What is "glyptambon"

Glyptambon is an extinct genus of Silurian trilobite in the order Phacopida. It is a member of the family Dalmanitidae and the subfamily Dalmanitinae, although it has been classified in the related Ordovician subfamily Mucronaspidinae. The type species G. verrucosus was once placed in Dalmania. Because this species was considered distinct from other Dalmania species, the new genus Glyptambon was erected for it in 1981. A second species, G. amsdeni, was named in 1991 from Tennessee and Illinois.