A5032139915- Geology and Paleoclimatology Research
- Morphological variations and asymmetry
- Evolution and Paleontology Studies
- Paleontology and Stratigraphy of Fossils
- Marine Biology and Ecology Research
- Genetics, Bioinformatics, and Biomedical Research
- Geological and Geochemical Analysis
- Species Distribution and Climate Change
- Geochemistry and Geologic Mapping
- Pleistocene-Era Hominins and Archaeology
- Isotope Analysis in Ecology
- Paleontology and Evolutionary Biology
- Image Processing and 3D Reconstruction
- Geological formations and processes
- Marine and environmental studies
- Wildlife Ecology and Conservation
- Reservoir Engineering and Simulation Methods
- Geological and Geophysical Studies
- Advanced Statistical Methods and Models
- Geographies of human-animal interactions
- Bat Biology and Ecology Studies
- Genetic and phenotypic traits in livestock
- Archaeology and ancient environmental studies
- Biomedical Text Mining and Ontologies
- Travel Writing and Literature
Johnson Matthey (United Kingdom)
2013-2024
Nanjing University
2014-2023
Natural History Museum
2008-2019
University College London
2012-2018
Chinese Academy of Sciences
2012-2018
Nanjing Institute of Geology and Paleontology
2012-2018
University of Connecticut
2014-2017
University of California, Los Angeles
2014-2017
National Museum of Natural History
2014-2017
Smithsonian Institution
2014-2017
A finer record of biodiversity We have pressing, human-generated reasons to explore the influence environmental change on biodiversity. Looking into past can not only inform our understanding this relationship but also help us understand current change. Paleontological records depend fossil availability and predictive modeling, however, thus tend give a picture with large temporal jumps, millions years wide. Such scale makes it difficult truly action forces ecological processes. Enabled by...
Mass extinctions are recognized through the study of fossil groups across event horizons, and from analyses long-term trends in taxonomic richness diversity. Both approaches have inherent flaws, data that once seemed reliable can be readily superseded by discovery new fossils and/or application analytical techniques. Herein current state Cretaceous-Tertiary (K-T) biostratigraphical record is reviewed for most major clades, including: calcareous nannoplankton, dinoflagellates, diatoms,...
Outline-based morphometric methods have been more or less restricted to the consideration of closed curves and plagued by problems related maintenance close biological correspondence across all forms within a sample. Methods developed herein generalize extend eigenshape method outline analysis along following lines: (1) open curves, (2) improvement interobject via incorporation information provided landmarks, (3) extension three-dimensional (open closed) curves. In addition, techniques for...
Research Article| November 01, 1991 How complete are Cretaceous /Tertiary boundary sections? A chronostratigraphic estimate based on graphic correlation NORMAN MACLEOD; MACLEOD 1Department of Geological and Geophysical Sciences, Princeton University, Princeton, New Jersey 08544 Search for other works by this author on: GSW Google Scholar GERTA KELLER Author Article Information Publisher: Society America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print 0016-7606 GSA Bulletin (1991) 103...
Abstract: Previous attempts to sex juvenile skeletons have focused on the application of qualitative or semi‐quantitative techniques. This study applies a variety geometric morphometric methods, including eigenshape analysis, this problem. Six metric criteria for ilia were tested with aim investigating previous ideas concerning sexually diagnostic characters. uses 25 from juveniles known age and Christ Church, Spitalfields, London. Ninety‐six percent correctly identified as male female using...
The evolutionary history of the Order Carnivora is marked by episodes iterative evolution. Although this pattern widely reported in different carnivoran families, mechanisms driving evolution skull morphology remain largely unexplored. In study we use coordinate-point extended eigenshape analysis (CP-EES) to summarize aspects shape large fissiped carnivores. Results these comparisons enable evaluation role factors constraining design. Empirical morphospaces derived from mandible anatomy show...
Research Article| May 01, 1991 Hiatus distributions and mass extinctions at the Cretaceous/Tertiary boundary Norman MacLeod; MacLeod 1Department of Geological Geophysical Sciences, Princeton University, Princeton, New Jersey 08544 Search for other works by this author on: GSW Google Scholar Gerta Keller Author Article Information Publisher: Society America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print 0091-7613 Geology (1991) 19 (5): 497–501....
The depositional history of Upper Miocene through Recent sediments from DSDP Site 214 (Ninetyeast Ridge, Indian Ocean) is reexamined. Samples the Globorotalia tumida planktic foraminiferal lineage, originally obtained these by Malmgren et al. (1983), serve as empirical basis for recognition punctuated anagenesis a distinct mode phenotypic evolution and have been subject numerous additional investigations. However, conclusions reached previous authors depend strictly on validity original...
Plankton counting and analysis is essential in ecological study, yet scant literature exists as to the reliability of those counts consistency experts who make counts. To assess how variable expert taxonomic identifications are, a set six archived mesozooplankton samples from series Longhurst Hardy Recorder net hauls were counted by zooplankton analysts located at marine laboratories. Sample repeated on two separate days with over 700 target specimens identified each day across samples....