The surface is faintly cancellated by slight longitudinal lines that cross growth lines which define a deep hyponmic sinus.
32.
Some may be smooth and relatively featureless, except for growth lines, and resemble that of the modern " Nautilus ".
33.
The protoconch may sometimes consist of several whorls, but when this is the case, the whorls show no growth lines.
34.
Growth lines are strongly bent backward on this belt, indicating the presence of a deep sinus on the apertural margin.
35.
"Acrimeroceras " has a shell like that of " Paratornoceras " with biconvex growth lines and constrictions and simple dorsal lobe.
36.
Thomas, the Diageo spokeswoman, said Captain Morgan has better potential than Malibu for use in Diageo's high-growth line of ready-to-drink premixed cocktails.
37.
The shell of " Neoaganides " has a well-developed hyponomic sinus and shallow lateral reentrents at the aperture outlined by growth lines.
38.
The shell of " Uranoceras " is typically smooth but may have growth lines that form a hyponomic sinus on the venter.
39.
Sculpture consists of nodelike riblets and umbilical plications which disappear at maturity . Growth lines form shallow ventral sinus and ventrolateral salients.
40.
It is smooth and cylindrical, bulged and flat medially, with growth lines starting at middle and extending toward two entrances situated laterally.
