Geinitzinoidea
| Geinitzinoidea Temporal range: | |
|---|---|
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| Geinitzina fossil from the Permian of Iran | |
| Scientific classification | |
| (unranked): | SAR |
| (unranked): | |
| Phylum: | |
| Class: | |
| Order: | |
| Superfamily: | Geinitzinoidea Bozorgnia 1973 |
| Families | |
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See text | |
| Synonyms | |
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Geinitzinacea | |
The Geinitzinoidea comprises a superfamily of Upper Devonian to Upper Permian uniserial fusulinids (microgranular foraminifera with chambers aligned in a single row), the chamber walls consisting of a dark microgranular inner layer and radially fibrous outer layer. Advanced forms show secondary lateral thickening
The Geinitzinoidea differs from the Nodosinelloidea in that in the Nodosinelloidea the inner layer is fibrous.
Two families are included, the Geinitzinidae and Pachyphloiidae.
References
- Loeblich, Alfred R.; Tappan, Helen (1964). Moore, R.C. (ed.). Protista 2: Sarcodina Chiefly "Thecamoebians" and Foraminiferida. Treatise on Invertebrate Paleontology. Vol. C (5th ed.). Geological Society of America. ISBN 978-0-8137-3003-5.
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- Alfred R. Loeblich Jr and Helen Tappan,1988. Forminiferal Genera and their Classification. Van Nostrand Reinhold.