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NATURAL ORIENTATION OF LUNULITIFORM BRYOZOANS

1967; Geological Society of America; Volume: 78; Issue: 9 Linguagem: Inglês

10.1130/0016-7606(1967)78[1179

1943-2674

R. Greeley,

History of Science and Natural History

Research Article| September 01, 1967 NATURAL ORIENTATION OF LUNULITIFORM BRYOZOANS RONALD GREELEY RONALD GREELEY NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, AMES RESEARCH CENTER, MOFFETT FIELD, CALIFORNIA 94035 Search for other works by this author on: GSW Google Scholar Author and Article Information RONALD GREELEY NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, AMES RESEARCH CENTER, MOFFETT FIELD, CALIFORNIA 94035 Publisher: Geological Society of America Received: 01 Dec 1966 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1967, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1967) 78 (9): 1179–1182. https://doi.org/10.1130/0016-7606(1967)78[1179:NOOLB]2.0.CO;2 Article history Received: 01 Dec 1966 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation RONALD GREELEY; NATURAL ORIENTATION OF LUNULITIFORM BRYOZOANS. GSA Bulletin 1967;; 78 (9): 1179–1182. doi: https://doi.org/10.1130/0016-7606(1967)78[1179:NOOLB]2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Hypotheses on the life position of lunulitiform bryozoans have heretofore been based largely on fossils or on specimens dredged from the sea bottom, rather than on observations of live specimens in their natural habitat. Laboratory observations of living specimens of Discoporella umbellata (Defrance) and Cupuladria biporosa Canu and Bassler and associated fauna revealed that lunulitiform bryozoans survive in both apex-up and apex-down positions. Similar observations by Cook of D. umbellata and C. doma (d'Orbigny) indicated a preference by these species for an apex-up position.During the summer of 1966, specimens of D. umbellata and C. biporosa were observed living in place in waters near Ship Island, east of the Mississippi River Delta. All specimens were in an apex-up position, with the zoarial edge partly buried by sand. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.