Arranged in or consisting of one series or row.
 Example sentencesExamples
-  Test consists of a spherical proloculus followed by a uniserial arrangement of three-lobed chambers.
 -  Some rhipidocystids have standard biserial brachioles whereas others have uniserial brachioles.
 -  Taxa within the group are variously unilocular or multilocular, spherical, tubular or uniserial, and coiled or uncoiled.
 -  One isolated uniserial arm trunk with biserial ramules was recovered from the Nada.
 -  Within the septate group there are uniserial and coiled forms.