Description Organization, dorsal view from squeezed specimens and sectioned material.Author Dean, 1977PNG file - 36.81 kB - 298 x 578 pixelsadded on 2017-04-0785 viewsWoRMS taxaScan of photoCrassicollum musculare Dean, 1977checked Tyler, Seth 2017-04-07 This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License