Under the Whyte notation system, a steam locomotive that has a single-axle leading truck followed by four powered driving axles, and no trailing wheels. Its popular name is "Consolidation" as its appearance coincided with the consolidation of several Eastern coal railroads. The Consolidation was extremely popular, especially in the first quarter of the 20th century.

Under the Whyte notation system, a steam locomotive that has two leading wheels, four pairs of coupled driving wheels, and two trailing wheels.

Under the Whyte notation, a steam locomotive that has eight coupled driving wheels followed by four trailing wheels, with no leading wheels.

Under the Whyte notation system, a steam locomotive that has two leading wheels, eight coupled driving wheels, and six trailing wheels.

Under the Whyte notation system, a steam locomotive that has eight coupled driving wheels followed by two trailing wheels, with no leading wheels.

Under the Whyte notation system, a steam locomotive that has four leading wheels on a leading truck followed by four sets of coupled driving wheels, and no trailing wheels.

Under the Whyte notation system, a steam locomotive, with four axles connecting eight powered driving wheels, and no leading wheels or trailing wheels.

plural of 2-8-0

plural of 2-8-4

plural of 4-8-6