Weeks Formation Plate 1:

Figure 2.3:1-5,Cedaria minor (Walcott);1,dorsal views of articulated exoskeleton Cedaria minor (Walcott);1,dorsal views of articulated exoskeleton Cedaria minor (FMNH PE57111),X3.8;2,dorsal exoskeleton of articulated exuvium,free cheeks are positioned over the left side of the thorax (FMNH PE57112),X3.3;3,ventral exoskeleton showing hypostome (FMNH PE57113),X3.1;4,dorsal views of articulated exoskeleton (FMNH PE57114),X2.7;5,aggregation of articulated individuals,articulated molts, and isolated parts (FMNH PE57115),X1.3;6,Weeksina unispina (Walcott),dorsal view,thorax slightly disarticulated and displaced laterally (FMNH PE57116),X4.4;7-10,Gerospina schachti n.gen n.sp;7,dorsal view,(FMNH PE57117)X3.4;8,same as 7 but negative image to show additional detail;9,detail of cranidium of same,X5.2; 10,anterior-lateral view of same,X4.1;11,dorsal view of partial exoskeleton (NHNH 437968),X3.7.

Acknowledgements:

    Many thanks to Dr. Shanan Peters for his permission to use these unpublished plates (Shanan Peters, unpubl. dissertation, 2003). As these are unpublished plates, and the sole property of Dr. Peters, permission from the author must be gained in order to reproduce these plates. Please note that these plates are not from the final, peer-reviewed version of the manuscript.

Shanan E. Peters
University of Michigan
Museum of Paleontology
1109 Geddes Road
Ann Arbor, MI 48109-1063