This thematic map shows the distribution, density and types of rodents and ruminants found around the world. The upper map focuses on rodents and the lower map focuses on ruminants. The darker shading represents regions that are more densely populated, and the colored lines indicate the areas in which a specific family can be found, which are outlined in a table at bottom center of each map. The vignettes along the sides of the sheet show the types of rodents and ruminants to be found on each continent, and the graphic mountain chart both illustrates and lists the types of animals found at various elevations.
Keith Johnson worked in conjunction with German Heinrich Berghaus to produce the Physical Atlas, the first truly comprehensive thematic atlas. The maps from this atlas made a huge impact on cartography in general and specifically on the graphic portrayal of geographical data.
References: Robinson, pp. 64-75.
Clean and bright with light toning along the edges of the sheet.