Calyptraea diegoana Conrad 1855 (slipper shell)

Gastropoda - Calyptraeoidea - Calyptraeidae

Alternative combination: Trochita diegoana

Synonyms: Calyptraea (Galerus) calabasasensis Nelson 1925, Calyptraea calabasaensis Nelson 1925, Calyptraea calabasasensis Nelson 1925, Calyptraea excentrica Gabb 1864, Calyptraea washingtonensis Weaver 1916, Galerus excentricus Gabb 1864

Full reference: T. A. Conrad. 1855. Report Of Mr. T. A. Conrad On The Fossil Shells Collected In California By Wm. P. Blake, Geologist Of The Expedition Under The Command Of Lieutenant R. S. Williamson, United States Topographical Engineers. Description of the fossils and shells collected in California by William P. Blake, Geologist of the United States Pacific Railroad Survey in California. under the command of Lieut. R. S. Williamson, In 1853-54. Article 1 of Appendix to the Preliminary Geological Report of WIlliam P. Blake, Geologist of the Survey in California Under the Command of Lieut. R. S. Williamson. Palæontology 5-21

Belongs to Calyptraea according to A. E. Oleinik and L. Marincovich 2003

See also Addicott 1973, Clark and Woodford 1927, Conrad 1855, Durham 1944, Gabb 1864, Hanna 1927, Squires 1984, Squires 1987, Squires 1988, Squires 1999, Stewart 1927 and Turner 1938

Sister taxa: Calyptraea (Bicatillus), Calyptraea (Calyptraea), Calyptraea (Calyptropsis), Calyptraea (Galerus), Calyptraea (Siphopatella), Calyptraea (Trochatella), Calyptraea (Turbocalyptraea), Calyptraea centralis, Calyptraea chinensis, Calyptraea contorta, Calyptraea coreyi, Calyptraea corrugata, Calyptraea corrugata, Calyptraea crassa, Calyptraea diabloensis, Calyptraea dunni, Calyptraea elevata, Calyptraea fastigiata, Calyptraea filosa, Calyptraea kilburni, Calyptraea laevigata, Calyptraea lamellosa, Calyptraea martini, Calyptraea nigeriensis, Calyptraea nigeriensis, Calyptraea pileus, Calyptraea placuna, Calyptraea ramsisi, Calyptraea rugosa, Calyptraea sookensis, Calyptraea sorachiensis, Calyptraea subtabulata, Calyptraea trochiformis, Calyptraea undulata

Ecology: facultatively mobile epifaunal suspension feeder


• Miocene of United States (1: Alaska collection)

• Oligocene of United States (6: California, Oregon, Washington)

• Eocene to Oligocene of United States (1: Oregon)

• Eocene of the Russian Federation (4), United States (87: California, Oregon, Washington)

• Paleocene to Eocene of United States (1: California)

• Paleocene of United States (3: California)

Total: 103 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.

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