Sornayina

Sornayina
Temporal range: Coniacian
Scientific classification
Domain:
Eukaryota
(unranked):
SAR
(unranked):
Rhizaria
Phylum:
Retaria
Subphylum:
Foraminifera
Subclass:
Textulariia
Order:
Loftusiida
Family:
Spirocyclinidae
Genus:
Sornayina

Marie, 1960

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.[1] [2]

References

  1. ↑ Sornayina in GSI Paleontology
  2. ↑ A.R.Loeblich & H.Tappan 1964. Sarcodina, Chiefly "Thecamoebians" and Foraminiferida. Treatise on Invertebrate Paleontology, Part C, Protista 2.


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