| 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] |
Pilina is an extinct genus of paleozoic monoplacophorans in the family Tryblidiidae.
Species in the genus Pilina include: [2]
The Bellerophontidae are an extinct family of specialized globose bellerophontids, Paleozoic and early Triassic mollusks of the class Gastropoda.
Scutus is a genus of large sea snails or limpets with the common name "shield shells". These are marine gastropod molluscs in the family Fissurellidae, the keyhole limpets and slit limpets.
Calymene Brongniart, 1822, is a genus of trilobites in the order Phacopida, suborder Calymenina, that are found throughout North America, North Africa, and Europe in primarily Silurian outcrops. Calymene is closely related to Flexicalymene, and both genera are frequently found enrolled. Calymene trilobites are small, typically 2 cm in length. The cephalon is the widest part of the animal and the thorax usually has 13 segments.
Eucyclidae is a family of gastropods in the superfamily Seguenzioidea.
†Archinacellidae is an extinct family of paleozoic molluscs of uncertain position.
Bucanellidae is an extinct family of Paleozoic molluscs of uncertain position, belonging either to Gastropoda (snails) or Monoplacophora. The family lived from the upper Cambrian to middle Permian and the shells are characterized by a relatively small median sinus in the upper margin of the aperture, and collabral (transverse) or spiral (longitudinal) threads covering the shell. The shells are planispirally coiled rather than trochospirally with a spire as is the case with most shelled gastropods.
The Anomphalidae is an extinct family of fossil sea snails, marine gastropod mollusks. These are archaeogastropods which are included in the suborder Trochina. The Anomphalidae lived during the Paleozoic, from the Silurian to the Middle Permian. According to some authorities these snails belong instead to the Euomphalacea.
Isospiridae is an extinct family of fossil sea snails, Paleozoic gastropod mollusks.
Craspedostomatidae is an extinct taxonomic family of fossil sea snails, marine, gastropod mollusks in the subclass Gastropoda incertae sedis, unassigned in the class Gastropoda.
Tryblidium reticulatum is an extinct species of a paleozoic Silurian monoplacophoran.
Tryblidium is a paleozoic genus of Ordovician and Silurian monoplacophorans.
Pilina unguis is an extinct species of Paleozoic Silurian monoplacophoran. It was first named as Tryblidium unguis and described by Gustaf Lindström in Latin from the Silurian deposits of Gotland in Sweden, in 1880.
Tryblidiidae is an extinct family of paleozoic monoplacophorans in the superfamily Tryblidioidea.
Helcionopsis is an extinct genus of paleozoic monoplacophoran in the family Tryblidiidae.
Pilina solarium is an extinct species of a paleozoic Silurian monoplacophoran. It was first named as Palaeacmaea solarium and described by Gustaf Lindström from Silurian of Gotland in Sweden in 1884.
Pleurotomaria is an extinct genus of sea snails, marine gastropod molluscs in the family Pleurotomariidae.
Mangelia is a large genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Ringicula is a genus of minute deepwater sea snails, marine gastropod molluscs or micromolluscs belonging to the family Ringiculidae.
Holopea is an extinct genus of fossil sea snails, Paleozoic gastropod mollusks in the family Holopeidae.
Truncatelloidea is a superfamily of snails, gastropod mollusks in the clade Caenogastropoda.