ammonites
Janiceps bipartita Stache 1878 (lamp shell)

Rhynchonellata - Athyridida - Athyrididae

Alternative combination: Spirigera bipartita

Belongs to Janiceps according to R. Posenato 2001

Sister taxa: Janiceps cadorica, Janiceps emarginatiformis, Janiceps lozovskyi, Janiceps ogbinensis, Janiceps papilio, Janiceps peracuta

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): shell 9.50 x 10.00, valve 33.4 x 40.5