Lower Vis´ean ammonoids from the lower Mount Head Formation, east-central British Columbia

목차 (Table of Contents)

• CONTENTS
• Abstract = 1
• R$$e'$$sum$$c'$$ = 1
• Introduction = 3
• Acknowledgments = 7
• Regional stratigraphic setting = 7
• Paleotectonic setting = 9
• Lithofacies in the lower Member of the Mount Head Formation = 12
• Lithofacies 1 : fine grained lime wackestone = 12
• Lithofacies 2 : shale and marlstone = 14
• Lithofacies 3 : massive dolostone = 14
• Lithofacies 4 : skeletal lime floatstone = 15
• Lithofacies 5 : fenestral cryptalgal boundstone = 15
• Lithofacies 6 : microbial boundstone = 15
• Lithofacies 7 : laminated dolostone = 18
• Lithofacies 8 : grainstone = 18
• Environmental interpretations = 18
• Carbonate ramp and platform models = 18
• Environments of deposition of lithofacies in the lower member = 19
• Intermound lithofacies association, lithofacies 1 to 5, 7 and 8 = 20
• Mound facies, lithofacies 6 = 20
• Sequence stratigraphy = 21
• Biostratigraphy of the lower member of the Mount Head Formation = 22
• Tournaisian - Vis$$e'$$an boundary = 22
• Ammonoids = 24
• Polaricyclus canadensis assemblage = 24
• Description = 24
• Age and correlation = 24
• Comparison with middle and late Osagean ammonoids in the North American Midcontinent and Cordillera = 25
• Kansas = 25
• Missouri = 25
• Kentucky = 26
• Michigan = 26
• Utah = 26
• Alaska = 26
• Northwest Territories = 27
• Ammonoid localities = 27
• Systematic paleontology = 28
• Family Prolecanitidae Hyatt, 1884 = 28
• Genus Merocanites Schindewolf, 1922 = 28
• Merocanites rileyi Work and Nassichuk, n. sp. = 29
• Family Prionoceratidae Hyatt, 1884 = 30
• Genus Imitoceras Schindewolf, 1922 = 30
• Imitoceras tardum Work and Nassichuk, n. sp. = 31
• Genus Irinoceras Ruzhencev, 1947 = 32
• Irinoceras bamberi Work and Nassichuk, n. sp. = 34
• Family Pericyclidae Hyatt, 1900 = 34
• Genus Goniocycloides Work and Nassichuk, n. gen. = 35
• Goniocycloides ochakensis Work and Nassichuk, n. sp. = 35
• Genus Polaricyclus Riley, 1991 = 37
• Polaricyclus canadensis Work and Nassichuk, n. sp. = 38
• Family Muensteroceratidae Librovitch, 1957 = 40
• Genus Eurites Kusina, 1973 = 40
• Eurites kusinae Work and Nassichuk, n. sp. = 41
• Genus Dzhaprakoceras Popov, 1965 = 42
• Dzhaprakoceras belcourtense Work and Nassichuk, n. sp. = 44
• Dzhaprakoceras crassum Work and Nassichuk, n. sp. = 45
• Family Furnishoceratidae Work and Nassichuk, n fam. = 46
• Genus Furnishoceras Work and Nassichuk, n. gen = 46
• Furnishoceras heterolobatum Work and Nassichuk n. sp. = 46
• References = 47
• Appendix 1 - Foraminifers and calacerous algae / by B. L. Mamet = 57
• Appendix 2 - Foraminifers calcareous algae and incertae sedis / by P. L. Brenckle = 61
• Appendix 3 - Conodonts / by H. R. Lane = 62
• Appendix 4 - Conodonts / by A. C. Higgins = 63
• Plates 1-3 = 66