-
radula is heterodont, also
known as heteroglossan, in
which the
middle or
rhachidian tooth in each
array has
multiple cusps and the
lateral teeth are unicuspid...
- and the
shape of the
teeth agrees with that of the
known species. The
rhachidian tooth has a
subquadrate body,
narrower in front, with a
concave upper...
- The jaws are
developed or absent. The
radula is rhipidoglossate. The
rhachidian teeth are
always present and well-developed. The
lateral teeth generally...
- (Geb. der Schnecken, ii, pi. 20, fig. 7),
except that the
bases of the
rhachidian and
lateral teeth are subcircular, and on a few of the scythe-shaped cusps...
-
radula have the
formula 120 . 2 . 8 . 1 . 8 . 2 . 120 (130 . 1 . 130). The
rhachidian tooth is tricuspid. The
eight inner laterals are
bicuspid and broad, forming...
- the
median rows, and
cross even the
uncini of the
opposite side. The
rhachidian or
median tooth has a
subquadrate basal part, with rounded,
convex posterior...
- It is
closely applied to the s****. The long
radula has a long,
narrow rhachidian tooth. It is
lanceolate with its tip
narrowand recurved.
There are 26...
-
perhaps by erosion. The
inside of the s**** has a
smooth surface. The
rhachidian tooth of the
radula is
elongate with
convex sides. It has no reflected...
-
central part are very thin and transparent,
without distinct cusps; the
rhachidian tooth (R) is
broadly winged, bow-shaped, at its
upper part it is thickened...
- 26 rows of
teeth and 7
median rows, with a
large number of uncini. The
rhachidian tooth has a
subquadrate body with
winged sides and a long
triangular cusp...
