Sigapatella is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of small to medium-sized sea snail

Snail

Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...

s, marine

Marine (ocean)

Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 gastropod molluscs in the family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Calyptraeidae

Calyptraeidae

Calyptraeidae, common name the slipper snails or slipper limpets, cup-and-saucer snails, and Chinese hat snails are a family of small to medium-sized marine prosobranch gastropods...

, the slipper snails, Chinese hat snails, and cup-and-saucer snails.

Taxonomy

It was originally named Calyptraea (Sigapatella) by Lesson in 1830. In 1990 it was brought to the rank of genus as Sigapatella by Beu et al. and confirmed in 2000 by Camacho et al. (2000)

Description

The oval shell has a lateral apex

Apex (mollusc)

Apex is an anatomical term for the tip of the mollusc shell of a gastropod, scaphopod, or cephalopod mollusc.-Gastropods:The word "apex" is most often used to mean the tip of the spire of the shell of a gastropod...

. The interior plate has a submarginal axis. The free margin is concave.

Species

Species within the genus Sigapatella include:

• † Sigapatella americana Ortmann 1900
• Sigapatella calyptraeformis (Lamarck)
• Sigapatella hedleyi (Smith, 1915) Hedley's shelf limpet
• † Sigapatella mapalia Marwick
  John Marwick
  John Marwick MM was a New Zealand palaeontologist and geologist.John Marwick was born near Oamaru, New Zealand, on 3 February 1891, the son of Hugh Marwick, and his wife, Jane née Cuthbert. While at Waitaki Boys' High School he helped to collect fossil shells and learned the beginnings of how to...
  
  , 1929
• Sigapatella novaezelandiae
  Sigapatella novaezelandiae
  Sigapatella novaezelandiae, common name the circular slipper limpet, is a species of medium-sized sea snail, a marine gastropod molluscs in the family Calyptraeidae.-Description:...
  
  (Lesson, 1830)
• Sigapatella nukumaruana
  Sigapatella nukumaruana
  Sigapatella nukumaruana is a species of sea snail, a marine gastropod mollusk in the family Calyptraeidae, the slipper snails or slipper limpets, cup-and-saucer snails, and Chinese hat snails....
  
  Marshall, 2003
• Sigapatella ohopeana
  Sigapatella ohopeana
  Sigapatella ohopeana is a species of sea snail, a marine gastropod mollusk in the family Calyptraeidae, the slipper snails or slipper limpets, cup-and-saucer snails, and Chinese hat snails....
  
  Marshall, 2003
• Sigapatella patulosa Powell and Bartrum, 1929
• Sigapatella spadicea Boshier, 1961
• Sigapatella superstes
  Sigapatella superstes
  Sigapatella superstes is a species of medium-sized sea snail, a marine gastropod mollusc in the family Calyptraeidae.-References:* Powell A. W. B., William Collins Publishers Ltd, Auckland 1979 ISBN 0-00-216906-1...
  
  Fleming, 1958
• Sigapatella tenuis (Gray, 1867)
• Sigapatella terraenovae
  Sigapatella terraenovae
  Sigapatella terraenovae is a species of sea snail, a marine gastropod mollusc in the family Calyptraeidae.- References :* Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1...
  
  (Peile, 1924)
• Sigapatella subvaricosa Powell and Partrum, 1929
• Sigapatella vertex J. Marwick, 1926

• Sigapatella (Sigapatella) maccoyi (Suter, 1917)
• Sigapatella (Spirogalerus) lamellaria (Finlay & Marwick, 1937) (synonym: Spirogalerus lamellaria Finlay & Marwick 1937)

Species brought into synonymy:

• Sigapatella maculata Suter
  Henry Suter
  Henry Suter was a New Zealand zoologist, naturalist, palaeontologist, and malacologist.- Biography :...
  
  , 1913 : synonym of Sigapatella novaezelandiae (Lesson, 1830)