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Micraster corbovis
the precise stratigraphic understanding of the origin of the rests
The most distinctive feature of the majority of the Ancyloceratina is the tendency for most of them to have shells that are not regular spirals like most other ammonites
Teeth heavy with smooth enamel surfaces
Ecology: nektobenthic carnivore
05226 - Beautiful Pyritized 0.94 Inch Unidentified Lower Cretaceous Ammonites Mosasaur bones Micraster corbovisSpecimen of extreme quality. Unidentified species. His suture lines are wonderfully well detailed. It is naturally pyritized. It has undergone a taphonomic process of permineralization in Iron Sulfide (Pyrite). Permineralization is a process of fossilization in which mineral deposits form internal casts of organisms.