. Bulletin - United States National Museum. Science. EEVISION OF PALEOZOIC STELLEKOIDEA. 191 Ambulacralia small, adambulacralia larger, both very numerous ill each column and in their disposition opposite one another. There are no inframarginals. Oral armature of Cryj^tozonia construction and very much as in living Asterias glacialis. Ocular plates probably not present. Genoholotype and only species.—C. mirus (Trautschold) (cita- tions as above). The holotype and three other fragments are from. Fig. 11.—The of the wsk of mira. Schematic. After Scii5ndorf. 1. cen- trodor
. Bulletin - United States National Museum. Science. EEVISION OF PALEOZOIC STELLEKOIDEA. 191 Ambulacralia small, adambulacralia larger, both very numerous ill each column and in their disposition opposite one another. There are no inframarginals. Oral armature of Cryj^tozonia construction and very much as in living Asterias glacialis. Ocular plates probably not present. Genoholotype and only species.—C. mirus (Trautschold) (cita- tions as above). The holotype and three other fragments are from. Fig. 11.—The of the wsk of mira. Schematic. After Scii5ndorf. 1. cen- trodorsal; 2, basal radl\lia; 3, second radulia; 4, THrao radlvlia; 5, basai, inframarginals; G, PAIRED ; a, possible position of anus; mip, probable position of madreporite. the U])i)er Carboniferous (Moscovian), at Mjatschkowa, near Moscow. The holotype is in the University of Petrograd. Remarks.—There is no other Paleozoic asterid worked out in such detail as is Calliasterella. Not only is the gross skeleton known, but the detailed construction of all of the essential ossicles and spines as well. Quarto pages of text and two plates are devoted to the skeleton. The dorsal skeleton retains j)rimitive construction, and although the ossicles are much modified, their general orientation is that of the older Phanerozonia. , new family. Specialized Cryptozonia with decidedly spicular abactinal skele- ton, recalling that of Asterias. Ambidacra opposite or shghtly 50001°—Bull. 88—IS- IS. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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