described at URL: https://www.flickr.com/photos/ideonexus/7321628602/ operator: Flickr URL: https://live.staticflickr.com/7245/7321628602_8612a1d0e7_o.jpg
DescriptionTrigonias skeleton2.JPG English: Photograph of a cast of a fossil Trigonias skeleton taken at the North American Museum of Ancient Life. Date