Contents of Volume 61 Acta Palaeontologica Polonica 61 (4): 925– 928, 2016 Issue 1 (published March 2016) Editors’ choice Christian Klug, Kenneth De Baets, and Dieter Korn Exploring the limits of morphospace: Ontogeny and ecology of late Viséan ammonoids from the Tafilalt, Morocco . 1–14 Hirotsugu Mori, Patrick S. Druckenmiller, and Gregory M. Erickson A new Arctic hadrosaurid from the Prince Creek Formation (lower Maastrichtian) of northern Alaska . 15–32 Articles Steve Kershaw and Mari-Ann Mõtus Palaeoecology of corals and stromatoporoids in a late Silurian biostrome in Estonia . 33–50 Julien Denayer Rugose corals across the Devonian–Carboniferous boundary in NW Turkey . 51–70 Zhaoying Guan, Jakub Prokop, Patrick Roques, Jean Lapeyrie, and André Nel Revision of the enigmatic family Anthracoptilidae enlightens the evolution of Palaeozoic stem-dictyopterans . 71–87 Juanita Rodriguez, Cecilia Waichert, Carol D. Von Dohlen, George Poinar Jr., and James P. Pitts Eocene and not Cretaceous origin of spider wasps: Fossil evidence from amber . 89–96 Kimberly G. Beck, Rodrigo Soler-Gijón, Jesse R. Carlucci, and Ray E. Willis Morphology and histology of dorsal spines of the xenacanthid shark Orthacanthus platypternus from the Lower Permian of Texas, USA: Palaeobiological and palaeoenvironmental implications . 97–117 Emanuel Tschopp, Oliver Wings, Thomas Frauenfelder, and Bruce M. Rothschild Pathological phalanges in a camarasaurid sauropod dinosaur and implications on behaviour . 125–134 Michael Stein, Michael Archer, and Suzanne J. Hand Dwarfism and feeding behaviours in Oligo-Miocene crocodiles from Riversleigh, northwestern Queensland, Australia . 135–142 Philip J. Currie, Gregory F. Funston, and Halszka Osmólska New specimens of the crested theropod dinosaur Elmisaurus rarus from Mongolia . 143–157 Gregory F. Funston, Philip J. Currie, and Michael E. Burns New elmisaurine specimens from North America and their relationship to the Mongolian Elmisaurus rarus . 159–173 Estelle Bourdon, Cecile Mourer-Chauviré, and Yves Laurent Early Eocene birds from La Borie, southern France . 175–190 Leonardo Kerber, Francisco Ricardo Negri, Ana Maria Ribeiro, Maria Guiomar Vucetich, and Jonas Pereira de Souza-Filho Late Miocene potamarchine rodents from southwestern Amazonia, Brazil—with description of new taxa . 191–203 Adriana Oliver and Pablo Peláez-Campomanes Miocene evolution of the rodent Megacricetodon in Europe and its palaeobiogeographical implications . 211–219 Gabriele Sansalone, Tassos Kotsakis, and Paolo Piras New systematic insights about Plio-Pleistocene moles from Poland . 221–229 Kent Smith, Nicholas Czaplewski, and Richard L. Cifelli Middle Miocene carnivorans from the Monarch Mill Formation, Nevada . 231–252 Brief reports Pavel P. Skutschas A relict stem salamander: Evidence from the Early Cretaceous of Siberia . 519–123 Mikhail P. Tiunov, Fedor N. Golenishchev, and Leonid L. Voyta The first finding of Mimomys in the Russian Far East . 205–210 Discussions Anthony R. Fiorillo: Comment on “A new Arctic hadrosaurid from the Prince Creek Formation (lower Maastrichtian) of northern Alaska” by Hirotsugu Mori, Patrick S. Druckenmiller, and Gregory M. Erickson . 158 Hirotsugu Mori, Patrick S. Druckenmiller, and Gregory M. Erickson: Preservation of Arctic dinosaur remains from the Prince Creek Formation (Alaska, USA): A reply to Fiorillo (2016) . 174 926 ACTA PALAEONTOLOGICA POLONICA 61 (4), 2016 Issue 2 (published June 2016) Editors’ choice Thomas E. Guensburg, Daniel B. Blake, James Sprinkle, and Rich Mooi Crinoid ancestry without blastozoans . 253–266 Michael Laaß The origins of the cochlea and impedance matching hearing in synapsids . 267–280 Nirina O. Ratsimbaholison, Ryan N. Felice, and Patrick M. O’Connor Ontogenetic changes in the craniomandibular skeleton of the abelisaurid dinosaur Majungasaurus crenatissimus from the Late Cretaceous of Madagascar . 281–292 Articles Jorge Colmenar Ordovician rafinesquinine brachiopods from peri-Gondwana . 293–326 Daniele Scarponi, Giano Della Bella, Bruno Dell’Angelo, John Warren Huntley, and Maurizio Sosso Middle Miocene conoidean gastropods from western Ukraine (Paratethys): Integrative taxonomy, palaeoclimatogical, and palaeobiogeographical implications . 327–344 Maria Hołyńska, Leroy Leggitt, and Alexey A. Kotov Miocene cyclopid copepod from a saline paleolake in Mojave, California . 345–361 Louise Zylberberg, François J. Meunier, and Michel Laurin A microanatomical and histological study of the postcranial dermal skeleton of the Devonian actinopterygian Cheirolepis canadensis . 363–376 Téo Veiga de Oliveira and Cesar Leandro Schultz Functional morphology and biomechanics of the cynodont Trucidocynodon riograndensis from the Triassic of Southern Brazil: Pectoral girdle and forelimb . 377–386 Eugenio Sanz, Antonio Arcos, Carlos Pascual, and Ignacio Menendez Pidal Three-dimensional elasto-plastic soil modelling and analysis of sauropod tracks . 