Fissidentalium sp. (NHM_261)

Wiklund, Helena, Taylor, John D., Dahlgren, Thomas G., Todt, Christiane, Ikebe, Chiho, Rabone, Muriel & Glover, Adrian G., 2017, Abyssal fauna of the UK- 1 polymetallic nodule exploration area, Clarion-Clipperton Zone, central Pacific Ocean: Mollusca, ZooKeys 707, pp. 1-46 : 23-24

Fissidentalium sp. (NHM_261)

Material examined.

NHM_261 NHMUK 20170074, collected 2013-10-17, 13.75583 -116.48667, 4076 m. http://data.nhm.ac.uk/object/679fa0ca-d647-446d-87c5-e8d33949efe2

Description.

A damaged shell with rib features and curvature similar to Fissidentalium species (see Scarabino, 1995). Voucher NHM_261, poor preservation, length 21 mm, maximum width 3.1 mm (Fig. 23A).

Genetic data.

GenBank NHM_261 16S-MF157461, 18S-MF157489, COI-MF157511.

Remarks.

Forms a unique monophyletic clade distinct from other AB01 specimens. In the molecular analysis it groups with other Fissidentalium species, but with very low support. No genetic matches on GenBank. Phylogenetic tree supports placement in order Dentaliida , family Dentaliidae (Fig. 24). Genetic data and imagery provided to facilitate future study.

Ecology.

Specimen collected from an epibenthic sledge tow across region of sediment and polymetallic nodules.