Genus

Helmersenia Pander, 1860

Images
TUG 1619-220
Helmersenia ladogensis | Helmersenia ladogensis (Jeremejew, 1856)
Pakerort Stage
TUG 1619-233a
Helmersenia ladogensis | Helmersenia ladogensis (Jeremejew, 1856)
Pakerort Stage
TUG 1619-233b
Helmersenia ladogensis | Helmersenia ladogensis (Jeremejew, 1856)
Pakerort Stage
TUG 1619-233c
Helmersenia ladogensis | Helmersenia ladogensis (Jeremejew, 1856)
Pakerort Stage
TUG 1619-234
Helmersenia ladogensis | Helmersenia ladogensis (Jeremejew, 1856)
Pakerort Stage
TUG 1619-235a
Helmersenia ladogensis | Helmersenia ladogensis (Jeremejew, 1856)
Pakerort Stage
TUG 1619-235b
Helmersenia ladogensis | Helmersenia ladogensis (Jeremejew, 1856)
Pakerort Stage
TUG 1619-236
Helmersenia ladogensis | Helmersenia ladogensis (Jeremejew, 1856)
Pakerort Stage
TUG 1619-237
Helmersenia ladogensis | Helmersenia ladogensis (Jeremejew, 1856)
Pakerort Stage
TUG 1619-238
Helmersenia ladogensis | Helmersenia ladogensis (Jeremejew, 1856)
Pakerort Stage