Isorthis Kozlowski 1929 (lamp shell)

Rhynchonellata - Orthida - Dalmanellidae

Parent taxon: Isorthinae according to M. Rubel 2011

See also Bassett and Cocks 1974, Hints 1975, Jin and Chatterton 1997, Sepkoski 2002, Villas and Cocks 1996, Williams et al. 2000 and Wright 1964

Sister taxa: Costisorthis, Levenea, Peleicostella, Protocortezorthis, Tyersella

Subtaxa: Isorthis (Arcualla) Isorthis (Isorthis) Isorthis (Ovalella) Isorthis (Protocortezorthis) Isorthis alpha Isorthis bailyi Isorthis crassa Isorthis estona Isorthis festiva Isorthis loveni Isorthis mediocra Isorthis parvulus Isorthis pygmaea Isorthis slitensis

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Type: Dalmanella (Isorthis) szajnochai

Ecology: stationary epifaunal suspension feeder

Distribution:

• Devonian of Afghanistan (1 collection), Argentina (1), Australia (28), Belarus (1), Canada (7: British Columbia, Nunavut, Quebec, Yukon), China (10), the Czech Republic (5), France (3), Germany (2), Italy (2), Kazakhstan (1), New Zealand (1), Poland (4), the Russian Federation (6), Spain (1), Tajikistan (2), Ukraine (4), United States (23: Alaska, Nevada, New York, Oklahoma, Tennessee, West Virginia, Maryland, Pennsylvania)

• Clinton of Canada (3: British Columbia)

• Silurian to Devonian of Argentina (1), Australia (1), Canada (1: Nova Scotia), Poland (2), United States (1: Oklahoma)

• Silurian of Argentina (5), Australia (8), Belarus (5), Canada (39: New Brunswick, Northwest Territories, Nova Scotia, Nunavut, Ontario, Quebec, Québec, Yukon Territory), China (17), the Czech Republic (9), Estonia (30), Ireland (3), Lithuania (43), Mexico (10), Mongolia (9), New Zealand (1), Norway (12), Poland (2), the Russian Federation (11), Spain (1), Sweden (12), Tajikistan (1), Ukraine (9), the United Kingdom (53), United States (72: Alabama, Alaska, California, Illinois, Indiana, Iowa, Missouri, Nebraska, Nevada, Oklahoma, Tennessee, Utah, Wisconsin), Venezuela (2)

• Niagaran of Canada (3: Québec)

• Ordovician of Australia (5), Belarus (2), China (1), Estonia (13), Ireland (1), Latvia (1), Lithuania (3), the Russian Federation (1), the United Kingdom (1)

Total: 496 collections including 531 occurrences

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Specimen images are retrieved through the ePANDDA API.


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