SPONGE SPICULES FROM THE LOWER ORDOVICIAN OF WISCONSIN
β Scribed by Needham, C. E.
- Book ID
- 121127919
- Publisher
- American Association for the Advancement of Science
- Year
- 1933
- Tongue
- English
- Weight
- 86 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0036-8075
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
An association of silicified spicules of hexactinellid sponges was collected from Silurian sandstones at the top of the La Chilca Formation, cropping out at Cerro del Fuerte, 20βkm east of JΓ‘chal, in the San Juan Precordillera of westβcentral Argentina. This is the first occurrence of a Silurian spi
## Abstract A synchrotron radiation fiber diffraction structural study of the axial filament of siliceous spicules from two species of marine sponges (the Demosponge __Geodia cydonium__ and the Hexactinellid __Scolymastra joubini__) was carried out. The sharpness of the spots in the diffraction pat