Pilina
Pilina is an extinct genus of paleozoic monoplacophorans in the family Tryblidiidae.
| Pilina Temporal range:   | |
|---|---|
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| Drawing of the shell of Pilina unguis. Head region is on the left. | |
| Scientific classification  | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Mollusca | 
| Class: | Monoplacophora | 
| Order: | Tryblidiida | 
| 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
    
- Koken E. & Perner J. 1925. Die Gastropoden des baltischen Untersilurs. 324 pp.
 - Pilina. The Paleobiology Database, accessed 25 August 2009.
 - 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.
 - Koken E. 1897. Die Gastropoden des baltischen Untersilurs. Bulletin de l'Académie Impériale des Sciences de St. Pétersburg 7(2):97-214.
 - Lindström G. 1884. On the Silurian Gastropoda and Pteropoda of Gotland. Stockholm, 250 pp. Page 59, plate 19, figure 3-4.
 - (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.
 
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