"Diagnosis Small (53103kg) macraucheniid, similar in size to Cramauchenia normalis and Coniopternium andinum and smaller than Cullinia levis, previously thesmallestknown macraucheniine. The posteriormost border of the transverse processes of the atlas are posterior to the articular facets for the axis as in Macrauchenia but in contrast to Theosodon where the transverse processes are anterior to the articular facets for the axis. The articular facets for the atlas of the axis are dorsoventrally low in relation to its mediolateral width (WA/HA > 0.9) more similar to Macrauchenia than to Theosodon, in which these facets are markedly relatively higher. The ulna and radius are completely fused, and the radius presents a well-developed medial aliform expansion or flange similar to Promacrauchenia in its degree of expansion. However, the ulna-radius is wider mediolaterally at this point than the width of this element measured at the level of the distal articular surfaces (URA/URD > 1) similar to Macrauchenia but in contrast to what is seen in Promacrauchenia where URA/URD < 1. The cuneiform and unciform extend over the magnum proximally as in Macrauchenia but in contrast to Theosodon, where the cuneiform-magnum and unciform-magnum articulations are entirely lateral. The pisiform is greatly proximodistally expanded at the posterior end as in Cullinia, Promacrauchenia, Macrauchenia and Xenorhinotherium. The robust metapodials are proportionally similar in terms of relative length and width to Theosodon, in contrast to Cullinia levis, in which they are proportionally more slender and elongated." (Pschel et al, 2023)

Micrauchenia was named by Püschel et al. (2023). It is not extant.

It was assigned to Macraucheniinae by Püschel et al. (2023).