eburnean[capitalized] In the classification of late geological deposits bearing human relics, a subdivision of the Paleolithic section in France. It includes the oldest deposits containing well-finished implements associated with carved bone and ivory. It was the period of the mammoth, went back into glacial time, and was followed by the Tarandean or reindeer epoch.
Webster's Revised Unabridged Dictionary
L. eburneus, fr. ebur, ivory. See Ivory
They seem the enfolding mountains of some fairer land
That lies beyond the world,
With vales of purpling rose in hills eburnean furled
And halcyonian flowers unplucked of any hand