Sponge lamellate.
Oscula scattered on only one side. |
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[B]
Sponge lamellate.
Oscula scattered on both sides.
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| | Sphinctrella sp. A
(Green & Bakus, 1994) |
Sponge:
Lamellar. Lateral margin with spicule fringe.
Consistency: hard.
Surface: rough but superficially smooth.
Oscula: depressions with protective spicules.
Color: Preserved: White.
Spicules: Megascleres:
(1)Oxeas (thin) :
3250 -4010- 5000 um.
x 8 -11- 18 um.
(2)Oxeas (thick):
1075 -1645- 2125 um.
x 16 -41- 75 um.
(3)Oxeas (short):
390 -633- 840 um.
x 13 -24- 29 um.
(4) Styles:
1400 -1600- 1750 um.
x 39 -56- 73 um.
(5)Calthrops:
100-273-510 um.
x 10-33-65 um.
(6)Triacts:
300-350-400 um.
x 44-55-65 um.
(7)Triaenes:
120-297-700 um.
x 21-32-52 um.
Microscleres:
(1)Microxeas:
135 -171- 190 um.
(2)Metasters and Spirasters:
8 -16- 21 um.
Skeleton:
Ectosome: Tangential Oxeas and layer of Calthrops.
Choanosome: Irregular bundles of Oxeas.
Distribution: Southern California.
Depth: Deep water.
Note: Needs review. May be Poecillastra. or Vulcanella (Vulcanella).
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