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Kompsornis
''Kompsornis'' (meaning "elegant bird") is an extinct genus of avialan dinosaurs that lived during the Early Cretaceous period of China. The type and only known species is ''Kompsornis longicaudus''; the specific name means "long-tailed". It is known from only a single fossil specimen from the Jiufotang Formation. ''Kompsornis'' was closely related to the well-known ''Jeholornis'', another long-tailed avialan from China, but differs from it in features of its skeleton, particularly the fusion and growth rate of its bones. Like other jeholornithiforms, ''Kompsornis'' was a long-tailed avialan with long wings and possessed little or no teeth, with none identified in the single specimen of ''Kompsornis''. Classification ''Kompsornis'' was described and named by Wang and colleagues in 2020 from the sole specimen AGB-6997, an articulated complete skeleton preserved on a single slab, and was recognised as a jeholornithiform avialan. Their description included a comprehensive comparison ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jeholornithidae
Jeholornithidae is a family of avialan theropods whose taxonomy is controversial, whose remains are found in fossil deposits of what is now China. The controversy stems from whether most of the taxa in the group are just specimens of '' Jeholornis'', as well as if the group is monophyletic at all. In the description of '' Kompsornis'' the authors Wang ''et al''. (2020) found moderate support in the monophyly of the group, placing them as basal avialans and sister to Pygostylia. No phylogenetic In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical dat ... definitions for these groups were provided by Zhou and Zhang, but a topological definition was provided in 2020 by Wang and colleagues where Jeholornithiformes was defined as "the most inclusive clade containing ''Je. prima'' but excluding th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jeholornis
''Jeholornis'' (meaning "Jehol bird") is a genus of avialan dinosaurs that lived between approximately 122 and 120 million years ago during the early Cretaceous Period in China. Fossil ''Jeholornis'' were first discovered in the Jiufotang Formation in Hebei Province, China (in what was previously Rehe Province, also known as Jehol—hence the name) and additional specimens have been found in the older Yixian Formation. ''Jeholornis'' had long tails and few small teeth, and were approximately the size of turkeys,Holtz, Thomas R. Jr. (2008) ''Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages'Supplementary Information/ref> making them among the largest avialans known until the Late Cretaceous. Their diet included seeds of cycads, ''Ginkgo'' or similar plants. Description ''Jeholornis'' were relatively large, basal avialans, with a maximum adult length of up to 75 cm (2.5 ft) and an estimated weight of 2.27-9.1 kg (5-20 lbs). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jeholornis Palmapenis
''Jeholornis'' (meaning "Jehol bird") is a genus of Avialae, avialan dinosaurs that lived between approximately 122 and 120 million years ago during the early Cretaceous Period in China. Fossil ''Jeholornis'' were first discovered in the Jiufotang Formation in Hebei Province, China (in what was previously Rehe Province, also known as Jehol—hence the name) and additional specimens have been found in the older Yixian Formation. ''Jeholornis'' had long tails and few small teeth, and were approximately the size of Turkey (bird), turkeys,Holtz, Thomas R. Jr. (2008) ''Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages'Supplementary Information/ref> making them among the largest avialans known until the Late Cretaceous. Their diet included seeds of cycads, ''Ginkgo'' or Spermatophyte, similar plants. Description ''Jeholornis'' were relatively large, Basal (phylogenetics), basal avialans, with a maximum adult length of up to 75 cm (2.5 ft) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
