Download PDF by Louis S. Kornicker: Biology of the Antarctic Seas XIII
By Louis S. Kornicker
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Published by way of the yank Geophysical Union as a part of the Antarctic learn Series.
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Extra resources for Biology of the Antarctic Seas XIII
51 Arms No. 24 130 No. 8 first syzygy Axillary angle* Brachial angle* syzygy second syzygy Position third syzygy no. 09 87 114 119 no. -- -- -- muscular articulations Max. 46 first Position Min. 2 muscular articulations Pinnules No. 15 97 P1-P5 - - - 93 5 degrees. syzygy. One of these with third syzygy at 14+15, the other at 15+16. Axillary triangular. P1 long and flagellate, with over 40 segments, and with a highly developed comb. P2 lacks a comb. First three pinnulars of P2 broader than long, four and five about as long as broad.
993, N. this virilis 1 specimen. This specimen is a typical Notocrinus. The centrodorsal that it cannot be identified at of m. Notocrinus Both shores and N. is missing to species. mortenseni so occurred station. Family ANTEDONIDAE Florometra A. H. Clark Members of the genus Florometra are distributed throughout the Southern Ocean, around New Zealand, of South and north and North along America the west coast to the southern Bering Sea, across the western Pacific, and south again as far as the Korean Straits.
It is possible that the control mechanism for regeneration specifies that a syzygy be laid down every so many articulations after a break. Positions of syzygies would then depend upon the position of the original break. Because only those arms that have not completely regenerated can be recognized as regenerating, large numbers of specimens are needed to determine if a statistical SPEEL AND DEARBORN: COMATULID CRINOIDS 29 ship exists between displaced syzygies and regeneration. The shapes of individual ossicles in the division series and lower arms (IBrl-Br 2) are especially useful in distinguishing species of Florometra• for example, certain F.
Biology of the Antarctic Seas XIII by Louis S. Kornicker