Terebratulina japonica (Sowerby, 1846)

Bitner, Maria Aleksandra & Romanin, Marco, 2017, Recent brachiopods from the South China Sea, NW Pacific, Zootaxa 4306 (2), pp. 287-290 : 287

Terebratulina japonica (Sowerby, 1846) ( Fig. 1A, B )

2006 Terebratulina japonica (Sowerby) —Bitner, p. 22–23, figs.3, 4A–G (cum syn.).

2008 Terebratulina japonica (Sowerby) —Bitner, p. 433–434, fig. 7A–D.

2010 Terebratulina japonica (Sowerby) —Zezina, p. 1185.

Material examined. DongSha 2014 cruise, stn DW 4125, 21°02’N, 116°28’E, depth 305–306 m, four specimens. Remarks. In outline and ornamentation the specimens resemble Terebratulina japonica , a species known from off

Japan ( Hatai 1940, Logan 2007) and Fiji ( Bitner 2006, 2008). Terebratulina japonica is characterized by a rounded to

oval shell ornamented by numerous fine but distinct ribs. Two other Terebratulina species known from this region, T.

photina and T. hataiana , are larger than T. japonica , the first having a nearly smooth surface, the second fine, flat

costellae ( Dall 1920, Cooper 1973c).

Figures

FIGURE 1. A – B. Terebratulina japonica (Sowerby, 1846), dorsal views of complete specimens, stn DW 4125, 305 – 306 m, SEM, MNHN IB- 2013 - 640. C – G. Macandrevia sp., one complete specimen, stn CP 4123, 1612 – 1665 m, MNHN IB- 2013 - 641. C – D. Dorsal and lateral views of complete specimen. E – F. Ventral valve of the same specimen, posterior part of interior and tilted view to show strong dental plates, SEM. G. Interior view of dorsal valve to show cardinalia, SEM. H – R. Nipponithyris afra Cooper, 1973, stn CP 4130, 795 – 822 m. H – M. Dorsal, lateral and anterior views of two complete specimens, MNHN BI- 2013 - 642. N – O. Posterior part of ventral valve interior and tilted view to show swollen bases and grooves to accommodate inner socket ridges, SEM, MNHN BI- 2013 - 643. P. Interior of dorsal valve, partly broken loop visible, SEM, MNHN BI- 2013 - 644. Q – R. Posterior part of dorsal valve interior and enlargement to show details of strongly thickened cardinalia, SEM MNHN BI- 2013 - 645.