Species Overview

310
KeyPics/cc260A.jpg

Staurocalyptus dowlingi (Lambe, 1893).

Synonyms:

DEFINING CHARACTERS:
Discoctaster diameter >200 Ám.
SPONGE:
Shape: Saccate with all lateral and marginal projecting spicules as Diactins.
Color_Dry: Light brownish yellow.
HABITAT:
Benthic Region: Marine: Deep water
Distribution: Southern California extending north to Aleutian Id. Alaska.

CHARACTERS

Skeleton:
Composition: Silicate (hexactin)
Architecture: Entirely of loose spicules.
Megasclere:
Shape: Principal Diactins
Length: 2.20-4.10-9.00 mm
Megasclere:
Shape: Thick Prostal Diactins
Length: --60.00 mm
Width: -300- Ám
Megasclere:
Shape: Hypodermal Pentactins
Length-tangential ray: 420 -2060- 4350 Ám
Length-proximal ray: 4.20-8.10-11.70 mm
Megasclere:
Shape: Small Diactins
Length: 590 -950- 1740 Ám
Mesosclere:
Shape: Dermal Pentactins
Length-tangential ray: 64 -105- 166 Ám
Length-proximal ray: 68 -99- 122 Ám
Mesosclere:
Shape: Gastral Hexactins
Length-ray: 57 -85- 118 Ám
Microsclere:
Shape: Oxyhexasters to Hemioxyhexasters
Diameter: 96 -127- 159 Ám
Microsclere:
Shape: Discoctasters
Diameter: 184 -256- 310 Ám
Microsclere:
Shape: Microdiscohexasters
Diameter: 16 -22- 27 Ám