- In anatomy, an apex (adjectival form: apical) is part of the s**** of a mollusk. The apex is the
pointed tip (the
oldest part) of the s**** of a gastropod...
- thick,
often broad,
convex ventral callus deposit on the
inner lip and
adapical to the
aperture which may be
important for
gravitational stability. Some...
-
annulosiphonate deposits in the more
adapical (juvenile)portion of the
siphuncle and
cameral deposits in the
adapical (early) chambers.
Geisonoceras has...
-
outer lip is
provided with 6-7
elongate denticles of
which the
third (from
adapical side) is
markedly larger. The
parietal edge has a broad, thin and shiny...
- denticles.
Columellar lip callous, well separated, with two
plicae on
adapical part, one on
abapical part,
otherwise smooth.
Sculpture consisting of eight...
- lobe. The
siphuncle is
moderate in size and
located subdorsally in the
adapical dorsal flexture of the septum.
Based on the
feeding and
hunting behaviors...
-
contracted toward the aperture. The
siphuncle is ventral.
Bullettes at the
adapical ends of the
connecting rings are small.
Teichertoceras is
thought to have...
-
Cyrtogomphoceratidae that
lacks the
septal foramina grasping bullettes at the
adapical end of the
connecting rings. s**** are
endogastric and
strongly compressed...
-
generally straight,
beginning with a
subcircular cross section in the
adapical portion but
becoming faintly depressed adorally (toward the front). Sutures...
-
externally varicose. The edge of the
outer lip
shows a deep
notch in the
adapical part, then with a
cutting edge and with a
straight profile in
lateral view...
