sornayina sornayina 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. sornayinatemporal range: coniacian scientific classification domain: eukaryota (unranked): sar (unranked): rhizaria phylum: retaria subphylum: foraminifera subclass: textulariia order: loftusiida family: spirocyclinidae genus: sornayinamarie, 1960