Using common names: Clockwise from top left; a segmented worm (Nereis virens), a priapulid worm (Priapulus caudatus), and a lamp shell (Liothyrella uva).
High Resolution JPEG 300 DPI

Caption: Morphology-based tree of animal relationships
(To request an Adobe Illustrator 8.0 version of the above graphic, contact Nick Weaver at jnweaver@facstaff.wisc.edu or 608-263-9141.)

Caption: Molecular-based tree of animal relationships
(To request an Adobe Illustrator 8.0 version of the above graphic, contact Nick Weaver at jnweaver@facstaff.wisc.edu or 608-263-9141.)