Under his leadership, an influential classification of North American Indian languages was published.

The classification was first published by J.A. Forrest et al. in the Lancet in 1974.

However, a formal classification was published alongside the 2009 revision in which the flowering plants form the Subclass Magnoliidae.

In 2011, a new classification of this superfamily was published by Bouchet et al.

In his Renaissance du Gbe (1988), the internal classification of Gbe was published in full for the first time.

Lichine's classification was published in 1962 and revised in 1966.

The first classification of specimens was published by George Robert Waterhouse, describing the species in 1836 and the family in 1841.

The classification of this species was published by Calaway H. Dodson in Selbyana, 1: 128.

This French-American-British classification was published in 1976, and revised in 1982.

In 2006 a classification was published that assigned 7 groups to the primitive achondrites, but the classification remains controversial.