A5024600956- Evolution and Paleontology Studies
- Morphological variations and asymmetry
- Pleistocene-Era Hominins and Archaeology
- Paleontology and Evolutionary Biology
- Bat Biology and Ecology Studies
- Wildlife Ecology and Conservation
- Forensic Anthropology and Bioarchaeology Studies
- Hip disorders and treatments
- Avian ecology and behavior
- Primate Behavior and Ecology
- Mitochondrial Function and Pathology
- Animal Ecology and Behavior Studies
- Adipose Tissue and Metabolism
- Optical measurement and interference techniques
- Marine animal studies overview
- Bone and Joint Diseases
- Ecology and biodiversity studies
- Physiological and biochemical adaptations
- Ichthyology and Marine Biology
- Hand Gesture Recognition Systems
- Orthopaedic implants and arthroplasty
- Marine and environmental studies
- Amphibian and Reptile Biology
- Cellular Mechanics and Interactions
- Advanced Image Processing Techniques
Ludwig-Maximilians-Universität München
2018-2023
Bavarian State Collection of Zoology
2016-2023
Bavarian Natural History Collections
2017-2023
University of New England
2021
Centre National de la Recherche Scientifique
2021
Musée de l'Homme
2021
University of Bonn
2015-2016
University of Roehampton
2011-2015
Histoire Naturelle de l’Homme Préhistorique
2013
A profound understanding of the influence trackmaker anatomy, foot movements and substrate properties is crucial for any interpretation fossil tracks. In this case study we analyze variability footprint shape within one large theropod (T3), medium-sized (T2) ornithopod (I1) trackway from Lower Cretaceous Münchehagen (Lower Saxony, Germany) in order to determine informativeness individual features measurements ichnotaxonomy, identification, discrimination between left right footprints....
Bone structure has a crucial role in the functional adaptations that allow vertebrates to conduct their diverse lifestyles. Much been documented regarding diaphyseal of long bones tetrapods. However, architecture trabecular bone, which is for instance found within epiphyses bones, and shown experimentally be extremely plastic, received little attention context lifestyle (virtually only primates). We therefore investigated forelimb extant xenarthrans, placental mammals including sloths,...
Sloths are one of only two exceptions to the mammalian 'rule seven' vertebrae in neck. As a striking case breaking evolutionary constraint, explanation for exceptional number cervical sloths is still under debate. Two diverging hypotheses, both ultimately linked low metabolic rate sloths, have been proposed: hypothesis 1 involves morphological transformation due changes Hox gene expression pattern and 2 assumes that not altered identity changed. Direct evidence supporting either would...
Sciuromorpha (squirrels and close relatives) are diverse in terms of body size locomotor behavior. Individual species specialized to perform climbing, gliding or digging behavior, the latter being result multiple independent evolutionary acquisitions. Each lifestyle involves characteristic loading patterns acting on bones sciuromorphs. Trabecular bone, as part bone inner structure, adapts such patterns. This network thin bony struts is subject modeling, therefore reflects habitual throughout...
Sciuromorph rodents are a monophyletic group comprising about 300 species with body mass range spanning three orders of magnitude and various locomotor behaviors that we categorized into arboreal, fossorial aerial. The purpose this study was to investigate how the interplay ecology affects morphology sciuromorph apparatus. most proximal skeletal element hind limb, i.e. femur, selected, because it shown reflect functional signal in mammalian taxa. We analyzed univariate traits (effective...
Varanids are the only non-avian sauropsids that known to approach warm-blooded mammals in stamina. Furthermore, a much higher maximum metabolic rate (MMR) gives endotherms (including birds) stamina than crocodiles, turtles, and non-varanid lepidosaurs. This has led researchers hypothesize mammalian endothermy evolved as second step after acquisition of elevated MMR non-mammalian therapsids from plesiomorphic state low rates. In recent amniotes, correlates with index blood flow into femur ( Q...
Deninger’s bears (Ursus deningeri) have been studied less frequently than Ursus spelaeus s.l. Our objective is to present, for the first time, an analysis of skull shape U. deningeri.Bear crania and mandibles were digitised with a Microscribe or CT-scanned surface models subsequently landmarked. The landmarks chosen based on compromise between functional morphology sample size.Results show that deningeri display very similar morphologies allometric trajectories, both each other Ailuropoda...
