zaphrentinæ

Century Dictionary and Cyclopedia

1. n. A subfamily of Paleozoic rugose stone-corals, of the family Cyathophyllidæ, typified by the genus Zaphrentis. They have a free and simple corallum, and a well-developed septal fossula formed by a tubular inflection of the tabulæ on one side, or replaced by a cristi-form process. The tabulæ are complete, but the septa are deficient or irregular, and there is usually no columella.