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As many, but perhaps not all, will know, the Palaeontological Association is the UK's premier learned society for palaeontologists. In addition to publishing the journal Palaeontology, the 'PalAss' publishes a monograph and theme issue series titled Special Papers in Palaeontology. Two Special Papers are published each year and are available for purchase by the general public as well as through subscription to PalAss members. A full list of Special Papers titles is available at http://palass.org/pages/SpecialPapers.html Details of the last two volumes to appear in this series are listed below. Purchases can be made electronically at https://www.palass.org/catalog/ or by contacting: Dr Tim Palmer Executive Officer, Palaeontological Association Institute of Geography and Earth Studies University of Wales Aberystwyth, Dyfed SY23 3DB PalAss@aber.ac.uk The Palaeontological Association is a non-profit publisher. ---------- Zhan, Ren-Bin and Jin, Jisuo, 2005. Brachiopods from the Dashaba Formation (Middle Ordovician) of Sichuan Province, south-west China. Special Papers in Palaeontology 74: 1-63. ISBN 0 901702 98 6. Price £36 (US$72; €72; 50% discount to Palaeontological Association members). The Middle Ordovician Dashaba Formation in southern Sichuan Province, China, a 50-m-thick succession of calcareous and silty mudstones with calcareous nodules and limestone lenses, contains a rich, diverse, brachiopod fauna; 19 genera and 20 species are represented by 3018 specimens (1257 individuals). Four genera (Heteromena, Leptastichidia, Parisorthis and Pentagomena) and six species (Glyptonema? rugulosa, Heteronema dorsiconversa, Leptastichidia catatonosis, Parisorthis dischidanteris, Pentagomena parvicostellata and Triotechia chuannanensis) are new. Graptolites from the Dashaba Formation indicate the presence of four graptolite biozones: in ascending order, the uppermost part of the Undulograptus austrodentatus, the U. intersitus, the Didymograptus artus and the D. murchisoni biozones, which range from latest Arenig to Llanvirn in age. Despite the relatively homogeneous lithology, cluster analysis indicates that the brachiopod fauna of the Dashaba Formation can be divided into five associations: the Parisorthis dischidanteris, Saucrorthis obscura, Saucroorthis obscura-Parisorthis dischidanteris, Orthambonites delicata-Pentagomena parvicostellata and Calyptolepta chengkouensis associations. Faunal differentiation may have been the result of subtle changes in water depth (between BA2 and BA3 settings) and/or reflect the variable ratios in the supply of siliciclastic mud, quartz silt and carbonate mud. The variation in sediments would have affected the substrate softness and stability, which, in turn, probably controlled the distribution of fixosessile or librosessile brachiopods. ---------- Conodont biology and phylogeny: interpreting the fossil record Special Papers in Palaeontology No 73, 218 pp. ISBN 0 901702 97 8. £66 (£33 to Palaeontological Association members) Edited by Mark A. Purnell and Philip C. J. Donoghue Contents Preface. By Mark A. Purnell and Philip C. J. Donoghue Between death and data: biases in interpretation of the fossil record of conodonts. By Mark A. Purnell and Philip C. J. Donoghue Modes of growth in the euconodont oral skeleton: implications for bias and completeness in the fossil record. By Howard A. Armstrong An experimental investigation of post-depositional taphonomic bias in conodonts. By Peter H. von Bitter and Mark A. Purnell Biases in the recovery and interpretation of micropalaeontological data. By Lennart Jeppsson Multielement conodont apparatuses of Triassic Gondolelloidea. By Michael J. Orchard Silurian conodont biostratigraphy and palaeobiology in stratigraphic sequences. By James E. Barrick and Peep Männik Cambro-Ordovician sea-level fluctuations and sequence boundaries: the missing record and the evolution of new taxa. By Oliver Lehnert, James F. Miller, Steven A. Leslie, John E. Repetski and Raymond Ethington Graphical refinement of the conodont database: examples and plea. By Walter C. Sweet The likelihood of stratophenetic-based hypotheses of geological succession. By Peter D. Roopnarine The chronophyletic approach: stratophenetics facing an incomplete fossil record. By Jerzy Dzik Cladograms, phylogenies and the veracity of the conodont fossil record. By Linda M. Wickström and Philip C. J. Donoghue ___________________________________________________________________ Prof. Norman MacLeod Keeper of Palaeontology The Natural History Museum Cromwell Road, London, SW7 5BD (0)207 942-5204 (Office) (0)207 942-5546 (Fax) http://www.nhm.ac.uk/palaeontology/a&ss/nm/nm.html (Web Page) ___________________________________________________________________
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