Chimaerea
Notochord not segmentaly constricted, but surrounded by calcified rings. Four gill slits, covered with a fold of skin. No ribs.
%LABEL% (%SOURCE%)
Chimaerea
Notochord not segmentaly constricted, but surrounded by calcified rings. Four gill slits, covered with a fold of skin. No ribs.
%LABEL% (%SOURCE%)