The ringed caecilian "Siphonops annulatus", an oviparous caecilian, exhibits characteristics similar to viviparous caecilians. The Ceylon caecilian feeds on earthworms and other small invertebrates. Other known lungless tetrapods are the Bornean flat-headed frog and "Atretochoana eiselti", a caecilian. The adult Mexican burrowing caecilian grows to a length of . The Ceylon caecilian grows to about long and resembles a large earthworm. The Ceylon caecilian is endemic to southwestern and central Sri Lanka. "Boulengerula taitana" is an egg-laying burrowing caecilian. It might have the broadest known distribution among terrestrial caecilian species. The region is also home to many caecilian species. The oldest known caecilian is another Early Jurassic species, "Eocaecilia micropodia", also from Arizona. The skin on a caecilian mother is used for a form of parent-offspring nutrient transfer. The ringed caecilian ("Siphonops annulatus") has developed a unique adaptation for the purposes of reproduction. This action by Caecilian created many enemies in Carthage who were staunchly opposed to him. Since then, a tenth caecilian family has been discovered, Chikilidae. In 311, Caecilian was elected bishop of Carthage.