Cyrtonotella Schuchert and Cooper 1931 (lamp shell)

Rhynchonellata - Orthida - Archaeorthidae

Parent taxon: Archaeorthidae according to A. Williams et al. 2007

See also Alikhova 1953, Mitchell 1977, Rubel 1961, Sepkoski 2002 and Williams et al. 2000

Sister taxa: Archaeorthis, Diplonorthis, Nicoloidea, Nothorthis, Pleurorthis, Riograndella, Xinanorthis

Subtaxa: Cyrtonotella grandistriata Cyrtonotella kuckersiana Cyrtonotella nicholsoni Cyrtonotella semicircularis Cyrtonotella subfissicosta Cyrtonotella virginiensis

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Type: Cyrtonotella pakriensis

Ecology: stationary epifaunal suspension feeder


• Ordovician of Belarus (3 collections), Estonia (18), Latvia (4), Lithuania (5), the Russian Federation (14), Sweden (1), the United Kingdom (5), United States (2: Tennessee, Virginia)

• Llandeilo of the United Kingdom (3)

• Whiterockian of United States (2: Nevada)

• Arenig of Argentina (1)

Total: 58 collections including 59 occurrences

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Specimen images are retrieved through the ePANDDA API.

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