Pilina

Pilina is an extinct genus of paleozoic monoplacophorans in the family Tryblidiidae.

Pilina Temporal range: Ordovician–Silurian PreꞒ Ꞓ O S D C P T J K Pg N
Drawing of the shell of Pilina unguis. Head region is on the left.
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Monoplacophora
Order:	Tryblidiida
Superfamily:	Tryblidioidea
Family:	Tryblidiidae
Genus:	Pilina Koken & Perner, 1925[1]

Species

Species in the genus Pilina include:[2]

• Pilina acuminatum Perner (in Koken & Perner), 1925[1]
• Pilina cheyennica Peel, 1977[3] - from Ordovician in the Keel Member in Oklahoma
• Pilina esthonum (Koken, 1897)[4] - synonym: Triblidium esthonum
• Pilina ovoideum Perner (in Koken & Perner), 1925[1]
• Pilina solarium (Lindström, 1884)[5] - synonym: Palaeacmaea solarium
• Pilina unguis (Lindström, 1880)[6] - synonym: Tryblidium unguis

References

1. Koken E. & Perner J. 1925. Die Gastropoden des baltischen Untersilurs. 324 pp.
2. Pilina. The Paleobiology Database, accessed 25 August 2009.
3. Peel J. S. 1977. Relationship and Internal Structure of a New Pilina (Monoplacophora) from the Late Ordovician of Oklahoma. Journal of Paleontology, Vol. 51, No. 1 (Jan., 1977), pp. 116-122.
4. Koken E. 1897. Die Gastropoden des baltischen Untersilurs. Bulletin de l'Académie Impériale des Sciences de St. Pétersburg 7(2):97-214.
5. Lindström G. 1884. On the Silurian Gastropoda and Pteropoda of Gotland. Stockholm, 250 pp. Page 59, plate 19, figure 3-4.
6. (in Latin) Angelin N. P. & Lindström G. 1880. Fragmenta Silurica e dono Caroli Henrici Wegelin. Opus studio Nicolai Petri Angelin Inchoatum Jussu et Impensis Academiae Regiae Scientarum Suecicae. Samson & Wallin (Holmiae), 60 pp. Page 16, plate 2, figure 10-15.