A circulus is a rarely occurring reptilian social group where there is interaction and personal exchange between individuals.
Circulus is a Latin based term; one definition of the word is "a social gathering or circle company".
The gharial (Gavialis gangeticus) has to nudge young to the water because their teeth are too sharp to carry them.
Sub-adult members of a crocodilian social group will often stand by a female laying eggs or retrieving young from a nest to keep predators away.
As in the case of Corucia, the young tend to stay close to the parents, especially, the mother who guards the neonate.