface.
Michael Pittman, Stephen M Gatesy, Paul Upchurch, Anjali Goswami, John R Hutchinson   +4 more
doaj   +1 more source

A new troodontid theropod, Talos sampsoni gen. et sp. nov., from the Upper Cretaceous Western Interior Basin of North America.

PLoS ONE, 2011
BackgroundTroodontids are a predominantly small-bodied group of feathered theropod dinosaurs notable for their close evolutionary relationship with Avialae. Despite a diverse Asian representation with remarkable growth in recent years, the North American
Lindsay E Zanno, David J Varricchio, Patrick M O'Connor, Alan L Titus, Michael J Knell   +4 more
doaj   +1 more source

Exceptional Preservation of Non-Mineralized Biomaterials in Fossils of the Avialae Clade

, 2021
Thousands of primitive and diverse fossils birds from Mesozoic and Cenozoic have been discovered around the world. Among these, hundreds of studies have found exceptional preservation of mineralized biomaterials, allowing to expand the knowledge about the ecology and Evolution of birds.
Alves, Everton Fernando, Machado, Marcio Fraiberg   +1 more
openaire   +1 more source

Paravian Phylogeny and the Dinosaur-Bird Transition: An Overview

Frontiers in Earth Science, 2019
Recent years witnessed the discovery of a great diversity of early birds as well as closely related non-avian theropods, which modified previous conceptions about the origin of birds and their flight. We here present a review of the taxonomic composition
Federico L. Agnolin, Federico L. Agnolin, Federico L. Agnolin, Matias J. Motta, Matias J. Motta, Federico Brissón Egli, Federico Brissón Egli, Gastón Lo Coco, Gastón Lo Coco, Fernando E. Novas, Fernando E. Novas   +10 more
doaj   +1 more source

Inferred presence of extraoral tissues in Triassic archosauromorphs and the evolutionary implications for the clade Sauropsida

Palaeontology, Volume 69, Issue 3, 2026.
Abstract Recent work has suggested that the presence of extraoral soft tissues (‘lips’), in the form of labial scales in theropod dinosaurs, could be inferred based on: anteroposteriorly distributed foramina in the rostral bones, similar to extant lepidosaurs; vertically projected teeth; uniform enamel thickness in maxillary teeth; and an allometric ...
Rafael Terras, Jaqueline Borger, Manuelle O. P. Almeida, Silvia Bettin, Owen A. Higgins, Giulia Marciani, Stefano Benazzi, Rodrigo T. Müller, Leonardo Kerber, Mirian Carbonera   +9 more
wiley   +1 more source

Scientific sculpture of the Mesozoic bird

Earth History and Biodiversity
The collective imaginary and realistic representations of the first birds have undergone significant changes over the last 150 years in response to advances in scientific knowledge on this dinosaur lineage.
Víctor G. Peco, Sergio M. Nebreda
doaj   +1 more source

A bizarre Jurassic maniraptoran from China with elongate ribbon-like feathers [PDF]

, 2008
Recent coelurosaurian discoveries have greatly enriched our knowledge of the dinosaur-bird transition, but all reported taxa close to this transition are from relatively well-known coelurosaurian groups^1-3^.
Corwin Sullivan, Zhang, Fucheng, Wang, Xiaolin, Fucheng Zhang, Sullivan, Corwin, Zhonghe Zhou, Zhou, Zhonghe, Xu, Xing, Xing Xu, Xiaolin Wang   +9 more
core   +1 more source

Review of the tetrapod skull–neck boundary: implications for the evolution of the atlas–axis complex

Biological Reviews, Volume 100, Issue 6, Page 2435-2470, December 2025.
ABSTRACT This review describes variation in modern and fossil occiput–atlas–axis complex anatomy of total group Tetrapoda with the aim of documenting the range of structural variation throughout their evolutionary history to establish grounds for comparison of the complex between tetrapod clades.
Dana E. Korneisel, Hillary C. Maddin
wiley   +1 more source

The impact of poor sampling of polymorphism on cladistic analysis

Cladistics, Volume 32, Issue 3, Page 317-334, June 2016., 2016
Abstract Despite its ubiquity in the natural world, polymorphism is commonly disregarded or poorly sampled in phylogenetic analyses due to deliberate sampling strategy, inadequate sampling effort and limited specimen availability. Poor sampling of intraspecific variation engenders differential sampling of morphs within polymorphic species, which could ...
Akinobu Watanabe
wiley   +1 more source