The chilidium is a convex plate often covering the cardinal process of the dorsal valve in the Protremata.

The ichthyological diversity registered confirms the presence of a permanent freshwater environment in the African northern region with a probable hydrological system of significant size and including streams and possibly lakes or ponds (see also environmental discussion on the subcontemporaneous site at Birket Qarun [6 ]).

[…] he went to visit him, being then octogenary, and very decrepid with the gowt, but had his sight and understanding.

The fountain plays.