Cornovii (Cornwall) Dumnoniorum (present day Exeter), it is likely that he only listed Roman places, not purely native sites. Of these, there has been speculation that Voliba might be a place in Cornwall and Tamara is assumed to be on the River Tamar, the border between Cornwall and Devon. Ptolemy's list is supplemented by the problematical Ravenna Cosmography, which lists sixteen names before Isca Dumnoniorum (which is listed as "scadum namorum", showing some of the problems of this source) and which have therefore been assumed to be west of Exeter. Several have been identified as most likely in Devon, leaving "purocoronavis" (the
Kansas City Southern de México KCSM includes of track, serving northeastern and central Mexico and the port cities of Lazaro Cardenas, Tampico, and Veracruz among others. 11 of 14 of Mexico's auto assembly plants, plus two more under construction, are located on the railroad. Automobile traffic (autos and parts) accounted for 9% of the 2012 total carloads. Kansas City Southern de México Kansas City Southern de México (KCSM), formerly Transportación Ferroviaria Mexicana (TFM), is the name of a company dedicated to freight transportation using rail in the northeastern part of Mexico. KCSM is fully owned and operated by Kansas City Southern, who owns its own