- Look up umbo in Wiktionary, the free dictionary. Umbo may
refer to: Umbo (eye), tiny
depression in the
center of the
foveola corresponding to the foveal...
- The umbo (plural
umbones or umbos) is the
vaguely defined,
often most prominent,
highest part of each
valve of the s**** of a
bivalve or
univalve mollusc...
-
oblong valves that grow to
about 5
centimetres (2.0 in) in length. The
umbone/beak is
about one
third of the way
along the s****. The
anterior part of...
- s****"
because species such as Arca have a
large flat area
between the
umbones which, in an
undamaged s****,
somewhat resembles a deck, with the rest...
- of a
street in Pompeii.1
Native earth; 2 Statumen; 3 Audits; 4 Nucleus; 5
Dorsum or
agger viae; 6 Crepido,
margo or semita; 7
Umbones or edge-stones...
- of a limpet. The
umbone of the s**** is off centre, near the
dorsal margin of the s****. A few fine
ridges radiate from the
umbone and
there is a sculpting...
-
either one or two rows of
similar interlocking teeth on
either side of the
umbones, as is the case in the ark
clams (Arcidae), the
bittersweets (Glycymerididae)...
- definition, all
bivalves have two valves, the s**** of a
bivalve has two
umbones, and two beaks. In many
species of
bivalves the
beaks point towards one...
-
interlocking teeth on
either side of the
umbones, as in the arc clams. Dysodont; weak
teeth near the
umbones, as in the
marine mussels. Isodont; lateral...
-
number of
broad ribs
covered with
blunt spines.
These radiate from the
umbone, the
rounded protuberance near the hinge, and
between them are fine etched...
