A New Jehol Enantiornithine Bird with Three-Dimensional Preservation and Ovarian Follicles

  title={A New Jehol Enantiornithine Bird with Three-Dimensional Preservation and Ovarian Follicles},
  author={Yan Wang and Min Wang and Jingmai K. O’Connor and Xiao-li Wang and Xiaoting Zheng and Xiaomei Zhang},
  journal={Journal of Vertebrate Paleontology},
  • Yan Wang, M. Wang, +3 authors Xiaomei Zhang
  • Published 11 January 2016
  • Biology
  • Journal of Vertebrate Paleontology
ABSTRACT We report a new enantiornithine bird, Linyiornis amoena gen. et sp. nov., from the Lower Cretaceous Jiufotang Formation in northeastern China. Traces of ovarian follicles indicate that the specimen represents a female individual. The nearly three-dimensional preservation of the new specimen reveals morphological details rarely visible in other Early Cretaceous enantiornithines, allowing more detailed comparison with Late Cretaceous enantiornithines. Differences in the preserved… Expand
Confirmation of ovarian follicles in an enantiornithine (Aves) from the Jehol biota using soft tissue analyses
The remains of ovarian follicles reported in nine specimens of basal birds represents one of the most remarkable examples of soft-tissue preservation in the Early Cretaceous Jehol Biota. ThisExpand
A new small enantiornithine bird from the Jehol Biota, with implications for early evolution of avian skull morphology
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
New anatomical information on the bohaiornithid Longusunguis and the presence of a plesiomorphic diapsid skull in Enantiornithes
The rarely preserved postorbital of the bohaiornithid Longusunguis kurochkini is completely preserved on both sides of the skull, confirming the presence of a complete postorbitals bar in some enantiornithines. Expand
A Morphological Study of the First Known Piscivorous Enantiornithine Bird from the Early Cretaceous of China
It is shown that this fish-eating enantiornithine bird from the Lower Cretaceous Jiufotang Formation of Liaoning Province, northeastern China represents a new taxon, Piscivorenantiornis inusitatus, gen. et sp. Expand
Medullary bone in an Early Cretaceous enantiornithine bird and discussion regarding its identification in fossils
Criteria for identifying medullary bone in fossils is proposed and a new specimen of pengornithid enantiornithine from the Lower Cretaceous Jiufotang Formation is described, considered to be homologous to the medullARY bone of Neornithines. Expand
New information on the plumage of Protopteryx (Aves: Enantiornithes) from a new specimen
The morphology of this taxon hints at the morphology of the ornithothoracine common ancestor, as well as new morphological data from the holotype and paratype, supplemented with information from a new specimen. Expand
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 EarlyExpand
A new enantiornithine (Aves: Ornithothoraces) with completely fused premaxillae from the Early Cretaceous of China
We report a new small enantiornithine, Shangyang graciles gen. et sp. nov., based on a nearly complete and articulated skeleton from the Lower Cretaceous Jiufotang Formation of Liaoning Province,Expand
Avian palaeoneurology: Reflections on the eve of its 200th anniversary
The coming years will certainly witness a momentous strengthening of this rapidly growing field of research at the overlap between ornithology, palaeontology, evolutionary biology and neurosciences. Expand
Insight into the growth pattern and bone fusion of basal birds from an Early Cretaceous enantiornithine bird
Significance We report an Early Cretaceous bird from 120 My ago that has a completely fused carpometacarpus and pelvis, pushing back the date for these avian traits by over 40 My. We suggest thatExpand


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. Expand
The First Enantiornithine Bird from the Upper Cretaceous of China
Histological study shows that the bones of Parvavis were composed of parallelfibered bone tissue without lines of arrested growth, and indicated that growth rate had slowed but had not stopped at any stage prior to death, and the new bird was probably close to adult body size at the time of death. Expand
A New Enantiornithine from the Yixian Formation with the First Recognized Avian Enamel Specialization
ABSTRACT We report on a new enantiornithine bird, Sulcavis geeorum, gen. et sp. nov., from the Jehol Group of northeastern China. The fossil preserves robust teeth with longitudinal groovesExpand
Anatomy of the Early Cretaceous Enantiornithine Bird Rapaxavis pani
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
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
A New Robust Enantiornithine Bird from the Lower Cretaceous of China with Scansorial Adaptations
ABSTRACT We describe a new enantiornithine bird, Fortunguavis xiaotaizicus, gen. et sp. nov, from the Lower Cretaceous lacustrine deposits of the Jiufotang Formation in northeastern China. The newExpand
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. Expand
A new Enantiornithine bird from the Late Cretaceous of the Gobi desert
The combination of phylogeny and functional interpretation suggests that this new fossil bird is a representative of a flightless lineage, providing the first evidence of a trend towards more limited flying capabilities among Enantiornithes, a group of Cretaceous birds otherwise believed to be represented by competent fliers. Expand
A Confuciusornithiform (Aves, Pygostylia)-Like Tarsometatarsus from the Early Cretaceous of Siberia and a Discussion of the Evolution of Avian Hind Limb Musculature
A new isolated tarsometatarsus from the Early Cretaceous Ilek Formation Shestakovo-3 locality in western Siberia is described, revealing a primitive stage in the evolution of the neornithine condition. Expand
Abstract A new Early Cretaceous enantiornithine bird, Eocathayornis walkeri, gen. et sp. nov. is reported from Liaoning, northeast China. It is about the size of Cathayornis but is more primitive.Expand