The bird has a small, knoblike red comb and short, stiff, red wattles projecting from the cheeks.
The ilial prominence is large and knoblike when viewed from above.
There is a knoblike process on the crest at a point three fourths the length of the baculum from its base.
The ventral surface is thickened and forms a rounded, knoblike articular surface.
The knoblike antotic processes on the basisphenoid are unlike those of any other known coelacanth.
late 14c., knobe, probably from a Scandinavian or German source (cf. Middle Low German knobbe "knob," Middle Dutch cnoppe, Dutch knop, Old Frisian knopp, knapp, Old High German knopf, German Knopf "button," Old Norse knyfill "short horn"). Meaning "knoll, isolated round hill" is first recorded 1640s, especially in U.S.