《地球上古生物图片.pptVIP

地球上古生物图片 震旦纪 植物以球藻群为主，动物以节肢动物和腔肠动物为主 寒武纪 三叶虫，距今5.6亿年前的寒武纪就出现,5亿--4.3亿年前发展到高峰,至2.4亿年前的二迭纪完全灭绝 ，是最具代表性的远古生物 奥陶纪 鹦鹉螺，自奥陶纪生长到现在，现存于印度洋和太平洋 志留纪 珊瑚，主要生长于水温大于20度的亚热带海区 泥盆纪 腔棘鱼，生长于3.5亿年前的11000米深的海底，存在时间长达4亿年 石炭纪 石炭纪生物与泥盆纪相似，四射珊瑚以三带型为代表，腕足类以长身贝科最突出，深水生活的棱菊石类进一步发展 二叠纪 脊椎动物中的两栖类仍很繁盛，还出现了原始的爬行类。海生无脊椎动物以珊瑚、腕足类和菊石类最重要。海百合和苔藓虫十分繁盛。 三叠纪 鳍龙类（含幻龙、肿肋龙、楯齿龙等）、海龙类、鱼龙类及原龙类等 侏罗纪 侏罗纪是真正的恐龙时代，陆上以霸王龙为代表，海里以蛇颈龙为代表 霸王龙 霸王龙，又称暴龙，成年霸王龙体重约7吨，身长13米，性情凶悍而强壮敏捷，称雄大陆 蛇颈龙 白垩纪 白垩纪是一个生物界显著变革的时期 ，恐龙灭绝，被子植物出现，哺乳动物开始发展 古近纪 哺乳动物迅速演化，出现了蝙蝠与鯨类，海洋无脊椎动物发展迅速 新近纪 哺乳动物和被子植物大发展时期，人类出现是这个时期重大事件 第四纪 生物进化基本成型 * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Cr