Shell shape was convex--convex, with direct hinge line
The umbo in bivalve larvae refers to a small prominence that develops along the hinge line
and gives rise to the term umbonate larvae, that is those larvae that having developed an umbo have lost their earlier straight hinge or D-shaped appearance.
Tightening is furthermore, not a general feature of the transect but becomes more pronounced toward the Fredericton Fault, just as the same folds display more strongly curvilinear hinge lines
(Figs 6, 7).
In the best specimen, the pectoral-abdominal sulcus is congruent with a hinge line
, consistent with plastral kinesis.
A&M Hardware has added new sizes to its hinge lines
Shell dorsibiconvex, slightly transverse suboval to almost subrectangular in outline, about 95% as long as wide, with maximum width between hinge line
Liberty Hardware launched its new Euro Concealo hinge line
at the show.
SOSSentinel is a line of electronic monitoring hinges introduced for the SOSS Invisible Hinge Line
, and manufactured by Universal Industrial Products Co.
In an example of the latter, Hampel worked with a customer who was having a problem with dumpster lids breaking along the hinge line
, a critical part element.
Small subcircular shell, hinge line
less than half shell width.
A hinge line
is positioned between the attached portion and the liftable portion.
A by having less distinct comarginal ornamentation, more closely-spaced body costae, and the umbonal area extends further above the hinge line