Robertinida
Robertinida | ||||||||||||
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Scientific name | ||||||||||||
Robertinida | ||||||||||||
Loeblich & Tappan , 1984 |
The robertinida are a shell -bearing, sea-dwelling unicellular taxon belonging to the group of foraminifera .
Features and way of life
The species in the group form shells made of translucent aragonite , which they excrete. The housings are multi-chambered and perforated and rolled up from plane spiral to trochospiral.
Systematics
The group has been fossilized since the Triassic period and currently consists of two sub-taxa:
proof
- 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 .
- Alfred R. Loeblich, Jr., Helen Tappan: Foraminiferal genera and their classification , e-book of the "Geological Survey Of Iran" , 2005, online , last accessed on December 28, 2009