A carboniferous forest during the Carboniferous period with club mosses, ferns and horsetails
{"Image ImageDescription": "An artist's impression of a Carboniferous  forest. The  Carboniferous period extended from 345 to 280 million years ago  and  is  characterised  by  the abundance  of  primitive  vascular  plants such as club mosses,  ferns and horsetails.   These  often reached   a  height   of   15  to  20  metres  and contributed  largely  to  the  formation  of  coal seams.   The  fauna  consisted  mainly of insects, freshwater molluscs, fishes and some amphibians.", "Image Orientation": "Horizontal (normal)", "Image XResolution": "300", "Image YResolution": "300", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop Elements 7.0 Windows", "Image DateTime": "2010:10:22 11:07:36", "Image Copyright": "LUDEK PESEK/SCIENCE PHOTO LIBRARY", "Image ExifOffset": "688", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "826", "Thumbnail JPEGInterchangeFormatLength": "6750", "EXIF ColorSpace": "Uncalibrated", "EXIF ExifImageWidth": "640", "EXIF ExifImageLength": "395"}