zaphrentoid

plural zaphrentoids

1. biologyA member of the taxonomic family Zaphrentidae, a prehistoric hexacoral.

   Simpson in 1900 proposed Hapsiphyllum for zaphrentoids, with a horseshoe-shaped inner wall, making Zaphrentis calcareformis Hall the genotype.

   1914, George Gilmore Scott, A Physiological Study of the Changes in Mustelus Canis Produced by Modifications in the Molecular Concentration of the External Medium, page 189

   1 more example

   According to Ivanovsky (1960), a structure typical of zaphrentoids is as follows: 1) corals are solitary; 2) septa have a bilateral symmetry in relation to cardinal septum situated in a fossula; […]

   1969, Acta palaeontologica Polonica, volume 14, page 131