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
Dyscolia johannisdavisi
(Alcock, 1894)
(
Fig. 6
E, F)
This rare species was represented only by a single dorsal valve from Éponge seamount (
Tables 1
, 2) at
707– 777 m
(
Fig. 14
) (
Norfolk
2 cruise). This constitutes the first record from the
Norfolk
Ridge.
Dyscolia johannisdavisi
is one of the largest extant brachiopods ― the present valve is 52.7 mm long. In addition to its characteristic large size, the lateral and anterior valve margins are strongly incurved (
Fig. 6
F) and the loop is very short.
Dyscolia johannisdavisi
was considered to be restricted to the Indian Ocean (
Helmcke 1940
;
Muir-Wood 1959
;
Cooper 1983
;
Hiller 1986
,
1994
;
Zezina 1994
) until
Laurin (1997)
recognized it in the area of
New Caledonia
and the Chesterfield Islands.