Contents of Volume 53 Acta Palaeontologica Polonica 53 (4): 750– 752, 2008 Issue 1 (published February 2008) Rajendra S. Rana, Kishor Kumar, Gilles Escarguel, Ashok Sahni, Kenneth D. Rose, Thierry Smith, Hukam Singh, and Lachham Singh An ailuravine rodent from the lower Eocene Cambay Formation at Vastan, western India, and its palaeobiogeographic implications. 1–14 Paul C. Sereno and Stephen L. Brusatte Basal abelisaurid and carcharodontosaurid theropods from the Lower Cretaceous Elrhaz Formation of Niger . 15–46 Pascal Godefroit, Hai Shulin, Yu Tingxiang, and Pascaline Lauters New hadrosaurid dinosaurs from the uppermost Cretaceous of northeastern China. 47–74 Ross Damiani A giant skull of the temnospondyl Xenotosuchus africanus from the Middle Triassic of South Africa and its ontogenetic implications . 75–84 Vachik Hairapetian, Henning Blom, and C. Giles Miller Silurian thelodonts from the Niur Formation, central Iran . 85–95 Andrzej Kaim, Yoshitsugu Kobayashi, Hiroki Echizenya, Robert G. Jenkins, and Kazushige Tanabe Chemosynthesis−based associations on Cretaceous plesiosaurid carcasses. 97–104 Anna Kozłowska and Denis E.B. Bates Kirkigraptus, a new retiolitid graptolite from Poland . 105–112 Takao Ubukata, Kazushige Tanabe, Yasunari Shigeta, Haruyoshi Maeda, and Royal H. Mapes Piggyback whorls: A new theoretical morphologic model reveals constructional linkages among morphological characters in ammonoids. 113–128 Peter Vršanský New blattarians and a review of dictyopteran assemblages from the Lower Cretaceous of Mongolia. 129–136 Simon Conway Morris and John S. Peel The earliest annelids: Lower Cambrian polychaetes from the Sirius Passet Lagerstätte, Peary Land, North Greenland. 137–148 Lydia Beuck, Max Wisshak, Axel Munnecke, and André Freiwald A giant boring in a Silurian stromatoporoid analysed by computer tomography . 149–160 Brief reports Kuiyan Zhang, Ding Yang, Dong Ren, and Fengchen Ge New Middle Jurassic tangle−veined flies from Inner Mongolia, China . 161–164 Andre Nel, Didier Neraudeau, Vincent Perrichot, Vincent Girard, and Bernard Gomez A new dragonfly family from the Upper Cretaceous of France. 165–168 Issue 2 (published June 2008) William W. Korth Cranial morphology, systematics and succession of beavers from the middle Miocene Valentine Formation of Nebraska, USA . 169–182 Hai−Lu You, Kyo Tanoue, and Peter Dodson New data on cranial anatomy of the ceratopsian dinosaur Psittacosaurus major . 183–196 Jesper Milàn, David B. Loope, and Richard G. Bromley Crouching theropod and Navahopus sauropodomorph tracks from the Early Jurassic Navajo Sandstone of USA . 197–205 Samuel Zamora and Andrew B. Smith A new Middle Cambrian stem−group echinoderm from Spain: Palaeobiological implications of a highly asymmetric cinctan . 207–220 Jisuo Jin and Leonid E. Popov A new genus of Late Ordovician–Early Silurian pentameride brachiopod and its phylogenetic relationships . 221–236 CONTENTS OF VOLUME 53 751 Kazem Seyed−Emami, Franz T. Fürsich, Markus Wilmsen, Mahmoud R. Majidifard, and Ali Shekarifard Lower and Middle Jurassic ammonoids of the Shemshak Group in Alborz, Iran and their palaeobiogeographical and biostratigraphical importance. 237–260 Stéphane Reboulet and Anthony Rard Double alignments of ammonoid aptychi from the Lower Cretaceous of Southeast France: Result of a post−mortem transport or bromalites? . 261–274 Yutaro Suzuki, Akiyoshi Kondo, and Jan Bergström Morphological requirements in limulid and decapod gills: A case study in deducing the function of lamellipedian exopod lamellae . 275–283 Jianni Liu, Degan Shu, Jian Han, Zhifei Zhang, and Xingliang Zhang The lobopod Onychodictyon from the Lower Cambrian Chengjiang Lagerstätte revisited . 285–292 Olof Sandström and Steve Kershaw Palaeobiology, ecology, and distribution of stromatoporoid faunas in biostromes of the mid−Ludlow of Gotland, Sweden. 293–302 György Less and Ercan Özcan The late Eocene evolution of nummulitid foraminifer Spiroclypeus in the Western Tethys. 303–316 György Less, Ercan Özcan, Cesare A. Papazzoni, and Rudolf Stockar The middle to late Eocene evolution of nummulitid foraminifer Heterostegina in the Western Tethys . 