TABLE 2. Simplicithyris kurilensis Zezina, 1976. Morphometric values of specimen RBINS–INV. 146419 an articulated specimen collected August 13, 1972, off the eastern coast of Iturup Island (co-ordinates 44°37'N/146°57'E) in the Okhotsk Sea, Far East Russia, at a depth between 5 and 60 m. All measurements in mm. L= length of shell, LDV= length of dorsal valve, W= width, T= thickness, WH= hinge line, ØF= maximum width of foramen. L/W= ratio length/width, LDV/W= ratio length of dorsal valve/width, T/W=ratio thickness/width, WH/W= ratio hinge line/width, ØF/W= ratio diameter of foramen/width. LPC= length of pedicle collar, LSP= length of septum, LCP= length of crural plates (in orthogonal projection), WLoph= total width of lophophore, Ø1/2Loph= diameter of one branch of lophophore, Lten= maximum length of one tentacle, Lped=length of pedicle, Wped= width of pedicle.
| External characters |
L mm |
LDV mm |
W mm |
T mm |
WH mm |
ØF mm |
L/W |
LDV/W |
T/W |
WH/W |
ØF/W |
| 7.2 |
4.9 |
5.4 |
2.3 |
3.9 |
2.4 |
1.33 |
1.47 |
0.43 |
0.72 |
0.44 |
| Internal characters |
LPC mm |
LSP mm |
LCP mm |
Wloph mm |
Ø 1/2 Loph mm |
Lten mm |
Lped mm |
Wped mm |
|
|
|
| 1.2 |
2.40 |
1.3 |
4.1 |
1.8 |
1.1 |
1.71 |
0.8 |
|
|
|