caption: Types of Fossils When an organism decays it leaves a cavity known as a mould. When the cavity is later filled by other material a cast is formed.
exif: {"Image DocumentName": "Types of Fossils When an organism decays it leaves a cavity known as a mould. When the cavity is later filled by other material a cast is formed.", "Image ImageDescription": "Impression of the hard exoskeleton of a trilobite that lived during the Cambrian Period, about 500 mya.", "Image XResolution": "200", "Image YResolution": "200", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}