68, No. 4, Dec., 1985 Baetidae from Sri Lanka with Some Genera... Baetidae from Sri Lanka with Some General Remarks on the Baetidae of the Oriental Region (Insecta: Ephemeroptera) This is the metadata ...

No consensus has been reached on the phylogenetic relationships among the four earliest lineages: Protura, Collembola, Diplura, and Insecta, the latter including all hexapods except the first ...

The early lineages of hexapods (broadly defined insects) have long been debated. Researchers at University of Tsukuba and collaborators critically examined the newly proposed "Protura-sister" ...