undescribed
Adjective
Meaning
Not described
Not previously known to science
Source: en.wiktionary.orgExamples
He deduced that it contained a hitherto undescribed element which he was unable to characterise.
How true this seems for Hawaiian, with its rich and varied background, its many idioms heretofore undescribed, and its ingenious and sophisticated use of figurative language.”
Freshwaters 16(2): 183-191 but an apparently undescribed species from the same region and genus also exists.
In molecular systematics papers, "cf." may be used to indicate one or more undescribed species assumed related to a described species.
New species are described with some regularity and undescribed species likely remain.
Similar birds were reported from Lord Howe Island; these seem to represent another extinct subspecies but are undescribed to date.