Domain Eukaryota Subphylum Foraminifera Order Loftusiida Rank Genus | Phylum Retaria Subclass Textulariia Family Spirocyclinidae | |
Sornayina is a genus of benthic forams from the Upper Cretaceous (Coniacian) of France included in the Spirocyclinidae. The test is planispirally to slightly asymmetrically coiled, rarely becoming straighter. Microspheric tests reach as much as 3mm in diameter, megalospheric ones are somewhat smaller. Chambers are numerous and are divided into chamberlets by secondary septa.
References
Sornayina Wikipedia(Text) CC BY-SA