Biological specimens play an important role in cultural exchange, science popularization, scientific research and economic window, but the preparation and preservation technology system of biological specimens is rela...Biological specimens play an important role in cultural exchange, science popularization, scientific research and economic window, but the preparation and preservation technology system of biological specimens is relatively unsafe and inefficient. Mold grows seriously on animal specimens, which is not only harmful to human beings’ health and environment, but also is one of the factors that restricts the development of the natural history museums where these specimens are kept. This paper identified the mold species of animal specimens by PCR with ITS primers, bio-micro-scopic observation, sequencing and phylogenetic tree analysis. The results showed the mold of animal specimens mainly belonged to Aspergillus and Neurospora. This study established the foundations of controlling and restoring the mold that infected animal specimens and guided a new methodology of preparation and environmental friendly exhibition for animal specimens.展开更多
类黄杞属(Palaeocarya Saporta,1873,emend.Manchester,1987)隶属于胡桃科,是一个化石属,典型特征为翅果具有三裂片。该属的化石记录非常丰富,在北半球的新生代地层中被广泛报道。在中国,类黄杞属的化石记录主要见于海南、广西、吉林和...类黄杞属(Palaeocarya Saporta,1873,emend.Manchester,1987)隶属于胡桃科,是一个化石属,典型特征为翅果具有三裂片。该属的化石记录非常丰富,在北半球的新生代地层中被广泛报道。在中国,类黄杞属的化石记录主要见于海南、广西、吉林和云南。本文描述了发现于广东茂名盆地晚始新世和早渐新世地层中的类黄杞属果化石4种,分别为:Palaeocarya yunnanensis San-Ping Xie et Bai-Nian Sun,P.guangxiensis Li et Chen Y.F.,P.gaolingensis Yun-Fa Chen,P.hispida H.H.Meng et Z.K.Zhou。这是迄今广东首次发现类黄杞属大化石,表明在晚始新世时类黄杞属植物即已分布到我国低纬度亚热带地区,并开始了多样性的演化。展开更多
The Guanshan Fauna is a soft-bodied fauna dominated by arthropods （including trilobites, trilobitoides, Tuzoia, Isoxys, and bradorids） in association with priapulids, brachiopods, anomalocaridids, vetulicoliids, spo...The Guanshan Fauna is a soft-bodied fauna dominated by arthropods （including trilobites, trilobitoides, Tuzoia, Isoxys, and bradorids） in association with priapulids, brachiopods, anomalocaridids, vetulicoliids, sponges, chancellorids, and echinoderms. This paper reports and describes a new arthropod from the yellowish green mudstone at the lower part of the Wulongqing Formation, Canglangpuan Stage, Lower Cambrian in Kunming, Yunnan, China. The stratigraphic and geographic distribution, classification, fossil preservation, life style of this new arthropod and comparisons with other fossil arthropods are also discussed in details. The discovery and research of the non-mineralized arthropod, Guangweicaris Luo, Fu et Hu gen. nov. from the Guanshan Fauna adds new members to the taxonomic list and provides new information to the evolution of early arthropods. Furthermore, this study would shed new light into the ＂Cambrian Explosion＂ and the evolution of early life.展开更多
A new palaeoscolecid, Guanduscolex minor Hu, Luo et Fu gen. et sp. nov., with preserved soft parts of introvert and intestines comes from the Lower Cambrian Guanshan fauna of Yunnan, South China. Microstructural detai...A new palaeoscolecid, Guanduscolex minor Hu, Luo et Fu gen. et sp. nov., with preserved soft parts of introvert and intestines comes from the Lower Cambrian Guanshan fauna of Yunnan, South China. Microstructural details of the cuticle revealed by scanning electron microscopy （SEM） show that each annulation bears three rows of plates and each plate bears 9-10 marginal and 4-5 central nodes. This discovery sheds new light on the relationships and evolutionary pathway of the palaeoscolecids and other early priapulids.展开更多
文摘Biological specimens play an important role in cultural exchange, science popularization, scientific research and economic window, but the preparation and preservation technology system of biological specimens is relatively unsafe and inefficient. Mold grows seriously on animal specimens, which is not only harmful to human beings’ health and environment, but also is one of the factors that restricts the development of the natural history museums where these specimens are kept. This paper identified the mold species of animal specimens by PCR with ITS primers, bio-micro-scopic observation, sequencing and phylogenetic tree analysis. The results showed the mold of animal specimens mainly belonged to Aspergillus and Neurospora. This study established the foundations of controlling and restoring the mold that infected animal specimens and guided a new methodology of preparation and environmental friendly exhibition for animal specimens.
文摘类黄杞属(Palaeocarya Saporta,1873,emend.Manchester,1987)隶属于胡桃科,是一个化石属,典型特征为翅果具有三裂片。该属的化石记录非常丰富,在北半球的新生代地层中被广泛报道。在中国,类黄杞属的化石记录主要见于海南、广西、吉林和云南。本文描述了发现于广东茂名盆地晚始新世和早渐新世地层中的类黄杞属果化石4种,分别为:Palaeocarya yunnanensis San-Ping Xie et Bai-Nian Sun,P.guangxiensis Li et Chen Y.F.,P.gaolingensis Yun-Fa Chen,P.hispida H.H.Meng et Z.K.Zhou。这是迄今广东首次发现类黄杞属大化石,表明在晚始新世时类黄杞属植物即已分布到我国低纬度亚热带地区,并开始了多样性的演化。
基金This study was supported by the Major Basic Research Project of the Ministry of Science and Technology of China （No. 2002CCA03300） the National Natural Science Foundation of China （No. 40672004）+1 种基金 the National ＂973＂ Project （No. 2006CB806401）the jointproject between the Yunnan Institute of Geological Science and the Shenzhen Palaeontological Museum （No. YIGS- 2006-01）.
文摘The Guanshan Fauna is a soft-bodied fauna dominated by arthropods （including trilobites, trilobitoides, Tuzoia, Isoxys, and bradorids） in association with priapulids, brachiopods, anomalocaridids, vetulicoliids, sponges, chancellorids, and echinoderms. This paper reports and describes a new arthropod from the yellowish green mudstone at the lower part of the Wulongqing Formation, Canglangpuan Stage, Lower Cambrian in Kunming, Yunnan, China. The stratigraphic and geographic distribution, classification, fossil preservation, life style of this new arthropod and comparisons with other fossil arthropods are also discussed in details. The discovery and research of the non-mineralized arthropod, Guangweicaris Luo, Fu et Hu gen. nov. from the Guanshan Fauna adds new members to the taxonomic list and provides new information to the evolution of early arthropods. Furthermore, this study would shed new light into the ＂Cambrian Explosion＂ and the evolution of early life.
文摘A new palaeoscolecid, Guanduscolex minor Hu, Luo et Fu gen. et sp. nov., with preserved soft parts of introvert and intestines comes from the Lower Cambrian Guanshan fauna of Yunnan, South China. Microstructural details of the cuticle revealed by scanning electron microscopy （SEM） show that each annulation bears three rows of plates and each plate bears 9-10 marginal and 4-5 central nodes. This discovery sheds new light on the relationships and evolutionary pathway of the palaeoscolecids and other early priapulids.
