Cover page -- Publishing information -- Title page -- Copyright -- Contents -- Abstract -- Résumé -- Acknowledgements -- Introduction -- Geological setting -- Biostratigraphy -- Paleoecology -- The Kjaerina hartae Community -- The Diceromyonia storeya Community -- Paleobiogeography -- Systematic Paleontology -- Order Orthida Schuchert and Cooper, 1932 -- Superfamily Orthoidea Woodward, 1852 -- Family Plaesiomyidae Schuchert, 1913 -- Genus Dinorthis Hall and Clarke, 1982 -- Dinorthis occidentalis (Okulitch, 1943) -- Family Plectorthidae Schuchert and LeVene, 1929 -- Genus Gnamptorhynchos Jin, 1989 -- Gnamptorhynchos manitobensis Jin and Zhan, 2000 -- Superfamily Dalmanelloidea Schuchert, 1913 -- Family Platyorthidae Harper, Boucot, and Walmsley, 1969 -- Genus Diceromyonia Wang, 1949 -- Diceromyonia storeya (Okulitch, 1943) -- Order Strophomenida Öpik, 1934 -- Superfamily Plectambonitoidea Jones, 1928 -- Family Sowerbyellidae Öpik, 1930 -- Genus Thaerodonta Wang, 1949 -- Thaerodonta clarksvillensis (Foerste, 1912) -- Superfamily Strophomenoidea King, 1846 -- Family Strophomenidae King, 1846 -- Genus Strophomena Rafinesque in de Blainville, 1824 -- Strophomena planumbona (Hall, 1847) -- Strophomena vetusta James, 1874 -- Genus Nasutimena n. gen. -- Nasutimena fluctuosa (Billings, 1860) -- Nasutimena undulosa (Roy, 1941) -- Genus Holtedahlina Foerste, 1924 -- Holtedahlina paraprostrata n. sp. -- Genus Tetraphalerella Wang, 1949 -- Tetraphalerella neglecta (James, 1881) -- Tetraphalerella churchillensis Jin, Caldwell, and Norford, 1997 -- Family Rafinesquinidae Schuchert, 1893 -- Genus Kjaerina Bancroft, 1929 -- Kjaerina hartae Jin, Caldwell, and Norford, 1995 -- Genus Megamyonia Wang, 1949 -- Megamyonia nitens (Billings, 1860) -- Family Oepikinidae Sokolskaya, 1960 -- Genus Oepikina Salmon, 1942 -- Oepikina lata (Whiteaves, 1896).

Oepikina limbrata Wang, 1949 -- Order Pentamerida Schuchert and Cooper, 1931 -- Superfamily Porambonitoidea Davidson, 1853 -- Family Parastrophinidae Ulrich and Cooper, 1938 -- Genus Parastrophinella Schuchert and Cooper, 1931 -- Parastrophinella cirrita n. sp. -- Order Rhynchonellida Kuhn, 1949 -- Superfamily Rhynchonelloidea Gray, 1848 -- Family Rhynchotrematidae Schuchert, 1913 -- Genus Rhynchotrema Hall, 1860 -- Rhynchotrema increbescens (Hall, 1847) -- Rhynchotrema iowense Wang, 1949 -- Genus Lepidocyclus Wang, 1949 -- Lepidocyclus laddi Wang, 1949 -- Genus Hypsiptycha Wang, 1949 -- Hypsiptycha anticostiensis (Billings, 1862) -- Hypsiptycha occidens (Wilson, 1926) -- Genus Hiscobeccus Amsden, 1983 -- Hiscobeccus capax (Conrad, 1842) -- Hiscobeccus gigas (Wang, 1949) -- References -- Appendix A: Ashgill brachiopod faunal data for paleobiographic analysis -- Appendix B: Locality data -- 1. GSC localities -- 2. Manitoba Museum of Man and Nature (MMMN) collections -- Plates 1-23 -- Plate 1 -- Plate 2 -- Plate 3 -- Plate 4 -- Plate 5 -- Plate 6 -- Plate 7 -- Plate 8 -- Plate 9 -- Plate 10 -- Plate 11 -- Plate 12 -- Plate 13 -- Plate 14 -- Plate 15 -- Plate 16 -- Plate 17 -- Plate 18 -- Plate 19 -- Plate 20 -- Plate 21 -- Plate 22 -- Plate 23.