317–350 Brief report Ignacio A. Cerda Gastroliths in an ornithopod dinosaur. 351–355 In memoriam Magdalena Borsuk−Białynicka and Teresa Maryańska: Halszka Osmólska (1930–2008) . 206 Mieczysław Wolsan: Ewa Barycka (1979–2008) . 284 Editorial note: Quotation of Russian references . 356 Issue 3 (published September 2008) Pieter Missiaen and Thierry Smith The Gashatan (late Paleocene) mammal fauna from Subeng, Inner Mongolia, China . 357–378 Nao Kusuhashi Early Cretaceous multituberculate mammals from the Kuwajima Formation (Tetori Group), central Japan. 379–390 Jean−Claude Rage, Annelise Folie, Rajendra S. Rana, Hukam Singh, Kenneth D. Rose, and Thierry Smith A diverse snake fauna from the early Eocene of Vastan Lignite Mine, Gujarat, India . 391–403 Tai Kubo In quest of the Pteraichnus trackmaker: Comparisons to modern crocodilians . 405–412 David Marjanović and Michel Laurin Assessing confidence intervals for stratigraphic ranges of higher taxa: The case of Lissamphibia . 413–432 Sylvain Adnet and Henri Cappetta New fossil triakid sharks from the Eocene of Prémontré, France and comments on fossil record of the family . 433–448 Alfred C. Lenz and Michael J. Melchin Convergent evolution of two Silurian graptolites. 449–460 Martin Stein, Dieter Waloszek, Andreas Maas, Joachim T. Haug, and Klaus J. Müller The stem crustacean Oelandocaris oelandica re−visited . 461–484 Yuanlin Sun and Andrzej Baliński Silicified Mississippian brachiopods from Muhua, southern China: Lingulids, craniids, strophomenids, productids, orthotetids, and orthids . 485–524 Steffen Kiel, Kazutaka Amano, and Robert G. Jenkins Bivalves from Cretaceous cold−seep deposits on Hokkaido, Japan . 525–537 http://app.pan.pl/acta53/app53−750.pdf 752 ACTA PALAEONTOLOGICA POLONICA 53 (4), 2008 Brief report Karen J. Lloyd and Jaelyn J. Eberle A new talpid from the late Eocene of North America . 539–543 Editorial notes Quotation of Russian references . 404 Changes in manuscript submission . 544 Issue 4 (published December 2008) Jørn H. Hurum and Zofia Kielan−Jaworowska Postcranial skeleton of a Cretaceous multituberculate mammal Catopsbaatar. 545–566 David J. Varricchio, Paul C. Sereno, Zhao Xijin, Tan Lin, Jeffery A. Wilson, and Gabrielle H. Lyon Mud−trapped herd captures evidence of distinctive dinosaur sociality . 567–578 Marcello Ruta and John R. Bolt The brachyopoid Hadrokkosaurus bradyi from the early Middle Triassic of Arizona, and a phylogenetic analysis of lower jaw characters in temnospondyl amphibians . 579–592 Jorge Ignacio Noriega and Gerardo Cladera First record of an extinct marabou stork in the Neogene of South America . 593–600 Vladimir B. Sukhanov, Igor G. Danilov, and Elena V. Syromyatnikova The description and phylogenetic position of a new nanhsiungchelyid turtle from the Late Cretaceous of Mongolia . 601–614 Gennady M. Dlussky, Torsten Wappler, and Sonja Wedmann New middle Eocene formicid species from Germany and the evolution of weaver ants . 615–626 Torsten Wappler and Yair Ben−Dov Preservation of armoured scale insects on angiosperm leaves from the Eocene of Germany. 627–634 Jean−Georges Casier and Ewa Olempska Early Frasnian ostracods from the Arche quarry (Dinant Synclinorium, Belgium) and the Palmatolepis punctata Isotopic Event . 635–646 María Eugenia Dies Álvarez, Rodolfo Gozalo, Peter Cederström, and Per Ahlberg Bradoriid arthropods from the lower–middle Cambrian of Scania, Sweden. 647–656 Sabrina C. Rodrigues, Marcello G. Simões, Michał Kowalewski, Mônica A.V. Petti, Edmundo F. Nonato, Sergio Martinez, and Claudia Julia Del Rio Biotic interaction between spionid polychaetes and bouchardiid brachiopods: Paleoecological, taphonomic and evolutionary implication . 657–668 Martin Košťák and Frank Wiese Lower Turonian record of belemnite Praeactinocamax from NW Siberia and its palaeogeographic significance . 669–678 Steffen Kiel, Kathleen A. Campbell, William P. Elder, and Crispin T.S. Little Jurassic and Cretaceous gastropods from hydrocarbon seeps in forearc basin and accretionary prism settings, California. ..