|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Artiodactyla - Merycoidodontidae
It was recombined as Pronomotherium madisonium by Douglass (1907) and Thorpe (1937); it was recombined as Brachycrus madisonius by Schultz and Falkenbach (1940); it was synonymized subjectively with Brachycrus laticeps by Kelly and Lander (1988); it was considered a nomen vanum by Lander (1998).
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.