from the GNU version of the Collaborative International Dictionary of English
- n.pl. An extensive division of arthropods comprising all those which breathe by tracheæ, as distinguished from Crustacea, which breathe by means of branchiæ.
from The Century Dictionary and Cyclopedia
- n. Same as Trachearia.
Sorry, no etymologies found.
Some of the lower articulata (both crustacea and tracheata).
The annelids were supposed to be the direct ancestors, not only of the crustacea and tracheata, but also of the vertebrates.
None of the articulates, either annelids or arthropods (crustacea and tracheata), show any trace of this type of organisation.