{"pk":41718,"title":"A new \nLyropecten\n (Pectinidae, Bivalvia, Mollusca) from the central California Miocene, USA","subtitle":null,"abstract":"A new pectinid, \nLyropecten terrysmithae\n n. sp., has been recognized in middle to late Miocene rock units referred to as the Monterey Formation and Santa Margarita Sandstone in the southern Salinas Valley, central California. Previously, \nL. terrysmithae\n had been identified as a flat form belonging to either \nL. estrellanus \nor \nL. catalinae\n, then more recently to \nArgopecten\n sp. The earlier assignments were based on its moderate size and a radial rib count nearly identical to these taxa. However, its hinge, flat unledged valves, looped lamellar growth lines, and hinge crura set \nL. terrysmithae\n apart from \nArgopecten\n and all species of \nLyropecten\n. Localities where it occurs in the Salinas Valley that can be accurately dated are from the late middle to middle late Miocene “Margaritan” California provincial molluscan stage. While \nL. terrysmithae\n has been collected at other sites, those localities lack diagnostic age-specific species necessary to determine an accurate geological age and maybe older.","language":"en","license":{"name":"Creative Commons Attribution-NonCommercial-ShareAlike 4.0","short_name":"CC BY-NC-SA 4.0","text":"<p><!-- x-tinymce/html --></p>\n<p>Readers are free to:</p>\n<ul>\n<li><strong>Share</strong> — copy and redistribute the material in any medium or format</li>\n<li><strong>Adapt</strong> — remix, transform, and build upon the material<br><br>The licensor cannot revoke these freedoms as long as you follow the license terms.</li>\n</ul>\n<p>Under the following terms:</p>\n<ul>\n<li><strong>Attribution</strong> — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.</li>\n<li><strong>NonCommercial</strong> — You may not use the material for commercial purposes .</li>\n<li><strong>ShareAlike</strong> — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.<br><br>No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.</li>\n</ul>\n<p>Notices:</p>\n<p>You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.</p>\n<p>No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.</p>","url":"https://creativecommons.org/licenses/by-nc-sa/4.0"},"keywords":[{"word":"fossil pectins, “Margaritan\", Monterey Formation, Santa Margarita Sandstone, Salinas Valley"}],"section":"Article","is_remote":true,"remote_url":"https://escholarship.org/uc/item/6kz5b8kw","frozenauthors":[{"first_name":"Charles","middle_name":"L.","last_name":"Powell, II","name_suffix":"","institution":"U.S. Geological Survey, Menlo Park, CA 94025","department":"None"},{"first_name":"Cheryl","middle_name":"D.","last_name":"Millard","name_suffix":"","institution":"","department":"None"},{"first_name":"Christine","middle_name":"","last_name":"Garcia","name_suffix":"","institution":"California Academy of Sciences, 55 Music Concourse Dr., San Francisco, CA 94118","department":"None"}],"date_submitted":"2020-04-21T16:28:21-07:00","date_accepted":"2020-04-21T16:28:21-07:00","date_published":"2020-04-21T00:00:00-07:00","render_galley":null,"galleys":[{"label":"","type":"pdf","path":"https://journalpub.escholarship.org/ucmp_paleobios/article/41718/galley/31206/download/"}]}