Bochianites is a straight shelled ammonite

Ammonite

Ammonite, as a zoological or paleontological term, refers to any member of the Ammonoidea an extinct subclass within the Molluscan class Cephalopoda which are more closely related to living coleoids Ammonite, as a zoological or paleontological term, refers to any member of the Ammonoidea an extinct...

 which lived from the Upper Jurassic, Tithonian

Tithonian

In the geologic timescale the Tithonian is the latest age of the Late Jurassic epoch or the uppermost stage of the Upper Jurassic series. It spans the time between 150.8 ± 4 Ma and 145.5 ± 4 Ma...

, to the Lower Cretaceous, Hauterivian

Hauterivian

The Hauterivian is, in the geologic timescale, an age in the Early Cretaceous epoch or a stage in the Lower Cretaceous series. It spans the time between 136.4 ± 2 Ma and 130 ± 1.5 Ma...

. The shell long, narrow, moderately expanding; smooth or with weak to strong oblique annular ribs. Sutural elements short and boxy. The umbilical lobe, which lies between the lateral lobe and dorsal lobe, on either side, is about the same size ad the lobule dividing the first lateral saddle.

Janenschites, Kabylites

Kabylites

Kabylites is a narrow, straight shelled Lower Cretaceous ancyloceratid resembling Bochianites in general form. Kabylites differs from Bochianites in having an umbilical lobe more or less the same size as the first lateral lobe...

, and Baculina

Baculina

Baculina is an extinct ammonoid cephalopod genus belonging to the ancylocerid family Bochianitidae. Baculina is known from the Valanginian of the Lower Cretaceous.-References:...

are all similar to Bochianites, differing mostly in details of the suture. Janenschites has long, narrow, and more denticulate elements. Kabylites has a larger umbilical lobe, more or less the same size as the 1st lateral lobe. Baculina, which is in doubt, may have been based on a Bochianites that was worn.