EARLY VERTEBRATE FOSSILS FROM THE EARLY DEVONIAN OF ZHAOTONG DISTRICT, NORTHEASTERN YUNNAN

Astothegaleaspids,thePosongchongFormationofZhaotongDistrictismostsimilartothePingyipoFormationofJiangyou,Sichuan.BothLungmenshanaspisandSanqiaspisareexclusivelyfoundinthesetworegions,indicatingthepresenceofbiogeographicconnection.PaleontologicStudiesSubclassGaleaspidaTarlo,1967orderHuananaspiformesJanvier,l975FamiIySanqiaspididaeLiu,l975GenusSanqiasPisLiu,l975TyPespeciesSanqiasPisrostrataLiul975.ReferredspeciesSanqiasPiszhaotongensisLiul97iEmendeddiagnosisCephalicshieldnarrow,rou…     

云南种子植物分布新记录

报道了云南新记录种子植物10种7变种1变型,隶属于9科16属,即柔毛泡花树、山青木、白毛四照花、缙云四照花、沙梾、小叶臭味新耳草、纤枝兔儿风、小苦荬、兔儿风蟹甲草、华合耳菊、纤细半蒴苣苔、尾叶黄芩、长唇筒冠花、南川鼠尾草、短叶虾脊兰、带唇兰、类头状花序藨草和细杆筇竹等。     

ZHAOTONGASPIS JANVIERI GEN.ET SP.NOV.,A GALEASPID FROM EARLY DEVONIAN OF ZHAOTONG,NORTHEASTERN YUNNAN

ThefirstearlyvertebratedescribedfromtheDevonianofZhaotong,northeast-ernYunnan(Fig.i),wasthegaleaspidSanqiaspiszhaotongensis(Liu,i975).Thefish-b6aringhorizonwasthoughttobelongtothe"CuifengshanFormation",thatis,Pragianinage,incomparisonwiththetypelocalityofthisformationintheQujingdistrict,Yunnan.Liaoctal.(l978)consideredthatitwouldbemoreappro-priatetonametheh0riz0nasthePosongchongFormation,sinceithasthesamelitho1ogyandfaunaastheP0s0ngchongFormationintheWenshandistrict,Yunnan.Thissuggesti0…     

云南早泥盆世一流线型盔甲鱼及其分类学与古生态学意义(英文)

记述了云南昭通早泥盆世布拉格期坡松冲组华南鱼目一新属、新种——剑裂甲鱼(Rhegmaspis xiphoidea gen.et sp.nov.)。新属的主要特征是:具有鱼雷形头甲,细长吻突,眶孔位于头甲腹侧位,鳃穴向头甲腹面弯曲,角、内角和腹环丢失。鉴于以上特征,新属被归到了包括鸭吻鱼和乌蒙山鱼在内的鸭吻鱼科。根据新材料提供的信息,修订了鸭吻鱼科,包括鸭吻鱼和乌蒙山鱼的鳃穴、腹环、角、内角等特征。裂甲鱼属是该地区发现的第一个具有流线形体型的盔甲鱼类,指示了该地区一些盔甲鱼类可能开始了一种营上底栖的生活方式,具有更加主动的取食行为。新属的发现不仅丰富了该地区华南鱼目的多样性,而且提供了盔甲鱼类在早泥盆世布拉格期通过占据新的生态位而发生的最后一次辐射演化的证据。     

昭通地区野生猕猴桃资源及其利用评价

重点介绍了昭通地区野生猕猴桃资源的分布种类,同时对这些种类的利用进行了评价。     

滇东北昭通箐门的泥盆纪珊瑚（二）——中泥盆世晚期的四射珊瑚

云南省昭通市东北郊箐门出露了一条比较完整的泥盆系浅海相地层剖面,下、中、上三个统均有出露,浅海底栖生物化石丰富,研究基础也相对较好,是研究滇东北地区泥盆纪地层的一条理想剖面。由于地层剖面比较长,沉积厚度比较大,此前我们已经描述了早泥盆世和中泥盆世早期的四射珊瑚,本文继续描述该剖面的中泥盆世晚期的地层及其四射珊瑚,讨论它们的地层划分、珊瑚群对比与古生物地理。至于晚泥盆世的珊瑚,由于篇幅的关系,我们拟另文继续描述。     

Palaeoenvironment examination of the terminal Miocene hominoid locality of the Zhaotong Basin,southwestern China,based on the rhinocerotid remains

Anatomic modification in evolution process of mammals was closely correlated with the environmental changes, and become the powerful evidence for reconstructing the palaeoenvironment shaped their evolution. Rhinocerotid fossils are important indicators of the ecosystems inhabited by the mammalian faunas. Here, we first described remains of two rhinocerotids from the terminal Miocene Zhaotong Basin, the most recent hominoid locality in South China, including Acerorhinus lufengensis and Rhinocerotini gen. et sp. indet. New remains of A. lufengensis display a short crochet and antecrochet, expanded lingual cones, and rounded labial wall of the trigonid and talonid. These characteristics demonstrate its feeding habits of grazing brush and high grass. The limb bones of Rhinocerotini gen. et sp. indet. enable to live in an open habitat in having the following characteristics: the Mc II facet of Mc III is large, oval, flattened, and nearly vertical in direction; the femur exhibits a very large trochanter tertius and two nearly parallel asymmetrical ridges of the distal patella trochlea. The rhinocerotid fossils described herein provide a substantial evidence of the presence of mosaic environment, and the grassland should patches within or along the margin of the forest in the terminal Miocene Shuitangba locality.     

The proteomic characterization of ram sperm during cryopreservation analyzed by the two-dimensional electrophoresis coupled with mass spectrometry

The aim of this study was to analyze the effects of the cryopreservation process on the protein profile of ram sperm using two-dimensional electrophoresis (2-DE) coupled with mass spectroscopy. Semen was collected from five rams and cryopreserved in a Tris-based extender supplemented with glycerol and egg yolk as the main cryoprotectants. The fresh and post-thaw sperm total proteins were extracted and purified, followed by the 2-DE. The differential proteins in the stained gel were determined by mass spectrometry. The results indicated that there were 39 differential proteins between fresh sperm and frozen-thawed sperm. Among these proteins, the abundance of 28 proteins in fresh sperm was higher than those in post-thaw sperm (P < 0.05). However, 11 proteins in post-thaw sperm were up-regulated instead. The gene ontology (GO) analysis showed that most of differential proteins were implicated in cellular process, metabolism and regulation of the biological process. The networks of protein-protein interaction indicated a strong interaction among these differential proteins, which may be involved in sperm metabolism, acrosomal function, sperm motility, and reducing ROS level. In conclusion, the cryopreservation process modifies the proteome of ram sperm, which may be directly associated with ram sperm cryodamage, consequently influencing their fertility. Additionally, these differential proteins can be used as biomarkers for evaluation of frozen ram semen quality.