The developing embryos are sustained by a yolk sac until they are 12 cm (4.7 in) long, after which they are oophagous and feed on egg capsules produced by the mother. Each capsule measures about 55 mm (2.2 in) long and 12 mm (0.5 in) across, and contains 20–30 ova. Early-stage embryos have specialized teeth for opening the capsules, while later-stage embryos have their teeth hidden and swallow the capsules whole, their teeth not becoming functional again until just after birth.
The developing embryos are nourished by a yolk sac until they reach a certain length and then transition to an ovoviviparous state where they consume egg capsules produced by the mother. Each capsule contains 20–30 ova, and early-stage embryos have specialized teeth for opening the capsules while later-stage embryos swallow them whole with their teeth hidden until after birth.