Species Overview

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KeyPics/cc081A.jpg

Amphimedon trindania (Ristau, 1978)

Synonyms:
Xestospongia trindania (Ristau,1978).

SPONGE:
Shape: Encrusting
Size_thickness: 4--12 mm
Color_Alive: Dark brown to cinnamon
Color_Preserved: dark brown to cinnamon
Consistency: firm and hard -slightly compressible
SPONGE:
Shape: erectly lobate
Size_Volume: 8 x 3 x 5 cm
Color_Alive: Dark brown to cinnamon
Color_Preserved: dark brown to cinnamon
Consistency: firm and hard-slightly compressible
HABITAT:
Benthic Region: Marine: Intertidal to Subtidal
Depth: 0--38 m
Distribution: Central California

CHARACTERS

Surface:
Texture: slightly hispid
Contour: somewhat conulose
Oscula:
Diameter: 1.5--5.0 mm
Rims: flush with surface
Distribution: either in defined lineations or spread over surface
Ectosome:
Architecture: No easily seen special ectosomal skeleton
Choanosome:
Architecture: a reticulation of large multispicular tracts and spicules in confusion
Major tracts: 100 - 160 mm wide.
Meshes: 200-800 x 100-400 mm.
Spicules: Interstitial Oxeas smaller than those in tracts
Megasclere:
Shape: Oxeas
Length: 115 - -200
Width: 2 - -8 Ám
Megasclere:
Shape:
Length: 240 - -260 Ám
Width: 18 - -20 Ám
Skeleton:
Composition: Silicate