98%
921
2 minutes
20
The taxonomy of the soft-shell turtle (Liebus, 1930), family Trionychidae, subfamily Trionychinae, is revised based on new and previously mentioned material (including the type material) from the Early Miocene (Burdigalian, MN 3) sites of the Most Basin, Czechia. Given that the diagnosis was so far based only on plastral elements, here we focused on the cranial material and combined our study with previously published data on postcranial elements. 3D models of the skulls derived from CT scans allow us to provide the first complete skull description of , including several new cranial diagnostic characters of the species. Our results not only enable the distinction of the trionychid genera and , both recorded from Central Europe during the Early Miocene, but further allow us to provide an emended diagnosis for . . We confirm the conclusions of a previous study according to which , . , . , and . are . from Břešt'any (MN 3) represents the oldest record of this genus in Europe as well as the oldest occurrence of the genus.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10387236 | PMC |
http://dx.doi.org/10.7717/peerj.15658 | DOI Listing |
Zool Res
September 2025
Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China. E-mail:
The collision of the Indian and Eurasian plates during the Eocene represents a major tectonic shift that significantly altered biotic dynamics and promoted species diversification across the Oriental region. To explain the diversification of taxa from the Indian subcontinent into Southeast Asia, two principal hypotheses have been proposed: the "Biotic-ferry" and "Step-stone" models. The subfamily Perittopinae, a lineage of semi-aquatic bugs comprising a single genus and 20 extant species, provides an ideal system for testing these hypotheses due to its disjunct distribution spanning the Indian subcontinent and Southeast Asia.
View Article and Find Full Text PDFSci Bull (Beijing)
August 2025
Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China.
The northeastern (NE) Tibetan Plateau is extruding eastward at a rapid rate (∼15 mm a), but the role of the upper mantle in this process remains unclear. Early-Miocene primary melilitites from the leading edge of the extruding plateau provide critical insights into the upper mantle dynamics. Geochemical and Sr-Nd-Pb-Os isotopic data, supported by experimental melt comparisons, reveal that these melilitites originate from a hybrid source of CO-bearing mantle source, probably dominated by peridotite and pyroxenite/wehrlite lithologies.
View Article and Find Full Text PDFProc Biol Sci
September 2025
Zentralmagazin Naturwissenschaftlicher Sammlungen, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
Mammals often follow peculiar evolutionary trajectories on islands, with some Pleistocene insular large mammals exhibiting reduced relative brain size. However, the antiquity of this phenomenon remains unclear. Here, we report the first digital endocast of an insular artiodactyl, the five-horned ruminant from the Late Miocene Gargano palaeo-island (Apulia, Italy).
View Article and Find Full Text PDFMol Phylogenet Evol
December 2025
School of Ecology and Environment, Inner Mongolia University, Hohhot 010020, China; Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau, Hohhot 010020, China. Electronic address:
Understanding the evolutionary history of the Eurasian steppe is crucial for restoring severely degraded ecosystems and mitigating the impact of future climate change. Stipa species, which demonstrate zonal and extrazonal distribution patterns across the eastern Eurasian steppe, serve as a noteworthy example for elucidating the evolution of this biome. In this paper, we explored the phylogeny of the genus Stipa using transcriptome data, while examined the genetic differentiation, demographic history, and adaptive evolution of S.
View Article and Find Full Text PDFPlants (Basel)
August 2025
Department of Biology and Biotechnologies "Charles Darwin", Sapienza Rome University, 00185 Rome, Italy.
Arecaceae (palms) constitute a highly diversified family of monocots, distributed especially in tropical and subtropical areas, including approximately 2600 species and 180 genera. Palms originated by the end of the Early Cretaceous, with most genus-level cladogenetic events occurring from the Eocene and Oligocene onward. Meligethinae (pollen beetles) are a large subfamily of Nitidulidae (Coleoptera), including just under 700 described species, and some 50 genera.
View Article and Find Full Text PDF