. Bulletins of American paleontology. 42 Bulletin 185 dozen plates on each side of a median suture. A fracture passes through the median stele, but it can be seen that it narrows to a distal stele like that in other rutroclypeids. The theca is imperfect but compatible with the idea of an amphora-like outline. A brachiole like that in R. victoriae is present. Its position is enough to prove that the theca could not be a circular one as in R. junori and R. victoriae. Another specimen (P 16901-2) consists of a poorly preserved theca, but there is enough margin to prove that the theca was not circ
. Bulletins of American paleontology. 42 Bulletin 185 dozen plates on each side of a median suture. A fracture passes through the median stele, but it can be seen that it narrows to a distal stele like that in other rutroclypeids. The theca is imperfect but compatible with the idea of an amphora-like outline. A brachiole like that in R. victoriae is present. Its position is enough to prove that the theca could not be a circular one as in R. junori and R. victoriae. Another specimen (P 16901-2) consists of a poorly preserved theca, but there is enough margin to prove that the theca was not circular. "Rutroolypeus" globulus (Dehm) Pi. 6, fig. 2, 4; text-fig. 9 1934. Dendrocystites {Dendrocystoides?) globulus Dehm, Bayer. Akad. Wiss., Sitz., Abt., 1934, pp. 20-21, pi. 1, fig. 1. This enigmatic carpoid from the Rhenish Lower Devonian is known only from the imperfect holotype specimen. Like Rutroclypei/s, of approxi- mately the same age, it is circular in thecal outline, and was apparently like- wise flattish in life. It is covered by numerous polygonal thecal plates and possesses an invagination of the proximal thecal edge to accommodate the proximal stele. The size and proportions are similar to the Australian R//troclype//s. ^^ Text-fig. 9—"Rutroclypeus" globulus (Dehm), (De>/drocys/l/es {Dendrocystoides?) globulus Dehm, 1934) from the Rhenish Lower Devonian. Traced from a photo- graph of the holotype in the Senckenberg Museum. Dr. Richard Dehm of Munich University and Dr. Wolfgang Struve of the Senckenberg Museum, Frankfurt , assisted us by locating the holotype (Forschung-Institut Senckenberg, Katalog No. XXI 29a), pro- vided the photographs here reproduced and advised us that they were unable to detect any evidence of spines on the thecal plates of the specimen when we failed to find them in the photographs or original illustration. This absence of the characteristic spines of R//troclypei/s, all other traits shared wi
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