Columbia subject headings:
Orthoptera, Fossil.
Orthoptera--Phylogeny.
Phasmatoptera, Fossil.
Phasmatoptera--Phylogeny.
Harvard subject headings:
Orthoptera, Fossil
Orthoptera--Phylogeny.
Phasmatoptera, Fossil.
Phasmatoptera--Phylogeny.
Princeton subject headings:
Orthoptera, Fossil.
Phylogeny.