Parabohaiornis was first described and named by Min Wang, Zhong-He Zhou, Jingmai K. O'Connor and Nikita V. Zelenkov in 2014 and the type species is Parabohaiornis martini. The generic name combines the Latin prefix para, meaning "close to", with the generic name of Bohaiornis, the type genus of the Bohaiornithidae family, in reference to the morphological similarity between Parabohaiornis and other bohaiornithids. The specific name, martini, honors the late paleontologist Prof. Larry Dean Martin, for his contributions to the study of the evolution of birds.[1]
Parabohaiornis differs from all other known bohaiornithidenantiornitheans by possessing a combination of traits. It has three and four teeth on the premaxilla and maxilla, respectively. Unlike Longusunguis, Zhouornis and Sulcavis, its nasal bone lacks a maxillary process. Unlike Sulcavis and Bohaiornis, it lacks an intercondylar incisure on the tibiotarsus. In Parabohaiornis, the acromion process is straight, and is parallel to the scapular shaft, whereas in Longusunguis and Sulcavis this process is deflected dorsally. Parabohaiornis has a distinctive length ratio of the pygostyle to the third metatarsal of 0.92–0.99, in comparison to 1.06 in Longusunguis, 0.79 in Sulcavis, 0.66 in Zhouornis and an estimated ratio of 0.82 in Bohaiornis. Finally, while in other bohaiornthids the proximal phalanx is more than 80% the length of the penultimate phalanx of the fourth digit, in Parabohaiornis it is much shorter (less than 70%). The referred specimen of Parabohaiornis is indistinguishable from the holotype in morphology, possessing all postcranial traits that distinguish this genus from other bohaiornithids. Both specimen came from subadult individuals, the referred being more mature than the holotype, as evident by the absence or degree of fusion in some compound bones, such as the carpometacarpus, tibiotarsus and tarsometatarsus.[1]
Phylogenyedit
The phylogenetic position of Parabohaiornis was explored by Wang et al. (2014) using a data matrix that includes 56 avialan taxa, scored based on 262 morphological traits. Parabohaiornis was recovered as an advanced bohaiornithid, closely related to Bohaiornis whose specimens were collected at a nearby locality, also near the Lamadong Town. The cladogram below shows the phylogenetic position of Parabohaiornis among the Enantiornithes following this analysis.[1]
^ abcdeMin Wang; Zhong-He Zhou; Jingmai K. O'Connor; Nikita V. Zelenkov (2014). "A new diverse enantiornithine family (Bohaiornithidae fam. nov.) from the Lower Cretaceous of China with information from two new species" (PDF). Vertebrata PalAsiatica. 52 (1): 31–76.
parabohaiornis, extinct, genus, bohaiornithid, enantiornithean, dinosaur, known, from, early, cretaceous, liaoning, province, northeastern, china, contains, single, species, martini, temporal, range, early, cretaceous, preꞒ, scientific, classification, domain,. Parabohaiornis is an extinct genus of bohaiornithid enantiornithean dinosaur known from the Early Cretaceous of Liaoning Province northeastern China It contains a single species Parabohaiornis martini 1 ParabohaiornisTemporal range Early Cretaceous 120 3 Ma PreꞒ Ꞓ O S D C P T J K Pg N Scientific classification Domain Eukaryota Kingdom Animalia Phylum Chordata Clade Dinosauria Clade Saurischia Clade Theropoda Clade Avialae Clade Enantiornithes Family Bohaiornithidae Genus ParabohaiornisWang et al 2014 Type species Parabohaiornis martiniWang et al 2014 Contents 1 Discovery 2 Description 3 Phylogeny 4 ReferencesDiscovery editParabohaiornis was first described and named by Min Wang Zhong He Zhou Jingmai K O Connor and Nikita V Zelenkov in 2014 and the type species is Parabohaiornis martini The generic name combines the Latin prefix para meaning close to with the generic name of Bohaiornis the type genus of the Bohaiornithidae family in reference to the morphological similarity between Parabohaiornis and other bohaiornithids The specific name martini honors the late paleontologist Prof Larry Dean Martin for his contributions to the study of the evolution of birds 1 Parabohaiornis is known from the holotype IVPP V 18691 a nearly complete and partially articulated skeleton and skull and from the referred specimen IVPP V 18690 an articulated partial skeleton missing only the skull ulna radius and hands Both specimens are preserved in single slabs and are currently housed at the Institute of Vertebrate Paleontology and Paleoanthropology Beijing The specimens were collected at deposits near the Lamadong Town Jianchang County of the Liaoning Province from the Jiufotang Formation dating to the Aptian stage of the Early Cretaceous approximately 120 3 million years ago 1 Description editParabohaiornis differs from all other known bohaiornithid enantiornitheans by possessing a combination of traits It has three and four teeth on the premaxilla and maxilla respectively Unlike Longusunguis Zhouornis and Sulcavis its nasal bone lacks a maxillary process Unlike Sulcavis and Bohaiornis it lacks an intercondylar incisure on the tibiotarsus In Parabohaiornis the acromion process is straight and is parallel to the scapular shaft whereas in Longusunguis and Sulcavis this process is deflected dorsally Parabohaiornis has a distinctive length ratio of the pygostyle to the third metatarsal of 0 92 0 99 in comparison to 1 06 in Longusunguis 0 79 in Sulcavis 0 66 in Zhouornis and an estimated ratio of 0 82 in Bohaiornis Finally while in other bohaiornthids the proximal phalanx is more than 80 the length of the penultimate phalanx of the fourth digit in Parabohaiornis it is much shorter less than 70 The referred specimen of Parabohaiornis is indistinguishable from the holotype in morphology possessing all postcranial traits that distinguish this genus from other bohaiornithids Both specimen came from subadult individuals the referred being more mature than the holotype as evident by the absence or degree of fusion in some compound bones such as the carpometacarpus tibiotarsus and tarsometatarsus 1 Phylogeny editThe phylogenetic position of Parabohaiornis was explored by Wang et al 2014 using a data matrix that includes 56 avialan taxa scored based on 262 morphological traits Parabohaiornis was recovered as an advanced bohaiornithid closely related to Bohaiornis whose specimens were collected at a nearby locality also near the Lamadong Town The cladogram below shows the phylogenetic position of Parabohaiornis among the Enantiornithes following this analysis 1 Enantiornithes Protopteryx Elsornis Iberomesornis Euenantiornithes Longipterygidae Boluochia Longipteryx Shanweiniao Longirostravis Rapaxavis IVPP V 18631 Pengornis Eocathayornis Cathayornis Neuquenornis Gobipteryx Vescornis Eoalulavis Concornis Qiliania Eoenantiornithiformes Eoenantiornis Bohaiornithidae Shenqiornis Sulcavis Zhouornis Longusunguis Parabohaiornis BohaiornisReferences edit a b c d e Min Wang Zhong He Zhou Jingmai K O Connor Nikita V Zelenkov 2014 A new diverse enantiornithine family Bohaiornithidae fam nov from the Lower Cretaceous of China with information from two new species PDF Vertebrata PalAsiatica 52 1 31 76 nbsp Dinosaurs portal Retrieved from https en wikipedia org w index php title Parabohaiornis amp oldid 1220390248, wikipedia, wiki, book, books, library,
