Subfamily

Isograptinae Harris, 1933

Images
TUG 6-388-1
Isograptus | Isograptus gibberulus (Nicholson, 1875)
Norra Lower Ordovician | Arenig
TUG 6-393
Isograptus gibberulus | Isograptus gibberulus (Nicholson, 1875)
Norra Tremadocian | 3b
TUG 6-394a
Isograptus gibberulus | Isograptus gibberulus (Nicholson, 1875)
Norra Tremadocian | 3b
TUG 6-404b
Isograptus gibberulus | Isograptus gibberulus (Nicholson, 1875)
Norra Lower Ordovician | Arenig
TUG 6-412
Isograptus gibberulus | Isograptus gibberulus (Nicholson, 1875)
Norra Tremadocian | 3b