It can be recognized for its pentagonal glabella widest between the frontal corners, with an inverted V-shaped occipital ring.
22.
It can easily be distinguished from other trilobites by the two furrows that extend forwards and sidewards from the front of the glabella.
23.
A small twining vine, " Cassytha glabella " has twining stems which are around 0.5 mm in diameter.
24.
The lateral furrows of posterior lobe of glabella can be seen as sets of pits or a narrow straight or slightly curved backward furrow.
25.
The middle region of the cephalon ( the glabella ) is typically elongate, with the sides often spreading forward ( pestle-shaped ).
26.
Early forms tend to have tapering, conical glabella with furrows extending far backwards while later forms with glabella expanding forwards to inflated frontal lobe.
27.
Early forms tend to have tapering, conical glabella with furrows extending far backwards while later forms with glabella expanding forwards to inflated frontal lobe.
28.
The compound eyes are typically reduced to small tubercles, though they have strong ridges stretching to the glabella ( central region of the cephalon ).
29.
In front of the occipital furrow that crosses the entire glabella, two pairs of dead-ending furrows create three side lobes left and right.
30.
""'Volutomitra glabella " "'is a species of sea snail, a marine gastropod mollusk in the family Volutomitridae.
