Mollusks from late Mesozoic seep deposits, chiefly in California Author Kaim, Andrzej Author Jenkins, Robert G. Author Tanabe, Kazushige Author Kiel, Steffen text Zootaxa 2014 3861 5 401 440 journal article http://dx.doi.org/10.11646/zootaxa.3861.5.1 0b368704-d9cc-4a82-8248-bc4c06dcf781 1175-5326 252462 E62DB6C3-0C5F-4898-99C4-1BEC70DD1734 Nucinella sp. ( Fig. 11 ) Description. The largest complete specimen ( CAS 73135 ) is 7.6 mm in height and 6.8 mm in length (we follow La Perna, 2005 for the measurement orientation for nucinellids), of truncate nucinellid shape, and has a row of thick taxodont teeth below the pointed umbo. Material and occurrence. Five specimens from Eagle Creek (Late Barremian, Early Cretaceous). Remarks. Chemosymbiosis has recently been documented for Nucinella ( Oliver & Taylor 2012 ) . Nucinellids are rare at fossil seep deposit but have a long geologic history in these habitats, with occurrences in the Late Triassic of Oregon ( Peckmann et al. 2011 ), the Early Cretaceous of Svalbard ( Hammer et al. 2011 ), and the Late Cretaceous and early Oligocene of Japan ( Amano et al. 2007 , 2013 ; Kiel et al. 2008 a ).