古脊椎动物学报2023，Vol.61Issue(2)：90-107,18.DOI:10.19615/j.cnki.2096-9899.230217
马氏副渤海鸟(鸟翼类:反鸟类)新标本对鸟类头骨早期演化的意义
A new specimen of Parabohaiornis martini(Avialae:Enantiornithes)sheds light on early avian skull evolution
摘要
Abstract
The Enantiornithes is the most speciose clade of Mesozoic avialans with over 60 named taxa reported from most continents that span the whole Cretaceous.Most of the fossil remains of this clade,as well as those of other early diverging avialans are preserved in two-dimensions.This complicates efforts to extract detailed anatomical information from the skull,in which the composite elements are delicate and thus not easily observable through conventional methods.The scarcity of well-preserved early avialan skulls,as well as the limited number of specimens that have been analyzed using computed tomography scanning,consequently circumscribes a large morphological gap in the fossil record during the transition from the heavy and akinetic dinosaurian skull to the lightweight and kinetic bird skull.Here,we present a three-dimensional digital reconstruction of the skull and part of the cervical vertebrae of a new specimen of the enantiornithine Parabohaiornis martini from the Early Cretaceous of China.Our results demonstrate that Parabohaiornis retains the plesiomorphic non-avialan dinosaurian temporal and palatal configurations,reinforcing the recent hypothesis that the temporal and palatal regions are evolutionarily conservative and that the akinetic skull has been conserved well into diversification of early branching avialans.关键词
反鸟类/鸟翼类/渤海鸟科/头骨/头骨可动性Key words
Enantiornithes/Avialae/Bohaiornithidae/cranium/cranial kinesis分类
生物科学引用本文复制引用
王敏..马氏副渤海鸟(鸟翼类:反鸟类)新标本对鸟类头骨早期演化的意义[J].古脊椎动物学报,2023,61(2):90-107,18.基金项目
国家自然科学基金杰出青年基金(批准号:42225201)、中国科学院前沿科学重点研究计划从"0到1"原始创新十年择优项目(编号:ZDBS-LY-DQC002)和腾讯科学探索奖资助.We thank YIN Pengfei,MIAO Song,and FENG Jiutong for helping in CT scanning.We thank Jingmai K.O'Connor and LI Zhiheng for constructive comments that help to improve the manuscript.This research is supported by the National Natural Science Foundation of China(42225201),the Key Research Program of Frontier Sciences,CAS(ZDBS-LY-DQC002),and the Tencent Foundation(through the XPLORER PRIZE). （批准号:42225201）
