Just out @ Historical Biology What happens to dead birds left in a cave and its vicinity for a quarter of a century? A taphonomic experiment Author(s) Zbigniew M. Bochenski, Krzysztof Wertz & Teresa Tomek Abstract: This paper describes a bird carcass-monitoring experiment carried out in a limestone cave and its immediate vicinity in southern Poland for almost a quarter of a century. Some specimens deposited outside the cave were preserved
Just out @ Nature Scientific Reports Synchrotron phase-contrast microtomography of coprolites generates novel palaeobiological data Author(s) Martin Qvarnström, Grzegorz Niedźwiedzki, Paul Tafforeau, Živil Žigaitė & Per E. Ahlberg Abstract: Coprolites (fossil faeces) reveal clues to ancient trophic relations, and contain inclusions representing organisms that are rarely preserved elsewhere. However, much information is lost by classical techniques of investigation, which cannot find and image the inclusions in an adequate manner. We demonstrate
Just out @ PeerJ Evolution of developmental sequences in lepidosaurs Author(s) Tomasz Skawiński, Bartosz Borczyk Abstract: Background Lepidosaurs, a group including rhynchocephalians and squamates, are one of the major clades of extant vertebrates. Although there has been extensive phylogenetic work on this clade, its interrelationships are a matter of debate. Morphological and molecular data suggest very different relationships within squamates. Despite this, relatively few studies have assessed the utility of
Just out @ Royal Society Open Science Homeotic shift at the dawn of the turtle evolution Author(s) Tomasz Szczygielski Abstract: All derived turtles are characterized by one of the strongest reductions of the dorsal elements among Amniota, and have only 10 dorsal and eight cervical vertebrae. I demonstrate that the Late Triassic turtles, which represent successive stages of the shell evolution, indicate that the shift of the boundary between the
Just out @ Neues Jahrbuch für Geologie und Paläontologie Upper Triassic freshwater oncoids from Silesia (southern Poland) and their microfossil biota Author(s) Tałanda, Mateusz; Bajdek, Piotr; Niedźwiedzki, Grzegorz; Sulej, Tomasz Abstract: Oncoids are rare components of Keuper sediments across Europe. The exceptions are localities linked to the Upper Triassic “Woźniki Limestone” (formally Limestone Member from Woźniki) in Silesia, southern Poland. Numerous oncoids occur in breccia-like deposits in the Lipie Śląskie clay-pit at Lisowice.
Just out @ The Science of Nature The first direct evidence of a Late Devonian coelacanth fish feeding on conodont animals Author(s) Michał Zatoń, Krzysztof Broda, Martin Qvarnström, Grzegorz Niedźwiedzki, Per Erik Ahlberg Abstract: We describe the first known occurrence of a Devonian coelacanth specimen from the lower Famennian of the Holy Cross Mountains, Poland, with a conodont element preserved in its digestive tract. A small spiral and phosphatic coprolite (fossil
Just out @ The Science of Nature Unusual intraosseous fossilized soft tissues from the Middle Triassic Nothosaurus bone Author(s) Dawid Surmik, Bruce M. Rothschild, Roman Pawlicki Abstract: Fossilized soft tissues, occasionally found together with skeletal remains, provide insights to the physiology and functional morphology of extinct organisms. Herein, we present unusual fossilized structures from the cortical region of bone identified in isolated skeletal remains of Middle Triassic nothosaurs from Upper Silesia,
Just out @ PeerJ Title: Halkieriid-like animals in the Late Ordovician? Author(s) Dawid Mazurek Abstract: The recent description of the Tremadocian halkieriid-like stem aculiferan, Calvapilosa kroegeri, could shed new light on some enigmatic Ordovician fossils known only by their disarticulated plates. Specifically, Conchopeltis alternata could be interpreted as a plate of sclerite-bearing stem aculiferan. Comparison is based on a similarity of conchs and reinterpretation of Conchopeltis tentacles as sclerites. This
Just out @ Palaeogeography, Palaeoclimatology, Palaeoecology Title: Rich fen development in CE Europe, resilience to climate change and human impact over the last ca. 3500 years Author(s): Mariusz Gałka, Liene Aunina, Angelica Feurdean, Simon Hutchinson, Piotr Kołaczek, Karina Apolinarska Abstract: Here, for the first time in SE Poland, we document the long-term development of a rich fen and assess its sensitivity to climate change and human impacts over the last ca.