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 42509 10.11646/zootaxa.3861.5.1 0b368704-d9cc-4a82-8248-bc4c06dcf781 1175-5326 252462 E62DB6C3-0C5F-4898-99C4-1BEC70DD1734 Ascheria ? sp. ( Fig. 7A–D ) Description. Large high-spired shell with remnants of opisthocline axial ribs and/or growth lines. Spiral lirae bestdeveloped on whorl/base demarcation and base. Subsutural constriction developing on the adult portion of the shell. Juvenile whorls unknown unless specimens of Kugler et al. (1994) and Gill et al. (2005) belong to the same species. Protoconch unknown. Aperture drop-shaped. Material and occurrence. Four specimens from Joes River Formation (probably Eocene-Miocene), Barbados collected by Peter Jung. Three specimens (NMB-H 20154, 20155, 20158) from Loc. 10039 (Joes River, western branch of Spa River, between Spa and Richmond Ridge under oceanic cliff. Joes River mudflow. Marlstone lenses with fossils in pebbly clays. 349 E to Spa windmill) and one specimen (NMB-H 20162) from Loc. 10070 (Joes River mudflows in branches of River S of Bissex Hill). Remarks. Additional specimens which may belong to this species are illustrated by Kugler et al. (1984) and Gill et al. (2005) as “ Diastoma sp.” and "Cerithid indet." ( Kugler et al. 1984 ), and as “ Abyssochryssos sp.” and “zygopleurid sp. B” ( Gill et al. 2005 ). The specimens we examined are only fragmentary and a study of the entire material available from Barbados would be necessary for a more accurate taxonomic assessment. The gross morphology of all specimens (especially NMB-H 20154, 20155, 20158) is reminiscent of Abyssomelania but the most characteristic feature of Abyssomelania , the abyssomelanid riblets is absent in the specimens from Barbados . Nevertheless it is possible that the specimen from locality 10070 (NMB-H 20162) belongs to Ascheria ( Fig. 7D ) due to the presence of a subsutural constriction, while the specimens NMB-H 20154, 20155, and 20158 from locality 10039 belong to Abyssomelania .