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100   $a20051118d2004      uy             0
101 0 $aeng
135   $aur|n|---|||||
181   $ctxt
182   $cc
183   $acr
200 10$aLudlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada$b[electronic resource]
210   $aOttawa $cNRC Research Press$dc2004
215   $a1 online resource (151 p.)
300   $aDescription based upon print version of record.
311   $a0-660-19326-4 
327   $aAbstract / Re?sume?; 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; Genus Acanthograptus Spencer, 1878; Genus Thallograptus Ruedemann, 1925; Genus Dendrograptus Hall, 1858; Order TUBOIDEA Kozlowski, 1938; Genus Epigraptus Eisenack, 1941; Order GRAPTOLOIDEA Lapworth, 1873; Suborder VIRGELLINA Fortey and Cooper, 1986; References
327   $aAppendix 1: Distribution of species of flattened graptolites in each sectionAppendix 2: Distribution of isolated, three-dimensionally preserved graptolites in each section; Plates 1-46
330   $aGraptolites 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. They were diverse and rapidly evolving and, as such, make excellent ""index fossils"" for relative age-dating of their enclosing basinal rocks.
606   $aGraptolites
606   $aChordata, Fossil
615  0$aGraptolites.
615  0$aChordata, Fossil.
676   $a563/.55
700   $aKoz?owska-Dawidziuk$b Anna$f1958-$01568565
701   $aLenz$b Alfred C.$f1929-$01568566
712 02$aNational Research Council Canada.$bMonograph Publishing Program.
801  0$bMiAaPQ
801  1$bMiAaPQ
801  2$bMiAaPQ
906   $aBOOK
912   $a9910784321303321
996   $aLudlow and Pridoli (Upper Silurian) Graptolites from the Arctic Islands, Canada$93840777
997   $aUNINA