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
Type: Dalmanella (Isorthis) szajnochai
Ecology: stationary epifaunal suspension feeder
Distribution:
• Devonian of Afghanistan (1 collection), Australia (24), Belarus (1), Canada (7: British Columbia, Nunavut, Quebec, Yukon), China (10), the Czech Republic (6), France (3), Germany (1), 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)
• Whitwellian of Canada (3: Northwest Territories)
• Jaani of Estonia (6), Lithuania (6)
• Niagaran of Canada (3: Québec)
• Silurian to Devonian of Argentina (1), Australia (1), Canada (1: Nova Scotia), Poland (2), United States (1: Oklahoma)
• Silurian of Argentina (5), Australia (7), Belarus (4), Canada (39: British Columbia, New Brunswick, Northwest Territories, Nova Scotia, Nunavut, Ontario, Quebec, Québec, Yukon Territory), China (17), the Czech Republic (9), Estonia (24), Ireland (3), Latvia (1), Lithuania (42), 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 (51), United States (74: Alabama, Alaska, California, Illinois, Indiana, Iowa, Missouri, Nebraska, Nevada, Oklahoma, Tennessee, Utah, Wisconsin), Venezuela (2)
• Ordovician of Australia (5), Belarus (2), China (1), Estonia (13), Ireland (1), Latvia (2), Lithuania (7), the Russian Federation (3), the United Kingdom (1)
Total: 502 collections including 530 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.