Scientists recently discovered lumps of amber from the Cretaceous period in Africa. It doesn't stop there, they weren't just boring old (~95 million years old!) lumps of fossilised tree resin, they contained very well preserved insects. These insects were flying and crawling around when the dinosaurs were walking the earth, so in a sense it's like looking back in time. Some of them have been extinct for ages (literally), and others provide valuable insight into the ancestry of our modern insects. I would provide pictures of these, but I have a feeling the pictures are copyrighted by DiscoveryNews, so I'll post a link to their page instead.