Editing 4-8-0 (section)

==Overview==
The first {{nowrap|4-8-0}} locomotive is believed to have been the ''Centipede'', a tender locomotive built by [[Ross Winans]] in 1855 for the [[Baltimore and Ohio Railroad]] in the United States of America, where it remained in service for nearly twenty years. It appears to have been delivered in a cab-forward type of configuration that was modified to a [[Camelback locomotive#Development|Camel]] configuration in 1864.<ref name="Carling">Carling, D. Rock (1972). ''4-8-0 Tender Locomotives''. Drake Publishers Inc. {{ISBN|978-0-87749-150-7}}</ref> On a Camel locomotive the cab was mounted atop the boiler, unlike the later Camelback locomotive whose cab straddled the boiler which first appeared around 1877.<ref>[[:en:Camelback locomotive#Development|Camelback locomotive – Development]]</ref>

[[File:CPRR 229 1885 Painting.png|thumb|CPR no. 229, the ''Mastodon'' of 1882]]
The nickname '''Mastodon''' is often mistakenly used to describe the {{nowrap|4-8-0}} wheel arrangement and was derived from the unofficial name of the first {{nowrap|4-8-0}} locomotive of the [[Central Pacific Railroad]] in the United States, the wood-fired [[Mastodon (steam locomotive)|CPR no. 229]], which was designed and built in 1882 by the railroad's master mechanic, Andrew Jackson (A.J.) Stevens, at the railroad's Sacramento works in California.<ref name="Carling"/> However, several period publications<ref name="LCyclo" /><ref name="railroad pocket-book" /> instead use the nickname Mastodon to refer to the [[4-10-0]]. These publications refer to the {{nowrap|4-8-0}} as the '''Twelve-wheeler'''.