A New Early Cretaceous Enantiornithine (Aves, Ornithothoraces) from Northwestern China with Elaborate Tail Ornamentation

  title={A New Early Cretaceous Enantiornithine (Aves, Ornithothoraces) from Northwestern China with Elaborate Tail Ornamentation},
  author={Jingmai K. O’Connor and Da-Qing Li and Matthew C. Lamanna and Min Wang and Jerald D. Harris and Jessie Atterholt and Hailu You},
  journal={Journal of Vertebrate Paleontology},
ABSTRACT We provide a detailed description of a well-preserved enantiornithine specimen (GSGM-05-CM-004) from the Lower Cretaceous (Aptian) Xiagou Formation of northwestern Gansu Province, China, for which we erect the new taxon Feitianius paradisi, gen. et sp. nov. This specimen has a distinctive pelvic morphology and can be further distinguished from all other Mesozoic birds by a unique caudal plumage formed by multiple rectricial morphotypes. This newly documented tail morphology reveals a… 
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 exhibit
An Early Cretaceous enantiornithine (Aves) preserving an unlaid egg and probable medullary bone
The Cretaceous enantiornithine bird Avimaia schweitzerae is described, which preserves an unlaid egg in the abdominal cavity and putative medullary bone, and is hypothesized to represent the ancestral avian condition.
A new advanced ornithuromorph bird from Inner Mongolia documents the northernmost geographic distribution of the Jehol paleornithofauna in China
ABSTRACT We describe a new taxon of advanced ornithuromorph bird, Khinganornis hulunbuirensis gen. et sp. nov., from the previously unreported Pigeon Hill locality of the Lower Cretaceous Longjiang
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.
Morphological coevolution of the pygostyle and tail feathers in Early Cretaceous birds
The transformation from a long reptilian tail to a shortened tail ending in a pygostyle and accompanied by aerodynamic fanning rectrices is one of the most remarkable adaptations of early avian
Pennaraptoran Theropod Dinosaurs Past Progress and New Frontiers
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
Mid-Cretaceous amber inclusions reveal morphogenesis of extinct rachis-dominated feathers
The study of these Burmese feathers confirms previous claims, based on two-dimensional fossils, that they correspond to an extinct morphotype and cautions about the common practice of extrapolating developmental aspects of modern feathers to those of stem birds because the latter need not to have developed through identical pathways.
Exceptional preservation of soft tissue in a new specimen of Eoconfuciusornis and its biological implications
The preserved soft tissues of the wing indicate the presence of a propatagium and postpatagium, whereas an alular patagium is absent, and the tail plumage lacks elongate rectrices, suggesting that the earliest known confuciusornithiforms were sexually dimorphic in their plumage.


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 Enantiornithine Bird from the Lower Cretaceous of Western Liaoning, China
ABSTRACT A new enantiornithine bird, Bohaiornis guoi, gen. et sp. nov., is described in this paper. The holotype, presumably a sub-adult, is a complete, fully articulated skeleton from the Lower
Phylogenetic support for a specialized clade of Cretaceous enantiornithine birds with information from a new species
Shanweiniao provides new information on the anatomy of longipterygids, and preserves a rectricial morphology previously unknown to enantiornithines, with at least four tail feathers closely arranged, which supports the hypothesis that enantiORNithines were strong fliers and adds to the diversity of known tail morphologies of these Cretaceous birds.
A New Ornithuromorph (Aves: Ornithothoraces) Bird from the Jehol Group Indicative of Higher-Level Diversity
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 second enantiornithean (Aves: Ornithothoraces) wing from the Early Cretaceous Xiagou Formation near Changma, Gansu Province, People's Republic of China
A new specimen of an enantiornithean bird from the Lower Cretaceous Xiagou Formation of Gansu Province, northwestern China, consists of an articulated distal left humerus, ulna, radius, carpus, and
A New Enantiornitine Bird with Four Long Rectrices from the Early Cretaceous of Northern Hebei, China
:Paraprotopteryx gracilis, a new enantiornithine bird from the Early Cretaceous Yixian Formation in Fengning, northern Hebei Province is erected, based on the following characters: Y-shaped furcula
A Second Cretaceous Ornithuromorph Bird from the Changma Basin, Gansu Province, Northwestern China
Finely-bedded lacustrine deposits of the Aptian (Lower Cretaceous) Xiagou Formation exposed in the Changma Basin of Gansu Province, northwestern China, have yielded numerous fossil vertebrate
A new piscivorous ornithuromorph from the Jehol Biota
The preservation of fish bones ventral to the dentary and in the stomach provides direct evidence that the new species was piscivorous – previously only reported in Yanornis, and as in some living birds, was capable of moving food bidirectionally through the alimentary canal.
New Species of Enantiornithes (Aves: Ornithothoraces) from the Qiaotou Formation in Northern Hebei, China
The new taxon possesses a large postorbital with a long tapering jugal process indicating that some enantiornithines may have had a fully diapsid skull, as in Confuciusornis, and likely represents a previously unknown trophic specialization within Enantiornithes.
Life history of a basal bird: morphometrics of the Early Cretaceous Confuciusornis
A multivariate morphometric study involving measurements of more than 100 skeletons of C. sanctus shows any correlation between size distribution and the presence or absence of blade-like rectrices (tail feathers), thus implying, that if these feathers are sexual characters, they are not correlated with sexual size dimorphism.