Identifying Sponges

Key to California Porifera (Page 121)

( From page 120 B) Megascleres WITHOUT Oxeas.
Megascleres include Styles-Subtylostyles and Tylotes-Subtylotes.
cc121A.jpg (de Laubenfels, 1930)
Sponge: Thickly encrusting to massive up to 7.5 x 5.0 x 5.0 cm. Surface: superficially smooth.
Color: Alive: Salmon-pink, dull orange-red, dull orange-brown, burnt sienna or pale terra cotta.
Spicules: Megascleres: (1) Styles - Subtylostyles: 222 -293-320- 398 um. x 6.5 - 7.0 um.
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(2) Tylotes - Subtylotes (sometimes gently sinuous): 195 -247-274- 333 um. x 4.5 - 7.0 um. May have immature Styles that look like rhaphides.
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Skeleton: Ectosome: A thin dermal membrane with tangentially arranged Tylotes. The dermis is underlain by upright or random Tylotes-Subtylotes which also occur interstitially in the choanosome. Choanosome with multispicular, sinuous tracts of Subtylostyles to Styles.
Distribution: Southern and Central California.
Depth: Intertidal to subtidal.
Note: The Rhaphides reported by de Laubenfels,1932, are immature styles. This species (formerly Tedania topsenti) was placed in the genus Kirkpatrickia by Bakus in 1966. Its placement in Kirkpatrickia (Bakus, 1966) is in error. The species is now Lissodendoryx (Lissodendoryx) topsenti. See pg. 144A for de Laubenfels' description.
Megascleres include Tylostyles and Tylostrongyles (blunt ended Tylostyles).
Lambe, 1893 (see de Laubenfels, 1932)
Sponge: Massive, semihemispherical.
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