江苏白垩纪陆相层序地层研究

系统的探讨了区内白垩纪地层的划分与沉积相特征，深入研究了陆相地层的层序发育特征。指出，无论冲积扇、河流、三角洲或湖泊沉积的陆相地层层序均受地层基准面控制。地层基准面穿越旋回控制着陆相环境重大层序分布。根据不同时间间隔的基准面穿越旋回序次，将陆相层序划分为盆地充填层序、构造层序、层序、亚层序及小层序五个级别。每个层序根据基准面波动可划分为基准面上升沉积体系域和基准面下降沉积体系域，并可根据亚层序组的叠置特征进一步细分。根据上述陆相地层层序划分原理，作者将研究区白垩纪陆相地层划分为三个构造层序，并初步将葛村组划分为五个、浦口组四个、赤山组三个和泰州组三个沉积层序。     

A juvenile lizard specimen with well-preserved skin impressions from the Upper Jurassic/Lower Cretaceous of Daohugou, Inner Mongolia, China

Lizards are now relatively well known from the Yixian Formation of northeastern China. In this study, we describe a juvenile lizard from a fossil horizon at Daohugou, Inner Mongolia. These beds predate the Yixian Formation, and are probably Late Jurassic or earliest Cretaceous in age. The new specimen thus documents the first lizard material from the Daohugou locality and is the earliest lizard skeleton from China. Comparisons with developmental stages of modern lizards suggest the Daohugou lizard is a hatchling. Although tiny, the specimen is notable in preserving exquisite skin impressions showing the variation in scalation across the body, the shape and position of the cloacal outlet, and details of the manus and pes. These are the earliest recorded lepidosaurian skin traces. In its general proportions and the possession of paired frontals, the small Daohugou lizard resembles both the Yixian taxon Yabeinosaurus tenuis and the questionable Jeholacerta formosa, but it differs from the latter in scalation and, based on other characters, may be distinct from both.     

浙东南早白垩世火山—沉积岩系地层划分

浙东南下白垩统火山岩极为发育,岩石组合与浙江中部永康群差异甚大,称之为馆头组和朝川组似不合适。文成县峃口镇龙潭山(又称龙井山)剖面具代表性,拟以此部面为基础建立梅坪组和龙潭山组,合称文成群。与永康群对比,梅坪组大体相当馆头组,龙潭山组与朝川组和方岩组对比。     

浙江墩头盆地横山组孢粉化石的发现及其地层意义

浙江墩头盆地红色岩层中上部首获丰富的以Cassopllis为主(58.39—62.54％)伴有Exesipollenites(15.21—15.84％),Hsuisporites(0.56—0.62％),Cicatricosisporites(0—0.31％)等孢粉化石。该孢粉组合特征既与国内外晚侏罗世孢粉组合面貌差别较大,又与早白垩世中晚期孢粉组合面貌存在明显差异,显示了早白垩世早期孢粉组合的色彩。笔者认为这套红色岩层应归早白垩世早期横山组为宜。     

广丰盆地白垩纪红层及其地貌景观发育研究

广丰白垩纪盆地中沉积一套冲积扇相和湖相以红色为主的沉积岩系,其岩石类型为砾岩、砂砾岩、砂岩、粉砂岩、泥岩以及透镜状淡水灰岩.在盆地的西南部和东南部,受盆地边界断层和红层岩性制约,形成以复式单斜山、石寨、石蜂、峰林、石柱、石崖、巷谷、一线天、造型石等丹霞地貌景观类型,地貌发育处于壮年期.本文主要阐述广丰盆地红层、构造发育、丹霞地貌景观特征及其相互关系.     

The last polar dinosaurs: high diversity of latest Cretaceous arctic dinosaurs in Russia

A latest Cretaceous (68 to 65 million years ago) vertebrate microfossil assemblage discovered at Kakanaut in northeastern Russia reveals that dinosaurs were still highly diversified in Arctic regions just before the Cretaceous–Tertiary mass extinction event. Dinosaur eggshell fragments, belonging to hadrosaurids and non-avian theropods, indicate that at least several latest Cretaceous dinosaur taxa could reproduce in polar region and were probably year-round residents of high latitudes. Palaeobotanical data suggest that these polar dinosaurs lived in a temperate climate (mean annual temperature about 10°C), but the climate was apparently too cold for amphibians and ectothermic reptiles. The high diversity of Late Maastrichtian dinosaurs in high latitudes, where ectotherms are absent, strongly questions hypotheses according to which dinosaur extinction was a result of temperature decline, caused or not by the Chicxulub impact.     

The first definitive carcharodontosaurid (Dinosauria: Theropoda) from Asia and the delayed ascent of tyrannosaurids

Little is known about the evolution of large-bodied theropod dinosaurs during the Early to mid Cretaceous in Asia. Prior to this time, Asia was home to an endemic fauna of basal tetanurans, whereas terminal Cretaceous ecosystems were dominated by tyrannosaurids, but the intervening 60 million years left a sparse fossil record. Here, we redescribe the enigmatic large-bodied Chilantaisaurus maortuensis from the Turonian of Inner Mongolia, China. We refer this species to a new genus, Shaochilong, and analyze its systematic affinities. Although Shaochilong has previously been allied with several disparate theropod groups (Megalosauridae, Allosauridae, Tyrannosauroidea, Maniraptora), we find strong support for a derived carcharodontosaurid placement. As such, Shaochilong is the first unequivocal Asian member of Carcharodontosauridae, which was once thought to be restricted to Gondwana. The discovery of an Asian carcharodontosaurid indicates that this clade was cosmopolitan in the Early to mid Cretaceous and that Asian large-bodied theropod faunas were no longer endemic at this time. It may also suggest that the ascent of tyrannosaurids into the large-bodied dinosaurian predator niche was a late event that occurred towards the end of the Cretaceous, between the Turonian and the Campanian. Electronic supplementary material  The online version of this article (doi:) contains supplementary material, which is available to authorized users.     

宁镇山脉圌山火山岩系的时代归属

根据化石组合和火山岩的同位素年龄,并结合区域火山岩资料,本文厘定江苏镇江(?)山火山岩系的时代属早白垩世晚期至晚白垩世早期,而火山活动主要是在晚白垩世,进而论证了下扬子区在晚白垩世期间普遍有零星的酸性岩浆活动。     

江西峡江马埠地区Manica植物化石的发现及其意义

在峡江县马埠地区进行1：5万峡江县幅区调工作中，在原石溪组之下发现一套岩性底部为灰白色石英质砾岩与灰白色含砾石英砂岩互层，下部为猪肝，土黄，青灰色粉砂岩，含粉砂质泥岩，含碳质泥岩，间夹少量薄层细砂岩，发育平行层理，中部为浅灰色石英质砾岩与灰色粗中粒长石岩屑砂岩互层，上部为紫红色含角砾硫纹质弱熔结凝灰岩组合的地层，并采获植物化石Manica。其时代属早白垩世，其岩石地层单位划归石溪组下部。