Contents Volume 94, 1992 The "terminal Triassic catastrophic extinction event" in perspective: a review of Carboniferous through Early Jurassic terrestrial vertebrate extinction patterns R. E. Weems (Reston, VA, USA) .............................................................................................................................................. 1 Tectonic setting and paleoenvironment of terranes in the southern New England orogen, eastern Australia as constrained by radiolarian biostratigraphy J. C. Aitchison (Sydney, NSW, Australia), P. G. Flood and F. C. P. Spiller (Armidale, NSW, Australia) ............................... 31 Pliocene and Pleistocene geologic and climatic evolution in the San Luis Valley of south-central Colorado K. L. Rogers (Alamosa, CO, USA), E. L. Larson (Boulder, CO, USA), G. Smith (Albuquerque, NM, USA), D. Katzman (Albuquerque, NM, USA), G. R. Smith (Ann Arbor, MI, USA), T. Cerling (Salt Lake City, UT, USA), Yang Wang (Salt Lake City, UT, USA), R. G. Baker (Iowa City, IA, USA), K. C. Lohmann (Ann Arbor, MI, USA), C. A. Repenning (Denver, CO, USA), P. Patterson (Boulder, CO, USA) and G. Mackie (Guelph, Ont., Canada) ............................................................. 55 Paleoclimatic implications based on equilibrium-line altitude depressions of reconstructed Younger Dryas and Holocene cirque glaciers in inner Nord0ord, western Norway S. O. Dahl (Bergen, Norway) and A. Nesje (Bergen-Sandviken, Norway) ................................................................................ 87 Reconstruction of past lake levels and their relation to groundwater hydrology in the Parkers Prairie sandplain, west-central Minnesota G. Digerfeldt (Lurid, Sweden), J. E. Almendinger (Minneapolis, MN, USA) and S. Bj6rck (Lund, Sweden) ........................... 99 The ichnology of a submarine braided channel complex: the Whisky Bay Formation, Cretaceous of James Ross Island, Antarctica L. A. Buatois and A. O. Lopez Angriman (Tucam~in, Argentina) ............................................................................................. 119 Vegetation, sedimentary deposits and climates during the Late Pleistocene and Holocene in eastern Morocco L. Wengler and J.-L. Vernet (Montpellier, France) ..................................................................................................................... 141 Sequence stratigraphy and condensed pelagic sediments. An example from the Rosso Ammonitico Veronese, northeastern Italy L. Martire (Torino, Italy) ...........................................................................................................................................................169 lchnology of a glacially-influenced continental shelf and slope: the Late Cenozoic Gulf of Alaska (Yakataga Formation) N. Eyles (Scarborough, Ont., Canada), S. M. Vossler (Calgary, Alia., Canada) and M. B. Lagoe (Austin, TX, USA) ........... 193 A coupled environmental system formed at about 2.5 Ma in East Asia Ding Zhongli (Beijing, China), N. Rutter (Edmonton, Alta., Canada), Han Jingtai (Beijing, China) and Liu Tungsheng (Xian, China) ........................................................................................................................................................................................223 Mimosoideae (Leguminosae) occurrences in the Early Miocene of Patagonia (Argentina) V. D. Barreda and M. Caccavari (Buenos Aires, Argentina) ..................................................................................................... 243 "Blisters'" in a Famennian cyrtospiriferid brachiopod from Hunan (South China) D. Brice (Lille, France) and Hong-Fei Hou (Beijing, China) ..................................................................................................... 253 Migration and evolution patterns of floras and faunas in marine Early Cretaceous sediments of NW Europe J. Mutterlose (Hannover, Germany) ..........................................................................................................................................261 Community associations and structure in the Late Cretaceous vegetation of southeast Australasia and Antarctica R. L. Specht (St Lucia, Qld., Australia), M. E. Pettmann (St Lucia, Qld., Australia) and D. M. Jarzen (Ottawa, Canada) .... 283 Palaeoecology ~[' the Flora in Buntsandstein and Keuper in the Triassic g[' Middle Europe by D. Mader - - G. Roselt .................... 311 Paleokarst. A Systematic and Regional Review by P. Bosak et al. (Editors) - - S. Judson ............................................................... 31 I Catastrophic Episodes in Earth Histo O, by C. C. Albritton - - C. B. Officer .................................................................................... 313 Mesozoic and Cenozoic Plate Reconxtructions by C. R. Scotese and W. W. Sager (Editors) T.J. Hughes ................................. 314