Jurassic

Just out | The comparative osteology of Plesiochelys bigleri n. sp., a new coastal marine turtle from the Late Jurassic of Porrentruy (Switzerland) @ PeerJ

Just out @ PeerJ The comparative osteology of Plesiochelys bigleri n. sp., a new coastal marine turtle from the Late Jurassic of Porrentruy (Switzerland) Author(s) Christian Püntener, Jérémy Anquetin, Jean-Paul Billon-Bruyat Abstract: Background During the Late Jurassic, several groups of eucryptodiran turtles inhabited the shallow epicontinental seas of Western Europe. Plesiochelyidae are an important part of this first radiation of crown-group turtles into coastal marine ecosystems. Fossils of Plesiochelyidae occur in many European localities, and are especially abundant

Just out | Ademosynidae (Insecta: Coleoptera): A new concept for a coleopteran key taxon and its phylogenetic affinities to the extant suborders @ Palaeontologia Electronica

Just out @ Palaeontologia Electronica Ademosynidae (Insecta: Coleoptera): A new concept for a coleopteran key taxon and its phylogenetic affinities to the extant suborders Author(s) Evgeny V. Yan, Rolf G. Beutel, and Alexander G. Ponomarenko Abstract: †Ademosynidae is a controversial extinct family of Coleoptera, first discovered in Australian Upper-Triassic deposits. The last known representative is known from the Early Jurassic of Kirghizstan. Type material from the collection of Moscow Paleontological Institute

Just out | A revision of some British Lower Bajocian stephanoceratid ammonites @ Proceedings of the Geologists' Association

Just out @ Proceedings of the Geologists’ Association A revision of some British Lower Bajocian stephanoceratid ammonites Author(s) Robert B. Chandler, Volker Dietze, John Whicher Abstract: Members of the ammonite family Stephanoceratidae from the Middle Jurassic, Lower Bajocian, Laeviuscula to Humphriesianum zones of South West England are revised. These comprise faunas resulting from periodic migrations and possibly hybridization. The taxonomic positions of TelocerasMascke, 1907, Kumatostephanus Buckman, 1922, Gibbistephanus Buckman, 1928 and Pseudoteloceras Pavia and Fernández-López, 2016 are considered in the

On the News | USA | MSU research resets timeline for evolution of complex life forms in North America @ Montana State University

On the News @ Montana State University Title:  MSU research resets timeline for evolution of complex life forms in North America Skip Anderson Excerpt: “A Montana State University doctoral graduate discovered fossilized microorganisms in western Montana that predate by 200 million years fossils previously believed to be the oldest complex life forms in North America. Zach Adam’s research of the fossilized remains of a eukaryote called Tappania shows that Earth’s first complex life

Just out |  Enigmatic didactyl tracks from the Jurassic of Iran @ Historical Biology

Just out @ Historical Biology Enigmatic didactyl tracks from the Jurassic of Iran Author(s) Lida Xing, Nasrollah Abbassi & Martin G. Lockley Abstract: Didactyl tracks of theropod affinity are reported in this study based on a small sample of footprints in sandstones within the Middle Jurassic (Aalenian-Bajocian) Dansirit Formation in the Baladeh area, Alborz Mountains, Iran. These tracks superficially resemble footprints attributed to small deinonychosaurian dinosaurs known mainly from the Cretaceous of Asia. The

Just out | The tracks of giant theropods (Jurabrontes curtedulensis ichnogen. & ichnosp. nov.) from the Late Jurassic of NW Switzerland: palaeoecological & palaeogeographical implications @ Historical Biology

Just out @ Historical Biology The tracks of giant theropods (Jurabrontes curtedulensis ichnogen. & ichnosp. nov.) from the Late Jurassic of NW Switzerland: palaeoecological & palaeogeographical implications Author(s) Daniel Marty, Matteo Belvedere, Novella L. Razzolini, Martin G. Lockley, Géraldine Paratte, Marielle Cattin, Christel Lovis & Christian A. Meyer Abstract: Jurabrontes curtedulensis, a new ichnogenus and species of Late Jurassic giant theropod dinosaur track is described based on very well-preserved and morphologically-distinct tracks, all carefully excavated along federal highway A16 (Canton

Just out | An enigmatic hawker dragonfly from the Middle Jurassic of China (Odonata, Aeshnoptera) @ PalZ

Just out @ PalZ An enigmatic hawker dragonfly from the Middle Jurassic of China (Odonata, Aeshnoptera) Author(s) Di-ying Huang, André Nel, Chenyang Cai Abstract: The aeshnopteran Propecymatophlebia magnifica gen. et sp. nov. is described from the Middle Jurassic Hiafanggou Formation of Inner Mongolia in China, on the basis of a complete forewing. It confirms the remarkable palaeodiversity of the stem group of the hawker dragonflies in Central Asia in the period between the Middle Jurassic and

Just out | Lower Jurassic palynostratigraphy of Eastern Siberia @ Stratigraphy and Geological Correlation

Just out @ Stratigraphy and Geological Correlation Lower Jurassic palynostratigraphy of Eastern Siberia Author(s) A. A. Goryacheva Abstract: This paper presents the results of a palynological study of the natural outcrops of the Lower and Middle Jurassic on the Kelimyar River (Outcrops 5, 6, 7, 14, and 16) and two boreholes, Middle-Nakynskaya and Ygyata-Tyungskaya 1, in Eastern Siberia. The Ukugut, Tyung, Motorchuna, Suntar, Kyrin, and Kelimyar formations were studied. Six biostrata with dinocysts

Just out | Upper Jurassic sauropod record in the Lusitanian Basin (Portugal): Geographical and lithostratigraphical distribution @ Palaeontologia Electronica

Just out @ Palaeontologia Electronica Upper Jurassic sauropod record in the Lusitanian Basin (Portugal): Geographical and lithostratigraphical distribution Author(s) Pedro Mocho, Rafael Royo-Torres, Fernando Escaso, Elisabete Malafaia, Carlos de Miguel Chaves, Iván Narváez, Adán Pérez-García, Nuno Pimentel, Bruno C. Silva, and Francisco Ortega Abstract: Sauropod remains are relatively abundant in the Upper Jurassic sediments of the Lusitanian Basin. These dinosaurs are recorded in several sub-basins formed during the third rifting episode

Just out | Facies stacking and extinctions across the Triassic–Jurassic boundary in a peritidal succession from western Sicily @ Facies

Just out @ Facies Facies stacking and extinctions across the Triassic–Jurassic boundary in a peritidal succession from western Sicily Author(s) S. Todaro, P. Di Stefano, G. Zarcone, V. Randazzo Abstract: An uppermost Triassic–lowermost Jurassic carbonate platform succession, which is 430 m thick, in northwestern Sicily is described with the aim to provide new data on the sedimentological and biological variations across the Triassic–Jurassic boundary in peritidal environments. The studied succession belonged to the rimmed carbonate shelf