Species Overview

293
KeyPics/cc243A.jpg

Hyalonema (Oonema) bianchoratum Wilson, 1904.

Synonyms:

DEFINING CHARACTERS:
Principalia = Diactins and Hexactins.
Marginalia = Pinular Diactins or NONE.
NO Sceptres or Uncinates.
Microscleres 2 types of macroamphidiscs.
SPONGE:
Shape: Cup-shaped with deep atrial cavity.
Color: not reported
HABITAT:
Benthic Region: Marine: Deep water.
Distribution: Central California.

CHARACTERS

Skeleton:
Composition: Silicate (hexactin)
Architecture: Entirely composed of loose spicules.
Megasclere:
Shape: Diactins
Length: 500 -(1500|2000)- 6000 Ám
Megasclere:
Shape: Hexactins
Length-ray: 200 -850- 3500 Ám
Megasclere:
Shape: Pentactins
Length-tangential ray: 350 -- 850 Ám
Megasclere:
Shape: Basals (Lost)
Mesosclere:
Shape: Pentactins
Length-pinulus: 175--530 Ám
Length-basal ray: 30 - 44- 60 Ám
Mesosclere:
Shape: Marginal Diactins (Lost or absent)
Mesosclere:
Shape: Acanthophores (No data)
Microsclere:
Shape: Macroamphidiscs (normal)
Diameter: -455- Ám
Microsclere:
Shape: Macroamphidiscs (barrel-form)
Diameter: 150 -- 250 Ám
Microsclere:
Shape: Mesamphidiscs
Diameter: 60 -- 80 Ám
Microsclere:
Shape: Micramphidiscs
Diameter: 28-- Ám
Microsclere:
Shape: Microxyhexactins
Diameter: 40 -50- 60 Ám