Species Overview

Plakina bioxea Green & Bakus, 1994.

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.

Surface:

Texture: Smooth
Contour: scattered raised conules: 0.5 - 0.8 mm high

Ectosome:

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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 µ
Width: 2 -(4|6)- 8 µ

Megasclere:

Shape: Oxeas
Length: 160 -(504|679)- 1160 µ
Width: N(µm)

Megasclere:

Shape: Oxeas
Length: 800 -1125- 1280 µ

Microsclere:

Shape: Calthrops
Length-highly modified: N(µm)

Microsclere:

Shape: Calthrops
Length-(ray): 110 -208- 290 µ

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