387–402 Alejandro Serrano-Martínez, Daniel Vidal, Lara Sciscio, Francisco Ortega, and Fabien Knoll Isolated theropod teeth from the Middle Jurassic of Niger and the early dental evolution of Spinosauridae . 403–415 Marcelo Stucchi, Rafael M. Varas-Malca, and Mario Urbina-Schmitt New Miocene sulid birds from Peru and considerations on their Neogene fossil record in the Eastern Pacific Ocean . 417–427 Fang-Yuan Mao, Yuan-Qing Wang, and Jin Meng New specimens of the multituberculate mammal Sphenopsalis from China: Implications for phylogeny and biology of taeniolabidoids . 429–454 Adriana M. Candela Analyzing the impact of conflictive dental characters on the phylogeny of octodontoid rodents . 455–468 Marius Robu Fossil population structure and mortality analysis of the cave bears from Urşilor Cave, north-western Romania . 469–476 In memoriam Adam T. Halamski and Andrzej Baliński: Gertruda Biernat (1923–2016) . 362 Book review Michał Zatoń: The natural history of parasites . 416 Issue 3 (published August 2016) Editors’ choice Nicholas J. Hogancamp, James E. Barrick, and Richard E. Strauss Geometric morphometric analysis and taxonomic revision of the Gzhelian (Late Pennsylvanian) conodont Idiognathodus simulator from North America . 477–502 Gregor Radtke, René Hoffmann, and Helmut Keupp Form and formation of flares and parabolae based on new observations of the internal shell structure in lytoceratid and perisphinctid ammonoids . 503–517 Articles George D. Koufos Hipparion macedonicum revisited: New data on evolution of hipparionine horses from the Late Miocene of Greece . 519–536 CONTENTS OF VOLUME 61 927 Asier Larramendi Shoulder height, body mass, and shape of proboscideans . 537–574 Martín R. Ciancio, Claudia Herrera, Alejandro Aramayo, Patricio Payrola, and Judith Babot Diversity of cingulate xenarthrans in the middle–late Eocene of Northwestern Argentina . 575–590 Frederik Spindler, Jocelyn Falconnet, and Jörg Fröbisch Callibrachion and Datheosaurus, two historical and previously mistaken basal caseasaurian synapsids from Europe . 597–616 Diego F. Muñoz and Juan L. Benedetto The eoorthid brachiopod Apheoorthina in the Lower Ordovician of NW Argentina and the dispersal pathways along western Gondwana . 633–644 Aleksandr A. Mironenko A new type of shell malformation caused by epizoans in Late Jurassic ammonites from Central Russia . 645–660 Thomas J. DeVries Fossil Cenozoic crassatelline bivalves from Peru: New species and generic insights . 661–688 Tobias B. Grun and James H. Nebelsick Taphonomy of a clypeasteroid echinoid using a new quasimetric approach . 689–699 Brief reports Paul M. Barrett, Joane Pouech, Jean-Michel Mazin, and Fiona M. Jones Teeth of embryonic or hatchling sauropods from the Berriasian (Early Cretaceous) of Cherves-de-Cognac, France . 591–596 David A. Legg A new marrellid arthropod from the Ordovician of Wales . 617–619 Rossana Sanfilippo, Agatino Reitano, Gianni Insacco, and Antonietta Rosso A new tubeworm of possible serpulid affinity from the Permian of Sicily . 621–626 Olev Vinn, Carolina Zabini, Gustavo Sene-Silva, Kalle Kirsimäe, and Lara Susan-Marcos Possible polychaete tubeworms from the Late Emsian (Early Devonian) of the Parana Basin, Brazil . 627–632 Book review Frank Wiese: Ammonoid Paleobiology 2.0—fresh views, new concepts, advanced methods . 620 Issue 4 (published December 2016) Editors’ choice Michael O. Day, Bruce S. Rubidge, and Fernando Abdala A new mid-Permian burnetiamorph therapsid from the Main Karoo Basin of South Africa and a phylogenetic review of Burnetiamorpha . 701–719 Sylvain Rigaud and Joachim Blau New robertinid foraminifers from the Early Jurassic of Adnet, Austria and their evolutionary importance . 721–734 Articles D. Brent Jones and Larisa R.G. DeSantis Dietary ecology of the extinct cave bear: Evidence of omnivory as inferred from dental microwear textures . 735–741 Elver Luiz Mayer, Alex Hubbe, Leonardo Kerber, Paulo Miguel Haddad-Martim, and Walter Neves Taxonomic, biogeographic, and taphonomic reassessment of a large extinct species of paca from the Quaternary of Brazil . 743–758 Qian Li, Yuan-Qing Wang, and Łucja Fostowicz-Frelik Small mammal fauna from Wulanhuxiu (Nei Mongol, China) implies the Irdinmanhan–Sharamurunian (Eocene) faunal turnover . 759–776 Julien Benoit, Fernando Abdala, Paul R. Manger, and Bruce S. Rubidge The sixth sense in mammalian forerunners: Variability of the parietal foramen and the evolution of the pineal eye in South African Permo-Triassic eutheriodont therapsids . 777–789 Daniel Tyborowski A new ophthalmosaurid ichthyosaur from the Late Jurassic of Owadów-Brzezinki Quarry, Poland . 791–803 Jerzy Dzik and Tomasz Sulej An early Late Triassic long-necked reptile with a bony pectoral shield and gracile appendages . 805–823 Mikhail V. Nazarkin Cenozoic fossil fishes of the extinct.