Astrorhizidae

Astrorhizidae
Astrorhizidae
Systematics
without rank: Sar without rank: Rhizaria without rank: Retaria without rank: Foraminifera (Foraminifera) Order : Astrorhizida Family : Astrorhizidae
Scientific name
Astrorhizidae
Brady , 1881

The Astrorhizidae are a family of shell-bearing, sea-dwelling unicellular organisms from the group of foraminifera .

features

The housings are free or attached to the ground and are generally very large, partition walls are missing or only partially present in the center. Two or more arms extend from the center and the apertures are located at each end . The outer wall of the housing is agglutinated, i.e. composed of any particles that have been taken up from the sediment and only loosely cemented together. In addition, the inside of the housing is lined with a protein-based layer.

Systematics

The family has been fossilized since the Middle Ordovician . It was first described by Henry Bowman Brady in 1881 and contains the genera:

• Astrorhiza
• Astrorhizoides
• Pelosina
• Radicle
• Saccodendron
• Amphifenestrella
• Causia
• Inauris
• Vanhoeffenella

proof

• Alfred R. Loeblich, Jr., Helen Tappan: Foraminiferal genera and their classification , E-Book des Geological Survey Of Iran , 2005, Online
• Barun K. Sen Gupta: Systematics of modern Foraminifera , In: Barun K. Sen Gupta (Ed.): Modern Foraminifera . Springer Netherlands (Kluwer Academic), 2002, ISBN 978-1-4020-0598-5 , pp. 23 .