Baculina
Encyclopedia
Baculina is an extinct ammonoid cephalopod genus belonging to the ancylocerid
family Bochianitidae. Baculina is known from the Valanginian
of the Lower Cretaceous.
Ancyloceratina
The Ancyloceratina were a diverse suborder of ammonite most closely related to the ammonites of order Lytoceratina. They evolved during the Late Jurassic but were not very common until the Cretaceous period, when they rapidly diversified and become one of the most distinctive components of...
family Bochianitidae. Baculina is known from the Valanginian
Valanginian
In the geologic timescale, the Valanginian is an age or stage of the Early or Lower Cretaceous. It spans between 140.2 ± 3.0 Ma and 136.4 ± 2.0 Ma...
of the Lower Cretaceous.