|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
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.
|G. E. Budd and J. S. Peel 1998||Large, Xenusion-like lobopod, but differing in possessing rows of four trunk nodes instead of two, in the probable presence of annular nodes, and in the lack of fleshy limb outgrowths. Hardranax bears a pair of long, branched, probably frontal appendages that are not known from Xenusion.|