| The outer surface of two parts yield numerous mamillate protrusions, which are larger and sparser on the calyx than those on the stalk. |
| Their perigonium consists of two trimerous whorls of tepals, or conversely of a perianth comprising calyx and corolla. |
| The polyp lived on top of a tabula in a depression in the top of the coral called the calyx. |
| The pattern of proximal axes being more aborally inclined than are distal axes is similar to that in C axes of crinoid calyx plates. |
| In most extant crinoids, primarily the shallow-water ones, there are two body regions, the calyx and the rays. |
| Aestivation of the calyx is cochlear descending, which is a new character within Ingeae. |
