Recent Brachiopoda from the Norfolk Ridge, New Caledonia, with description of four new species
Author
Bitner, Maria Aleksandra
text
Zootaxa
2009
2235
1
39
journal article
10.5281/zenodo.190398
5781f612-65d4-4817-8aa7-5091a042a326
1175-5326
190398
Xenobrochus australis
Cooper, 1981
(
Fig. 6A–D
)
This micromorphic short-looped species, the second representative of the family
Dyscoliidae
, is noted for the first time from the
Norfolk
Ridge. It was collected on three seamounts (
Tables 1
, 2) during the
Norfolk
1 and 2 cruises and has a depth range of
200 to 967 m
(
Fig. 14
). Like
D. johannisdavisi
,
X. australis
was originally described from the Indian Ocean (
Cooper 1981
).
Laurin (1997)
recorded two other species of
Xenobrochus
from the New Caledonian region ―
X. africanus
(
Cooper, 1973b
)
and
X. indianensis
(
Cooper, 1973b
)
. The material from the
Norfolk
Ridge differs from
X. africanus
in the outline of the loop and the presence of a narrow median fold on the transverse band (
Fig. 6C, D
), which is absent in
X. africanus
(
Cooper 1973b
,
1983
;
Hiller 1986
). In turn,
X. indianensis
can be distinguished from the studied specimens by the more incurved beak with a partly concealed symphytium and distinct cardinal process (
Cooper 1973b
,
1983
).