There are three species,
C. catticus,
C. totuserratus, and
C. lipsiensis.
C. catticus is much more common and present from the early Oligocene until the middle Miocene.
C. totuserratus is a rarer serrated species which exists in the early Miocene.
C. tenuidens is a junior synonym of
C. totuserratus once applied to teeth from the late oligocene of Australia. Possible transitional teeth from
C. catticus to
C. totuserratus are known from the late Oligocene
Chandler Bridge Formation of
South Carolina.
C. lipsiensis was described in 2018 from the
Rupelian-aged
Böhlen Formation of
Germany. It is unserrated. There is debate over the placement of the position of this genus within the order
Lamniformes. It has been traditionally considered a gracile member of the family
Lamnidae, but some recent authors have suggested it is a robust member of the family
Odontaspididae. Either way, the species is an example of
convergent evolution. The lack of associated material makes confident placement difficult. Purdy (2001) synonymized this genus with
Triaenodon but subsequent authors have refuted this. ==References==