Several Phyla contain no luminous forms whatever.
"The Nature of Animal Light"
E. Newton Harvey
Exocha Brettanoi d', alloin schisthentes erantai, idmenai allothroun Phyla polysperea.
"The Principal Navigations, Voyages, Traffiques and Discoveries of the English Nation, v. 1, Northern Europe"
Richard Hakluyt
From the Wasatch onward, the development of many Phyla may be traced in almost unbroken continuity, though from time to time the record is somewhat obscured by migrations from the Old World and South America.
"Darwin and Modern Science"
A.C. Seward and Others