|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Trilobita - Phacopida - Encrinuridae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|H. Pärnaste 2006||Exoskeleton with comparatively flat middle lobe, and low palpebral fixigena; anterior portion of cephalon and genal area abaxial from the eyes curve steeply downwards. Glabella with equal L1 and L2, and symmetrically developed glabellar tubercles: 1L)2L)3L)4L1 -1, 4L2 -2 and the second anterior border tubercle lie in one curved line. Anterior cranidial border deeply inclined medially, bearing six symmetrically distributed tubercles. Librigenal border straight, with no inflation, bearing a few very low tubercles at the axial furrow; the very shallow anterior border furrow hardly distinguishes it from the prematurely short LP with low inflation and a few tubercles, developed on the broadest area, i.e. laterally. Rostral suture concave. Prominent fixigenal circumocular tubercles in regular ring around eye. Pygidium with five pairs of pleurae extending to the posterior border and united sixth pair appears as a convex ‘loop’ behind the axial lobe. The axis shows 12 rings with paired small tubercles anteriorly and a low, lens-shaped ridge breaking the rearmost rings sagittally.|