[A]
Megascleres Strongyles and Styles-Subtylostyles.
Microscleres are Spherasters and Tylasters. |
| | Tethya californiana
(de Laubenfels, 1935) |
Sponge:
Globular or subglobular to 6 cm in diameter.
Consistency: spongy.
Surface: warty with flattened mushroom-shaped elevations about 2 -4 mm wide, and 1-2 mm high, crowded over the surface. Surface regosity varies with degree of sponge contraction.
Oscula: not evident. .
Color: Alive: Red-orange, orange, yellow-green, yellow-ochre or gold.
Spicules: Megascleres:
(1) Fusiform Strongyles (Anisostrongyles):
1250 - 2300 um.
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(2) Fusiform Styles - Subtylostyles:
500 - 1800 um.
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Microscleres:
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(1) Oxyspherasters-rays often bent or mucronate:
30 - 90 um.
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(2) Strongylospherasters:
Diameter 8 - 25 um.
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(3) Tylasters:
27 um.
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Skeleton:
Ectosome: 2 layered cortex about 1 - 2 mm thick.
Choanosome: fleshy with radiate fascicular tracts 250 - 800 μm thick.
Distribution: Southern to Northern California.
Depth: Intertidal to deep water.
Note: Was Tethya aurantia californiana.
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[B]
Megascleres Tylostyles and Styles.
Microscleres are Tylasters ONLY.
|
| | Timea authia
de Laubenfels, 1930 |
Sponge:
Amorphous, massive, encrusting.
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