Ludlow and Pridoli (Upper Silurian) graptolites from the Arctic Islands, Canada - Lenz, Alfred C. (NRC Research Press, 2004)
"A publication of the National Research Council of Canada Monograph Publishing Program.". - "NRC No. 46842"--Title page verso
Issued by: National Research Council Canada
Includes bibliographical references (pages 39-42)
Cover -- Contents -- Abstract/Résumé -- Acknowledgments -- Introduction -- Stratigraphy -- Non-graptolite faunas -- Biostratigraphy -- Biozonal correlation, species diversity, and biogeography -- Evolutionary developments in Ludlow and Pridoli graptolites -- Systematic paleontology -- Order DENDROIDEA Nicholson, 1872 -- Genus Dictyonema Hall, 1851 -- Dictyonema sp. -- Genus Acanthograptus Spencer, 1878 -- Acanthograptus? sp. -- Genus Thallograptus Ruedemann, 1925 -- Thallograptus? sp. 1 -- Thallograptus? sp. 2 -- Thallograptus? sp. 3 -- Thallograptus sp. 4 -- Genus Dendrograptus Hall, 1858 -- Dendrograptus sp. -- Dendroid indet -- Order TUBOIDEA Kozlowski, 1938 -- Genus Epigraptus Eisenack, 1941 -- Epigraptus? sp. -- Order GRAPTOLOIDEA Lapworth, 1873 -- Suborder VIRGELLINA Fortey and Cooper, 1986 -- Superfamily DIPLOGRAPTOIDEA Lapworth, 1873 (sensu Mitchell, 1987) -- References -- Appendix 1: Distribution of species of flattened graptolites in each section -- Appendix 2: Distribution of isolated, three-dimensionally preserved graptolites in each section
Graptolites flourished from earliest Ordovician to Early Devonian, a time range of about 90 million years, and were widely distributed as marine benthic and planktonic colonial organisms around then-world