Recent developments on the morphology of the brachyuran foregut ossicles and gastric teeth
Author
Brösing, Andreas
text
Zootaxa
2010
2510
1
44
journal article
10.5281/zenodo.294144
ce99f918-054b-4464-a0eb-b176579eb998
1175-5326
294144
Pinnotheridae
de Haan, 1833
Nepinnotheres villosulus
(Guerin-Meneville, 1830)
(
Fig. 22
)
Ossicles I and II are inclined about 45° in the antero ventral direction. The unpaired propyloric ossicle (VI) is inclined 45° in the posterior direction; its dorsal margin is straight and dorsally rounded. The pectinal ossicle (VIII) is ring-shaped with eight accessory teeth. An anterior directed spine extends from the middle of the subdentate ossicle (XIV). The postpectinal ossicle (X) is at the posterior end circular rolled about 320°. Ossicles “XVII–XXIII” and “XXI–XXIb” are observed as mixed ossicles. It has a remarkable median narrowed strip. Ossicle XVIII has a comparatively greatly increased surface. Ossicle XXVIa is not recognisable.