Geological Time: Quaternary Holocene recent
the image is published in the source mentioned below
holotype
View of a specimen of Stannophyllum zonarium Haeckel, 1889
The identification is based upon:
, : Haeckel, E. (1889). Report on the deep-sea Keratosa collected by H.M.S. Challenger during the years 1873-76. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology. 32 (part 82): 1-92, pls 1-8. Plate , Fig.