Stenomylus is an extinct genus of miniature camelid native to North America that is known from the Oligocene and Miocene epochs.

[2][3] Stenomylus was extremely diminutive compared to other ancient and modern camelids, standing only 2 feet (61 cm) tall on average.

The nasal bones, set quite far back in the skull, suggest the presence of a small proboscis or at least of muscular prehensile lips.

[1][6] The genus Stenomylus was first described by Peterson in 1907, on the basis of fossil remains found in lower Miocene soils of Nebraska.

[1] Stenomylus is a very specialized genus of camelids, classified in a separate subfamily, the Stenomylinae, which likely originated at the end of the Oligocene.