汝阳盆地是豫西地区的一个中—新生代断陷盆地,自2006年以来发现了一个以巨型蜥脚类恐龙为代表的恐龙动物群.本文描述了近期发现于汝阳盆地下白垩统郝岭组中的若干恐龙蛋蛋壳碎片.基于以下对蛋壳宏观形态和显微特征的分析,这些蛋壳碎片可以归入长形蛋科(Elongatoolithidae)的长形蛋属(Elongatoolithus):蛋壳外表面具分散瘤点状或线性脊状的纹饰;蛋壳自内而外分为锥体层和柱状层,二层之间的界线不清晰;锥体层中锥体排列紧密;柱状层中具波浪状的平行生长纹.这一发现代表了长形蛋属在早白垩世地层中的首次记录,进一步拓展了该蛋属的地史和古地理分布.由以往已知的化石关联推测,这些蛋壳可能与该层位中的窃蛋龙类如刘店洛阳龙(Luoyanggia liudianensis)等具有相关性,表明汝阳盆地在早白垩世晚期具有适宜该类恐龙生存与繁殖的环境.

Moganopterus zhuiana Lü et al.,2012 was erected as a member of the Boreopteridae,which was questioned by different researchers shortly after the publication.Although the new assignment to the Ctenochasmatidae is widely accepted by pterosaur researchers,some characteristics still require a detailed description.Here,the holotype of this taxon is restudied,and some ambiguous characteristics are re-identified.The diagnosis of this taxon has been revised as the following:a large ctenochasmatid pterosaur,which can be distinguished from other members of this clade by a single autapomorphy:an elongated rod-like parietal crest that extends posterodorsally,forming an angle of about 15° with the ventral margin of the skull.This taxon can be further distinguished from other ctenochasmatids on the basis of the following combination of characteristics:straight occlusal surfaces of the upper and low jaws;presence of a low premaxillary crest confined anterior to the nasoantorbital fenestra;rostrum about two thirds of the skull length;nasoantorbital fenestra occupying slightly more than 20％of the skull length;about 100 slender teeth;and a mid-cervical length/width ratio of about 7.The wingspan of M.zhuiana has been re-estimated according to a simple regression equation for wingspan versus skull length in ctenochasmatids.It confirms that M.zhuiana,although smaller than previous thought,is still the largest known ctenochasmatid.When comparing the sizes of ctenochasmatids in the Jurassic and Cretaceous,ctenochasmatids showed a rough tendency to increase their sizes.

栾川地区脊椎动物化石赋存在上白垩统秋扒组的中下部,时代可能为坎潘期晚期,以小型兽脚类恐龙骨骼为主.化石点大多分布在潭头盆地北部边缘2 km的范围,搬运距离不远.栾川动物群的化石组合包括至少8种恐龙(其中已命名6种)、2种蜥蜴类、2种哺乳类及数量众多的恐龙蛋等,代表一典型晚白垩世动物群,称为栾川动物群.栾川动物群与中国南方的赣州盆地和蒙古Nemegt盆地晚白垩世恐龙动物群具有很高的相似性,均以兽脚类恐龙为主,兼有其他脊椎动物组合.栾川动物群的研究对了解东亚晚白垩世恐龙动物群的生态面貌、恐龙多样性演化,以及环境变化对恐龙迁徙和灭绝的影响等具有重要意义.

河南淅川盆地的恐龙蛋发现与研究始于1974年,淅川盆地恐龙蛋具有非常高的多样性,共计发现4个蛋科、6个蛋属、6个蛋种,尤其以树枝蛋类最为丰富。近年来,河南地质博物馆对全省地质遗迹调查过程中,在淅川盆地再次有新的恐龙蛋类型的发现,本文对其中的部分标本进行记述,根据壳单元呈多分叉的不规则树枝状,蛋壳厚度为1.62～1.74 mm,锥体间隙明显,壳单元自锥体上部开始出现分枝,蛋壳中部大多具有3～4个分枝,近蛋壳外表面形成融合层,蛋壳具有复杂的气孔系统等特征区别于其他类型的树枝蛋类,建立一新蛋种:大石桥树枝蛋（Dendroolithus dashiqiaoensis oosp. nov.）。通过对淅川盆地恐龙蛋分类与对比、不同类型恐龙蛋在地层中的分布研究,将有助于盆地内白垩纪红层的划分,也将为秦岭东段各盆地中同一时期红层的划分与对比、古地理、古环境和古气候等研究提供更加翔实的古生物学证据。

The new gigantic sauropod dinosaur Ruyangosaurus giganteus gen. Et sp. Nov. From the early Late Cretaceous Mangchuan Formation of Ruyang, Henan, China is described. It is characterized by a lower neural spine, lack of centroprezygapophyseal lamina, a large, irregularly triangular deep fossa on the lateral surface of the neural arch, the prezygodiapophyseal lamina oriented anteroposteriorly, and a robust tibia, some 127cm in length. The discovery of Ruyangosaurus indicates that a higher diversity of sauropod dinosaurs occurred during the early Late Cretaceous than previously thought.