Identifying Sponges

Key to California Porifera (Page 202)

( From page 200 A) Microscleres = Sigmaspires OR Spiny Sigmas.
Sponge club-shaped, with conspicuous anchoring root tufts of Anatriaenes. Habitat: Mud flats of bays.
Tetilla sp. A Hartman, 1975
Sponge: Club-shaped up to 22 mm high by 18 mm wide. Has conspicuous anchoring root tufts.
Color: Not recorded.
Spicules: Megascleres: (1) Oxeas: 381 - 1699 um. (2) Prodiaenes/triaenes: 939 to 1900 um. (3) Styles: 436 - 1333 um. (4) Anatriaenes -apparently only in anchor root (not seen in Hartman specimen). Microscleres: (1) Sigmaspires: no measurements
Skeleton: Radial skeleton..
Distribution: Central California.
Depth: Mud flats in San Francisco Bay.
[B] GO TO PAGE 203
Sponge spherical OR subspherical.
Habitat: Open coast attached to rocks.
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