Description
Macrocnemic Zoantharia possessing an endodermal sphincter muscle. One genus, the non-British Gerardia, secretes a horny axial skeleton.
%LABEL% (%SOURCE%)
Description
Macrocnemic Zoantharia possessing an endodermal sphincter muscle. One genus, the non-British Gerardia, secretes a horny axial skeleton.
%LABEL% (%SOURCE%)