Osteocytes play a central role in bone metabolism in extant vertebrates, but their evolutionary history is poorly understood. Therefore osteocyte lacunae microstructure of fossil bone was studied on the nanometer scale by means of focused ion beam tomography (FIB). A osteostracan and a “placoderm” were imaged, the earliest groups with cellular bone, and secondary osteons respectively. To visualize and characterize the early bone composition via the morphology and distribution of osteocyte lacunae, thereby imaging the...
Data from: Taxonomy in the phylogenomic era: Species boundaries and phylogenetic relationships among North American ants of the Crematogaster scutellaris groupPhilip Ward & Bonnie Blaimer
We investigate the species-level taxonomy and evolutionary history of Nearctic ants in the Crematogaster scutellaris group (Hymenoptera: Formicidae), drawing on evidence from morphology and UCE (ultraconserved element) phylogenomics. The New World species in this group form a well supported clade that originated in the late Miocene (~7.3 Ma) and subsequently diverged into three major lineages: the coarctata clade (southwest Nearctic), the opaca clade (southwest Nearctic and northern Neotropics), and the lineolata clade (eastern Nearctic and...
Data from: Machine learning identifies ecological selectivity patterns across the end-Permian mass extinctionWilliam Foster, Georgy Ayzel, Jannes Münchmeyer, Tabea Rettelbach, Niklas Kitzmann, Terry Isson, Maria Mutti & Martin Aberhan
The end-Permian mass extinction occurred alongside a large swathe of environmental changes that are often invoked as extinction mechanisms, even when a direct link is lacking. One way to elucidate the cause(s) of a mass extinction is to investigate extinction selectivity as it can reveal critical information on organismic traits as key determinants of extinction and survival. Here we show that machine learning algorithms, specifically gradient boosted decision trees, can be used to identify determinants...
Data from: The Sulawesi Thrush (Cataponera turdoides; Aves: Passeriformes) belongs to the genus TurdusAndrew Hart Reeve, Mozes P. K. Blom, Petter Zahl Marki, Romina Batista, Urban Olsson, Veronica Nyström Edmark, Martin Irestedt & Knud Andreas Jønsson
The Asian and Australo-Papuan faunas meet and intermix across the islands of Wallacea. Untangling the origins and relationships of the species inhabiting these archipelagos is an ongoing project that has lasted for well over a century. In recent years, molecular phylogenetic studies have made considerable progress in clarifying the affinities of enigmatic Wallacean taxa; but taxonomic riddles remain, even in groups as well studied as birds. Such is the case with Sulawesi Thrush Cataponera turdoides,...
Spatial phylogenomics of acrobat ants in Madagascar—mountains function as cradles for recent diversity and endemismGabriela P. Camacho, Ana Carolina Loss, Brian L. Fisher & Bonnie B. Blaimer
Aim: A crucial step to protecting biodiversity is assessing species diversity and endemism. We delineate spatial patterns of diversity in Malagasy ants on a phylogenetic and taxonomic level to identify centers of diversity and endemism, and evaluate the ‘museum vs cradle’ hypothesis with regard to ant endemism. Location: Madagascar Taxon: Ants, genus Crematogaster. Methods: We estimated distribution models for 33 Crematogaster species and generated a phylogeny based on ultraconserved elements. We calculated species richness (SR),...
Aim: In the Mediterranean Biodiversity Hotspot freshwater fishes are key biogeographical indicators while their habitats are vulnerable to ongoing anthropogenic pressures. The freshwater blenny is a widespread endemic taxon in this area. However, our understanding of the overall diversity of specific populations and their phylogenetic relationships is sparse. Thus, we aim to investigate the genetic diversity, infer relationships among sampled populations related to major paleoenvironmental changes and suggest insights for future research and conservation targets....
Museum für Naturkunde11
Meise Botanic Garden5
Natural History Museum5
Botanischer Garten und Botanisches Museum Berlin4
University of Lisbon4
Finnish Museum of Natural History4
University of Tartu4
Naturalis Biodiversity Center4
Royal Botanic Garden Edinburgh3
Senckenberg Nature Research Society2