Xenobrochus Cooper, 1981

Bitner, Maria Aleksandra & Logan, Alan, 2016, Recent Brachiopoda from the Mozambique-Madagascar area, western Indian Ocean, Zoosystema 38 (1), pp. 5-41 : 14-15

Genus Xenobrochus Cooper, 1981

TYPE SPECIES. — Gryphus africanus Cooper, 1973 , by original designation of Cooper (1981a: 19).

Xenobrochus africanus (Cooper, 1973) ( Fig. 6 A-E; Table 6)

Gryphus africanus Cooper, 1973a: 8 , pl. 4, figs 31-38. Xenobrochus africanus – Cooper 1981a: 20, pl. 4, figs 30-35; 1983: pl. 2, figs 20-23. — Hiller 1986: 111-113, fig. 6. — Laurin 1997: 430, 431, figs 15, 16. — Bitner 2010: 647, fig. 3D-G. — Zezina 2010: 1185.

MATERIAL EXAMINED. — Mozambique Channel. MAINBAZA, stn CP 3143, 1 bivalved specimen.

SouthMadagascar. ATIMOVATAE,stnDW 3564, 1 bivalvedspecimen.

DEPTH RANGE. — 264- 456 m.

MEASUREMENTS. — See Table 6.

REMARKS

The genus Xenobrochus is represented by nine species and is restricted to the Indian Ocean and West Pacific ( Logan 2007; Bitner 2008, 2011). X. africanus was originally described by Cooper (1973a) from Durban Bay, South Africa at 355 m depth under the name of Gryphus africanus but he later ( Cooper 1981a) assigned it as type species to his new genus Xenobrochus . This species was rare in our study but characterized by a completely visible symphytium, and internally by very narrow outer hinge plates and a rounded, concave transverse band ( Fig. 6D, E).