Eucalathis rugosa Cooper, 1973

Bitner, Maria Aleksandra, 2009, Recent Brachiopoda from the Norfolk Ridge, New Caledonia, with description of four new species, Zootaxa 2235, pp. 1-39 : 13

Eucalathis rugosa Cooper, 1973 a

( Fig. 7A )

This is the only representative of the family Chlidonophoridae in the studied material. This micromorphic species was found in only two samples, on Crypthelia and Introuvable seamounts ( Tables 1, 2). Its depth range on the Norfolk Ridge is 200 to 616 m ( Fig. 14 ). Eucalathis rugosa is reported for the first time from the Norfolk Ridge, but is already known from the vicinity of New Caledonia (d’Hondt 1987; Laurin 1997). The species was originally described from off the Philippines ( Cooper 1973a) and has a wide distribution in the western Pacific from the southern part of the Emperor Seamounts, through Fiji and Wallis and Futuna islands, to the slope of Tasmania ( Zezina 1981b, c; Bitner 2008). It was also identified in a collection from the western part of the Indian Ocean ( Zezina 1987, 1994).

Figures

FIGURE 14. Depth ranges of particular brachiopod species collected during the Norfolk 1 and Norfolk 2 cruises to the Norfolk Ridge, New Caledonia.

FIGURE 7. A, Eucalathis rugosa Cooper, 1973 a, dorsal view of complete specimen, MNHN BRA- 3146, Norfolk Ridge, Norfolk 1 Stn DW 1697, 569 – 616 m, SEM. B, Terebratulina reevei Dall, 1920, dorsal view of complete specimen, Norfolk Ridge, Norfolk 2 Stn DW 2075, 650 – 1000 m, MNHN BRA- 3147, SEM. C – E, Terebratulina pacifica Yabe & Hatai, 1934, Norfolk Ridge, Norfolk 2 Stn CP 2095, 283 – 310 m; C, D, dorsal and lateral views of complete specimen, MNHN BRA- 3148; E, inner view of dorsal valve, MNHN BRA- 3149. F – H, Frenulina sanguinolenta (Gmelin, 1791), dorsal, lateral and anterior views of complete specimen, Norfolk Ridge, Norfolk 2 Stn DW 2116, 242 m, MNHN BRA- 3150. I – L, Fallax neocaledonensis Laurin, 1997, Norfolk Ridge, I – K, dorsal, lateral and anterior views of complete specimen, Norfolk 2 Stn DW 2108, 403 – 440 m, MNHN BRA- 3151; J, inner view of dorsal valve, Norfolk 2 Stn DW 2151, 353 – 368 m, MNHN BRA- 3152.