[A]
Tornotes < 152 μm.
Acanthostyles forming a basal reticulation from which arise plumose tracts. |
| | Plocamionida lyoni
(Bakus, 1966) |
Sponge:
Thin encrusting to 2 cm thick..
Surface: can be smooth but most often covered with rounded nodules and deep grooves.
Oscula: to 200 μm.
Color: Alive: Olive-tan, yellow, gold, buff, light brown, scarlet, orange.
Spicules: Megascleres:
(1) Acanthostyles:
63 - 96-117) - 159 um.
x 7.0 - 7.5 um.
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(2) Acanthostyles:
116 -161- 208- 301 um.
x 8.5 - 9.5 um.
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(3) Tornotes:
92 -117-133- 152 um.
x 3.4 - 4.5 um.
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Microscleres:
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(1) Arcuate Isochelae:
12 -20-27- 31 um.
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Skeleton:
Ectosome: Tornotes grouped at surface.
Choanosome: Basal reticulation of small Acanthostyles. Large Acanthostyles forming plumose tracts that protrude from surface.
Distribution: Central to Northern California.
Depth: Intertidal to deep water, 51 m.
Note: Some spicule categories appear to reach larger sizes in the Pacific Northwest. Was Hymendectyon lyoni.
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Tornotes > 157 μm.
Acanthostyles forming tracts to the surface.
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