catagraph

noun catagraphs

1. obsolete A rough draft of a picture; an outline or sketch. till to A picture's first rude catagraph, the art Of an ingenious pencil doth impart Each complement of skill;
2. obsolete A brief, incomplete description; an outline. We have yet another to describe in our catagraph of the genus—the Snout. This is a nose concerning which there can be no mistake.
3. A structure made from the traces of canals or cavities believed to be produced by cyanophytes or bacteria during the Late Precambrian and Lower Cambrian eras. It is interesting that oncolites and catagraphs occur abundantly in limestones of the Schwarzkalk Limestone Member of the Kuib is Formation.