Redlichiida

Redlichia (Redlichia) mai

Order Redlichiida / Suborder Redlichiina / Superfamily Redlichioidea / Family Redlichiidae

Cambrian, Series 2, Stage 4Yunnan
Classification
Order Redlichiida / Suborder Redlichiina / Superfamily Redlichioidea / Family Redlichiidae
Genus
Redlichia, subgenus Redlichia Cossmann, 1902
Genus author
Cossmann M.
Genus etymology
Redlich, a surname, honouring the British paleontologist K. A. Redlich
Species
R. (R.) mai Lu, 1941
Species author
Lu Yanhao
Species etymology
Ma — named for Dr Ma H. Y.
Age
Cambrian, Series 2, Stage 4
Distribution
Yunnan
Synonyms
Redlichia mai
Diagnosis
Dorsal shield oval. Cranidium about as long as wide; glabella columnar, slightly constricted at midlength, three pairs of glabellar furrows; occipital furrow distinct; occipital ring slightly wider medially; outer border broad and convex; inner border distinct; prec Limb triangular; Eye ridge short; Palpebral lobe long, crescentic, posterior end close to the glabella; Posterior limb narrow; Anterior branch of facial suture at nearly 60 degrees to the cranidial midline; Free cheek broader than inner fixed cheek, Genal spines long and stout. Thorax subtriangular, 15 segments, gradually narrowing backward; Axis and pleural lobes similar in width, axial rings with small nodes, 11th segment with a stout, long axial spine; ocular wing triangular; eye ridge short; palpebral lobe long, crescentic, its posterior end close to the glabella; posterior limb narrow; anterior facial suture branches at about 60° to the axis; free cheek wider than the intraocular cheek, genal spine long and stout. Thorax subtriangular, 15 segments, narrowing backward; axis and pleural lobes of similar width, axial rings with small nodes, segment 11 with a stout long axial spine; pleural lobes broad and flat, pleural furrows broad and deep, pleural spines rather long. Pygidium extremely small, with one fused segment and a pair of dome-like prominences.