A5047505992- Paleontology and Evolutionary Biology
- Evolution and Paleontology Studies
- Morphological variations and asymmetry
- Geological formations and processes
- Ichthyology and Marine Biology
- 3D Surveying and Cultural Heritage
- Paleontology and Stratigraphy of Fossils
- Geological Modeling and Analysis
- Remote Sensing and LiDAR Applications
- Amphibian and Reptile Biology
- Geological and Geophysical Studies Worldwide
- Satellite Image Processing and Photogrammetry
- Optical measurement and interference techniques
- Pleistocene-Era Hominins and Archaeology
- Turtle Biology and Conservation
- Geological Formations and Processes Exploration
- Geological Studies and Exploration
- Anatomy and Medical Technology
- Winter Sports Injuries and Performance
- Geological and Geochemical Analysis
- Mediterranean and Iberian flora and fauna
- Wildlife Ecology and Conservation
- Geochemistry and Geologic Mapping
- Forensic Anthropology and Bioarchaeology Studies
- Computational Physics and Python Applications
Universidade Federal de Minas Gerais
2024-2025
Liverpool John Moores University
2020-2024
University of Bonn
2015-2021
Abstract The collection and dissemination of vertebrate ichnological data is struggling to keep up with techniques that are becoming commonplace in the wider palaeontological field. A standard protocol required ensure recorded, presented archived a manner will be useful both contemporary researchers, future generations. Primarily, our aim make 3D capture practice, provide guidance on how such can communicated effectively (both via literature other means) openly perpetuity. We recommend data,...
Here we describe dinosaur tracks from the Langenberg Quarry near Goslar (Lower Saxony) that represent first footprints Late Jurassic of Germany discovered outside Wiehen Mountains.The are preserved in Kimmeridgian marginal marine carbonates.They vary length 36 to 47 cm and were made by theropod dinosaurs.The original tracksite with 20 was destroyed quarrying soon after its discovery 2003.Only five best defined excavated.Based on scanned-in analog photographs which taken during excavation, a...
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....
Fossil tracks are important palaeobiological data sources. The quantitative analysis of their shape, however, has been hampered by high variability and lack discrete margins landmarks. We here present the first approach using deep convolutional neural networks (DCNNs) to study fossil tracks, overcoming limitations previous statistical approaches. employ a DCNN discriminate between theropod ornithischian dinosaur based on total 1372 outline silhouettes. consistently outperformed human experts...
The Late Triassic (Norian-early Rhaetian) Fleming Fjord Formation of central East Greenland preserves a diverse fossil fauna, including both body and trace fossils.Trackways large quadrupedal archosaurs, although already reported in 1994 mentioned subsequent publications, are here described figured detail for the first time, based on photogrammetric data collected during fieldwork 2012.Two trackways can be referred to Eosauropus , while third, bipedal trackway may Evazoum, which have been...
3D digitisation of surfaces became a standard procedure in ichnology recent years. models allow not only for the digital preservation vulnerable ichnological records, but also illustration, qualitative description, and quantitative analysis fossils. Here we discuss how to obtain photographs photogrammetry, generate, scale, orient models, extract visualisations, measurements, coordinates data analysis. Different visualisation approaches are discussed compared, including widely used techniques...
Tridactyl theropod and ornithischian dinosaur tracks trackways from Imilchil Isli formations (Middle–?Late Jurassic, Bajocian–?) of the central High Atlas region (Morocco) are described. The Formationconsists brackish marine-continental deposits, Formation is a continental red-bed succession. Considering numerous new footprint discoveries, including recently described Polyonyx sauropod trackways, tridactyl Imilchil-Tounfite revised. Dominating footprints resembling ichnogenus Changpeipus...
Abstract The dinosaur track record features numerous examples of trackways with elongated metatarsal marks. Such ‘elongate tracks’ are often highly variable and characterized by indistinct outlines abbreviated or missing digit impressions. Elongate tracks well‐known from the Paluxy River bed Texas, where some have been interpreted as ‘man creationists due to their superficially human‐like appearance. horizontal orientation marks led now widely accepted idea a facultative plantigrade,...
Abstract The functional anatomy of the hindlimb bipedal dinosaurs has been intensively studied. Yet, surprisingly little work done concerning adaptation digits for terrestrial locomotion. While complete and articulated pes skeletons are scarce, shape is abundantly recorded by fossil footprints. We elucidate significance footprint size locomotion using a large sample (n = 303) tridactyl dinosaur footprints from broad range geographical localities time slots. Size variation characterized...
Forelimb posture in sauropod dinosaurs is still poorly understood. Although a laterally directed (semisupinated) manus the plesiomorphic condition sauropodomorphs, track record prevailingly shows anterolateral to anterior orientations, suggesting high degree of pronation. The ?Middle Jurassic Tafaytour tracksites described herein preserve at least 10 trackways, nine which show oriented, and two examples even posterolaterally manual impressions. Located Argana Basin Western High Atlas,...
Limb phase, the timing of footfalls in quadrupedal locomotion that describes common gaits such as trot and pace gait,1,2 is widely believed to be difficult or even impossible estimate for extinct tetrapods.3-5 We here present a fundamentally new approach allows estimating limb phase based on variation patterns long trackways. The tested trackways modern mammals, where estimates generally correspond well with actually employed phase. then phases giant wide-gauged sauropod dinosaurs three from...
Dinosaur footprints often occur in Late Triassic–Early Jurassic continental sedimentary rocks. While many such tracks can readily be associated with the kinds of dinosaurs that made them, makers some have been controversial. Large tridactyl (three-toed) ichnogenus Eubrontes are thought by most paleontologists to theropod dinosaurs, but workers think their were basal sauropodomorph ("prosauropod") dinosaurs. The four-toed footprint Otozoum is usually interpreted as a prosauropod print,...
The Triassic basal sauropodomorph Plateosaurus trossingensis is well-known from mass accumulations at the German localities of Trossingen and Halberstadt Swiss locality Frick, significant especially regarding its taphonomy proposed developmental plasticity.These implications, however, rely on assumption that this material derives a single species, which has been questioned.Here we describe new skull Frick including eight complete six partial skulls, more than doubling number known skulls P....
Comprising more than 350 dinosaur footprints and at least 38 trackways, the TY tracksite described herein is located close to border of NW Lesotho, near Teyateyaneng (TY), probably identical site originally mentioned by Dornan in 1908. The tridactyl are exposed as natural casts on a cliff overhang fallen block base uppermost Elliot Formation (Sinemurian, Lower Jurassic). High-resolution photogrammetry zoom lenses facilitated detailed ichnological documentation otherwise inaccessible...
Synopsis Dinosaur nesting biology has been an intriguing research topic, though dinosaur behaviors were relatively less illuminated because of the constraints fossil record. For instance, hatching asynchrony, where eggs in a single clutch hatch at different times, is unique to modern neoavian birds but was also suggested be present oviraptorid dinosaurs based on possible partial four embryo-containing from Mongolia. Unfortunately, unequivocal evidence for origination these lacking. Here we...
(2018). First evidence of a large predatory plesiosaurian from the Lower Cretaceous non-marine 'Wealden facies' deposits northwestern Germany. Alcheringa: An Australasian Journal Palaeontology: Vol. 42, No. 4, pp. 501-508.
The objective definition of footprint margins poses a central problem in ichnology. transition from the to surrounding sediment is often continuous, and wall complex, requiring interpolation, approximation, priori assumptions about trackmaker anatomy arrive at feasible interpretations shapes. degree subjectivity such substantial, outlines produced by separate researchers can differ greatly. As consequence, statistical shape analysis, regardless if based on linear angular measurements or as...