0falsefalse This image is a derivative work of the following images: File:Haeckel_Ammonitida.jpg licensed with Cc-pd-mark-footer, PD-old 2006-01-28T01:44:22Z Ragesoss
Commons Public Domain Mark 1.0falsefalse English French Ernst Heinrich Haeckel's 1904 drawing of various ammonites determination method or standard: SHA-1