{"DOI":"10.1144/jm.7.2.187","abstract":"<p><strong>Abstract.</strong> Three stratigraphically successive species of <i>Bradleya</i> Hornibrook, 1952 from abyssal sediments of the central equatorial Pacific (Leg 85, Deep Sea Drilling Project) form an unbranching evolutionary sequence designated as the <i>B. johnsoni</i> Benson lineage. These taxa are <i>B.</i> sp. 1 (Lower Oligocene), <i>B. johnsoni</i> (Upper Oligocene \u2013 Middle Miocene) and <i>B. thomasi</i> n. sp. (Upper Miocene \u2013 Recent). A shared synapomorphic character, the posterior bridge complex, establishes the kinship of these species. Their stratigraphic ranges and a traceable series of changes in the organisation and mass of the reticulum are consistent with the hypothesis of direct ancestor/descendant relationships between them. <i>Bradleya johnsoni</i> is distinguished from <i>B.</i> sp. 1 by the appearance of new primary muri in the posteroventral region and by a general increase in reticular mass. In <i>B. thomasi,</i> the overall reticular pattern is maintained but it becomes more delicate and less rectilinear. Each species of this lineage shows similar variation in the posteroventral reticulum.</p>\n ","author":[{"family":"Steineck"},{"family":"Yozzo"}],"id":"unknown","issued":{"date-parts":[[1988,12,1]]},"language":"en","page-first":"187","publisher":"Copernicus GmbH","title":"The Late Eocene \u2013 Recent Bradleya johnsoni Benson lineage (Crustacea, Ostracoda) in the Central Equatorial Pacific","type":"article-journal"}