Yunnanocephalus yunnanensis

Order Redlichiida / Suborder Redlichiina / Superfamily Ellipsocephaloidea / Family Yunnanocephalidae

Yunnan; -cephalus, Latin, head

Yunnan;type specimenstype locality

Ptychoparia yunnanensis; Pseudoptychoparia yunnanensis; Yunnancephalus kunyangensis; Yunnancephalus latus Yunnancephalus planifrons; Yunnancephalus subparallelus

Dorsal shield elongate-oval, broadly rounded anteriorly and pointed posteriorly. Cephalon elongate-oval; cranidium subquadrate; glabella truncate-conical, with three pairs of shallow glabellar furrows; inner border broad and concave, outer border convex; eye ridges stout and long, arising from the sides of the frontal lobe; palpebral lobes convex, small to medium; fixed cheek relatively broad, with an extremely short spine at its posterolateral corner; anterior and posterior facial suture branches both directed forward or Extending backward; Free cheek small and narrow, without genal spine. Thorax of 14 segments; Each ring with axial node or spine, axial spines especially distinct on posterior several rings; 4Th or 5th pleural segment longest; Pleural furrow shallow and broad, pleural spines short and stout. Pygidium small, consisting of two axial rings, the anterior ring narrow, the posterior one extending sideways as a broad and stout structure. During the meraspid period the sutures are proparian, becoming gonatoparian in adults.

This species is the type species of Yunnanocephalus.