corallian

from The Century Dictionary.

• noun Having the character of coral, or containing coral.
• noun Specifically, in geology, noting a division of the Jurassic system lying above the Oxfordian and below the Kimmeridgian and in England including the coral rag, coralline oölite, and calcareous grit.
• noun In geology, the corallian division.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Geol.) A deposit of coralliferous limestone forming a portion of the middle division of the oölite; -- called also coral-rag.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun geology A deposit of coralliferous limestone forming a portion of the middle division of the oolite.