Correlation of the Cambrian Evolutionary Radiation: geochronology, evolutionary stasis of earliest Cambrian (Terreneuvian) small shelly fossil (SSF) taxa, and chronostratigraphic significance
| Title | Correlation of the Cambrian Evolutionary Radiation: geochronology, evolutionary stasis of earliest Cambrian (Terreneuvian) small shelly fossil (SSF) taxa, and chronostratigraphic significance |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | Landing, E, Kouchinsky, A |
| Journal | Geological Magazine |
| Volume | 153 |
| Issue | 4 |
| Pagination | 750-756 |
| Date Published | 02/2016 |
| ISSN | 0016-7568 |
| Keywords | Cambrian Evolutionary Radiation, Meishucunian, Siberia, Terreneuvian, Tommotian |
| Abstract | Early faunas with Watsonella crosbyi with or without Aldanella spp. have been equated with the Siberian Tommotian Stage (uppermost Terreneuvian) and used to define a proposed Cambrian Stage 2 base. Much earlier Terreneuvian occurrences are now shown by recovery of these micromolluscs below the I’ carbon excursion in the Siberian ‘Nemakit-Daldynian’ Stage and comparable δ13C excursions in the middle Meishucunian (China) and middle Chapel Island Formation (Avalonia). This δ13C excursion, a reliable Stage 2 marker, lies in a c. 10 Ma interval in the Cambrian Radiation in which long-ranged small shelly fossil taxa provide limited biostratigraphic resolution. |
| URL | http://www.journals.cambridge.org/abstract_S0016756815001089 |
| DOI | 10.1017/S0016756815001089 |
| Short Title | Geol. Mag. |
