Identifying Sponges

Key to California Porifera (Page 124)

( From page 123 A) Styles to 600 μm or > (up to 2600 μm).
[A]
Oxeas: 240 - 470 μm.
cc124A.jpg
Axinella sp. A Green & Bakus, 1994
Sponge: Encrusting. Consistency: firm, crusty, prickly. Surface: hispid, may have digitate processes. Oscula: no pores or oscula visible.
Color: Preserved: White to light tan.
Spicules: Megascleres: (1) Styles -straight to slightly bent near head end: 200 -636- 1500 um. x 13 -19- 26 um.
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(2) Oxeas -straight or bent near middle: 240 -351- 470 um. x 10 -14- 18 um.
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(3) Strongyles (only one seen): 400 um. x 2.0 um.
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Skeleton: Encrusting base with condensed axis of spicules (mainly Oxeas and some small Styles) and spongin; Larger Styles perpendicular to surface, with tips projecting from base.
Distribution: Santa Maria Basin, Santa Barbara Channel, Southern California.
Depth: Deep water, 90 - 130.5 m.
[B]
Oxeas: 154 - 240 μm.

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Spongosorites sp. (Bakus & Green, 1987)
Sponge: No information.
Color: Alive: Red-brown.
Spicules: Megascleres:
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(1)Oxeas: 154 -193- 240 um. x 2 -4- 7 um.
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(2)Styles to Subtylostyles: 680 -1397- 2600 um. x 4 -6- 9 um.
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Skeleton: No information except that there is a fleshy dermis.
Distribution: San Clemente Id., Southern California.
Depth: Intertidal.
Note: This species, originally described as Oxeostilon, is not described thoroughly enough to verify its generic status. Oxeostilon is now considered in synonymy with Spongosorites (D. Erpenbeck. & W.M. Van Soest, 2002). No illustrations available.
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