Species Overview

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KeyPics/cc212A.jpg

Plakina bioxea Green & Bakus, 1994.

Synonyms:

SPONGE:
Shape: Lamellar with smooth scalloped edges
Color_Preserved: White to light tan
Consistency: firm but compressible
HABITAT:
Benthic Region: Marine: Deep water
Distribution: Southern California to ? Central California.

CHARACTERS

Surface:
Texture: Smooth
Contour: scattered raised conules: 0.5 - 0.8 mm high
Ectosome:
Dermal membrane -thin; granular in appearance; otherwise unorganized:
Spicules: densly packed with Calthrops
Choanosome:
Architecture: Basal layer of spicule tracts: these 0.150 - 0.200 mm in diameter (about 50 spicules thick); otherwise unorganized with crowded Calthrops and some Microxeas
Megasclere:
Shape: Oxeas
Length: 68 - (96|166)- 179 Ám
Width: 2 -(4|6)- 8 Ám
Megasclere:
Shape: Oxeas
Length: 160 -(504|679)- 1160 Ám
Width: N(Ám)
Megasclere:
Shape: Oxeas
Length: 800 -1125- 1280 Ám
Microsclere:
Shape: Calthrops
Length-highly modified: N(Ám)
Microsclere:
Shape: Calthrops
Length-(ray): 110 -208- 290 Ám
Microsclere:
Shape: Microxea
Note: No length measurements given
Skeleton:
Composition: Silicate
Architecture: Basal layer of spicule tracts: these 0.150 - 0.200 mm in diameter (about 50 spicules thick); otherwise unorganized with crowded Calthrops and some Microxeas