This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Haeckel Crinoidea. Metacrinus angulatus Haeckel Carpenter Haeckel Thomson Haeckel Huxley Haeckel Jeffreys Haeckel Jeffreys Haeckel Jeffreys Haeckel Carpenter Haeckel Carpenter stem ossicle Kunstformen der Natur plate Crinoidea see mpizkoeln mpg de html here and mpizkoeln mpg de html here creator Ernst