科达目

So far as we know, the ants which rely on fungi as a dominant food source belong to Attini and Solenopsidini, while most attine cultivar fungi are members of genus Leucoagaricus and Leucocoprinus (Basisiomycotina: Agaricales: Lepiotaceae), with a minority belonging to members of Ascomycotina and Deuteromycotina.

蚂蚁与真菌间的共生关系已具有长达5000多万年的协同进化历史，迄今已知的与真菌共生的蚂蚁主要为爱特蚁族和火蚁族的种类，而蚂蚁培养的真菌主要属于担子菌亚门伞菌目环柄菇科白环蘑属和白鬼伞属，少数种类属于子囊菌亚门和半知菌亚门。

Some giant horsetails and Cordaitales reached nearly 100 feet.

有些巨大的木贼类和科达目植物高度达到一百英尺。

The sequence variation analyses showed that there are 236 variable and 221 parsimony-informative in the aligned 605 nucleotide sites, in addition, the relative frequenencies of four nucleotides were not equal an this fact showed that the base compositions were biased. The results of phylogenetic analyses showed:(1) the phylogenetic relationships of the Cypraeidae taxa was basically in consistent with morphology-based ones;(2)Cypraeovulinae was monophyletic in all trees, whereas Nariinae and Cypraeinae were not;(3)the monophylies of Mauritia, Palmadusta, Erosaria, Monetaria, Staphylaea and Pustularia were strongly supported by molecular data;(4)Meyer's speculation that Chelycypraea came out from Luria were also supported.

结果表明：(1)宝贝科28种动物的分子系统树大部分与形态学分类一致；(2)在系统树上，疹贝与鼻贝亚科的其它分类群的距离相隔较远，提示它们之间有较远的亲缘关系，建议将疹贝属列入宝贝亚科；(3)卵宝贝亚科包括希达贝、脊焦贝、筛目贝、拟枣贝、焦掌贝以及呆足贝等共计15个属，它们在系统树上构成独立的一个大支系，构成单系群；(4)支持Meyer将龟甲贝从禄亚贝总属中分离出来的观点，但龟甲贝和林西那贝之间的系统发生关系及其分类地位还有待于进一步探讨。

Spinosaurus（Saurischia,Theropoda,Tetanurae,Spinosauroidea）,Early to early Late Cretaceous,up to 17m?

棘龙（蜥臀目，兽脚类，坚尾龙类，棘龙超科），白垩纪早期到晚白垩纪早期，体长最长可达17米。

Carcharodontosaurus（Saurischia,Theropoda,Tetanurae,Carnosauria,Carcharodontosauridae）,Early to early Late Cretaceous,up to 14m

鲨齿龙（蜥臀目，兽脚类，坚尾龙类，食肉龙类，鲨齿龙科），白垩纪早期到晚白垩纪早期，体长可达14米。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。