Thanks guys, that's what mine looks like as well but on the very bottom outboard sides of the chain cover there are two more holes, in addition to the four that the oil pan bolts to. If you look at the chain cover from the front there is a pan bolt hole on either side of the oil seal and then one more in each corner.
Perhaps to hold hose, wire, or cable clamps?

Sorry for my assumption- thanks guys or Ladies as the case may be.