Colpocoryphe is a genus of trilobites in the family Calymenidae.

Morphology

• Convex Cephalon

• Trapezoidal glabellae, frequently distinctly furrowed and surelevated compared to the axis.

• Dorsal furrows slightly convergent forwardly with almost linear anterior parts.

• Broad dorsal furrows, deep and not well defined.

• 3, rather 4, well defined lateral furrows

• Librigenæ without lateral area or lateral furrow.

• Preglabellar field very short, downward oriented.

• Inflated occipital ring with smooth lateral ends.

• Occipital furrow broad and deep.

• Eye ridges rather weak.

• Anterior cephalic notch marked, with frequently parallel edges.

• Thorax : Strongly convex axis.

• Triangular Pygidium

• Convex axis, with segmentation well defined.

• 6 - 8 axial rings.

• Pleurae with deep border furrows.

• Axis extending nearly to posterior margin (large posterior terminal piece), connected to

• it by short postaxial ridge.

• Pleural fields behind articulating half-ribs nearly smooth, with 2 - 3 very indistinct ribs.

• Wide border distinctly set off by marked change in convexity.

References