Albertiana 42 33 INTRODUCTION his paper introduces new conodont taxa from the Anisian of northeastern British Columbia, and new biostratigraphical correlations based on their distribution. This work both summarises and expands upon observations and conclusions made by Golding (2014). Ammonoids and conodonts are the two most useful and widely used taxonomic groups for biostratigraphical subdivision of the marine Anisian. he base of the Anisian has not yet been deined by a Global Boundary Stratotype Section and Point (GSSP; Ogg et al., 2014). he only candidate section so far proposed is at Desli Caira in Romania, where the boundary has been proposed at the irst appearance of the conodont Chiosella timorensis (Nogami) (Gradinaru et al., 2007; Orchard et al., 2007 a). However, the irst appearance of this species is now known to occur with Spathian (upper Olenekian) ammonoids of the Neopopanoceras haugi Zone in Nevada and China (Ovtcharova et al., 2010; Goudemand et al., 2012), therefore its use as a deinitive index species for the base of the Anisian is questionable, and would require the Neopopanoceras haugi Zone to be re-deined as Anisian in part. he complementary section at Guandao in China (Lehrmann et al., 2006) provides a superior conodont record (Orchard et al., 2007b), but lacks good ammonoid control A SUMMARY OF NEW CONODONT BIOSTRATIGRAPHY AND CORRELATION OF THE ANISIAN (MIDDLE TRIASSIC) STRATA IN BRITISH COLUMBIA, CANADA Martyn L. Golding 1 , Michael J. Orchard 2 , and John-Paul Zonneveld 3 Research Article Abstract – New conodont collections from both outcrop sections and subsurface drill core improve the correlation of Anisian (Middle Triassic) strata in British Columbia. New conodont species and morphotypes identiied in these collections are used to deine new informal conodont faunal assemblages. his preliminary biostratigraphical scheme allows correlation of the Anisian between surface and subsurface sections in British Columbia for the irst time, as illustrated by four of the sections studied. Improved correlation has led to a revision of the interpretation of the depositional environment of Anisian rocks in British Columbia, from that of a continental margin to that of a restricted basin. he recognition of some of the new conodont taxa in collections from Nevada and the Canadian Arctic indicates that some of the faunal assemblages may prove useful for regional correlation and placement of the sub-stage boundaries of the Anisian. 1 Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, 2020-2207 Main Mall, Vancouver, British Columbia, Canada V6T 1Z4. Email: mgolding@eos.ubc.ca 2 Natural Resources Canada - Geological Survey of Canada, 1500 - 605 Robson Street, Vancouver, British Columbia, Canada, V6B 5J3. Email: morchard@nrcan.gc.ca 3 Ichnology Research Group, Department of Earth & Atmospheric Sciences, University of Alberta, Edmonton, Alberta, Canada, T6G 2E3. Email: zonnevel@ualberta.ca Figure 1 – Existing ammonoid and conodont biozonation of the Anisian in British Columbia based on Orchard and Tozer (1997). L = Lower, M = Middle, U = Upper.