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Prehatch Calls and Coordinated Birth in Turtles.
Ecol Evol
October 2024
Wildlife Conservation Society - WCS Brasil Manaus Amazonas Brazil.
Hatching synchronisation is widespread in oviparous taxa. It has been demonstrated that many species use sounds to coordinate synchronous hatching, being widespread among archosaurs (birds and crocodilians). Recent studies have shown that some turtle species produce vocalisations from within the egg, but the role of this behaviour in synchronising hatch is untested.
View Article and Find Full Text PDFShell biomechanics suggests an aquatic palaeoecology at the dawn of turtle evolution.
Sci Rep
September 2024
Institute of Paleobiology, Polish Academy of Sciences PL, Twarda 51/55, 00-818, Warsaw, Poland.
The turtle shell is a remarkable structure that has intrigued not only evolutionary biologists but also engineering and material scientists because of its multi-scale complexity and various functions. Although protection is its most apparent role, the carapace and plastron are also related to many physiological functions and their shape influences hydrodynamics and self-righting ability. As such, analysing the functional morphology of the shell could help understanding the ecology of Triassic stem-turtles, which will contribute to the century-long debate on the evolutionary origins of turtles.
View Article and Find Full Text PDFNew insights into the early morphological evolution of sea turtles by re-investigation of , a three-dimensionally preserved fossil stem chelonioid from the Campanian of Alberta, Canada.
Swiss J Palaeontol
July 2024
Department of Geosciences, University of Fribourg, Chemin du Musée 6, 1700 Fribourg, Switzerland.
Unlabelled: The early evolution of Pan-Chelonioidea (sea turtles) is poorly understood. This is in part due to the rarity of undeformed skulls of definitive early stem chelonioids. In this work, we redescribe the holotype of using µCT scans and segmentations of the skull.
View Article and Find Full Text PDFCorrection: 'The latest freshwater giants: a new (Pleurodira: Podocnemididae) turtle from the Late Pleistocene of the Brazilian Amazon' (2024), by Ferreira .
Biol Lett
June 2024
Departamento de Biologia, Universidade de São Paulo , Ribeirão Preto, Brazil.
Saurodesmus robertsoni Seeley 1891-The oldest Scottish cynodont.
PLoS One
May 2024
Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Warsaw, Poland.
Predating Darwin's theory of evolution, the holotype of Saurodesmus robertsoni is a long-standing enigma. Found at the beginning of 1840s, the specimen is a damaged stylopodial bone over decades variably assigned to turtles, archosaurs, parareptiles, or synapsids, and currently nearly forgotten. We redescribe and re-assess that curious specimen as a femur and consider Saurodesmus robertsoni as a valid taxon of a derived cynodont (?Tritylodontidae).
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