Lytocrioceras
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| Lytocrioceras Temporal range: Barremian | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Suborder: | †Ancyloceratina |
| Family: | †Ancyloceratidae |
| Genus: | †Lytocrioceras Spath, 1924 |
Lytocrioceras is a genus of ancyloceratine ammonites from the Lower Cretaceous with a shell that resembles a safety pin. The shell begins as a loosely wound spiral, followed by a straight shaft which makes a U-turn to go back is somewhat the opposite direction, ending in a jog, offset from the original coil.
Lytocrioceras was originally included in the Ancyloceratidae (Lytoceratina),[1] united with other similar forms but has since been reassigned to the Macroscaphitidae.[2]