The morphology of both crowns and tooth-roots reflects dietary specialisation in mammalian carnivores. In this article, we analyse the tooth-root maxillary teeth from CT scans living bears (Ursus arctos, Ursus americanus, maritimus, thibetanus, Melursus ursinus, Helarctos malayanus, Tremarctos ornatus Ailuropoda melanoleuca) order to make inferences about diet feeding behaviour extinct cave bear spelaeus sensu lato). Specifically, investigate two major mitochondrial clades recognized by...
The traditional terminology of 'scythe' or 'sickle' shaped is observed to be flawed as an effective descriptor for pectoral fin shape in pachycormids. diversity pachycormid shapes assessed across the 14 recognised genera that preserve complete fins, and improved terms are defined more effectively describe their form, supported by anatomical observation aspect ratio analysis individual corroborated landmark analysis. Three clear distinct structural morphotypes emerge (falceform, gladiform,...
The extinct Haast's eagle or harpagornis ( Hieraaetus moorei ) is the largest known eagle. Historically, it was first considered a predator, then scavenger, but most recent authors have favoured an active hunting ecology. However, veracity of proposed similarities to carrion feeders has not been thoroughly tested. To infer feeding capability and behaviour in harpagornis, we used geometric morphometric finite-element analyses assess shape biomechanical strength its neurocranium, beak talons...
The pygmy marmoset, the smallest of anthropoid primates, has a broad distribution in Western Amazonia. Recent studies using molecular and morphological data have identified two distinct species separated by Napo Solimões-Amazonas rivers. However, reconciling this new biological evidence with current taxonomy, i.e., subspecies, Cebuella pygmaea (Spix, 1823) niveiventris (Lönnberg, 1940), was problematic given uncertainty as to whether Spix's marmoset ( pygmaea) collected north or south...
The diet of the cave bear (Ursus spelaeus) is a controversial topic, as different paleobiological approaches (e.g. dental wear, isotopic biochemistry, skull morphometrics) result in dietary inferences for bear, ranging from carnivory to pure herbivory. Here, we review main results obtained these approaches, with special emphasis on those morphometric analyses craniodental skeleton. Then, compute between-group Principal Components Analysis set 3D-landmarks digitized 103 mandibles living bears...
The dodo ( Raphus cucullatus ) might be the most enigmatic bird of all times. It is, therefore, highly remarkable that no consensus has yet been reached on its body mass; previous scientific estimates mass vary by more than 100%. Until now, vast amount bones stored at Natural History Museum in Mauritius not studied morphometrically nor relation to mass. Here, a new estimate dodo’s is presented based largest sample femora ever measured n = 174). In order do this, we have used regression...
ABSTRACT With respect to its large size and abundance, Eryops is an important representative of Permo‐Carboniferous basal tetrapods one the best‐known temnospondyl amphibians this period. This taxon forms a significant component Early Permian tetrapod fauna Texas New Mexico here we describe new record skull remains, first from Brushy Creek (30 km northeast Seymour) in (Petrolia Formation, Wichita Group; Lower – lower Artinskian). Our material, found 2015, consists left nasal, jaw fragment...
We propose a new method for denoising of 3D CT scans with few data. Like any other form imaging data, are susceptible to noise and artifacts. Noise in scan images is not only stochastic, but can be frequency dependent introduced by the measuring device itself or signal processing algorithms. Unfortunately, most state-of-the-art Deep Learning methods mainly focusing on random only. Therefore, we scans, which based AutoEncoder, GAN, self-supervised learning. Our works also noise. It exploits...
The Namur area in Belgium is useful to study brown ( Ursus arctos ) and cave bears spelaeus as the assemblage contains little temporal no geographical variation. Here, we aim assess ontogenetic allometry within bears, well ecomorphological differences between adult (n = 9), 5) juvenile 3). Landmarks for 3D digitization of mandible were chosen based on taphonomical damage specimens. Extant extinct Pleistocene digitized with a Microscribe G2. Generalized Procrustes superimposition was...