A5020850426- Paleontology and Evolutionary Biology
- Evolution and Paleontology Studies
- Ichthyology and Marine Biology
- Amphibian and Reptile Biology
- Paleontology and Stratigraphy of Fossils
- Morphological variations and asymmetry
- Pleistocene-Era Hominins and Archaeology
- Geology and Paleoclimatology Research
- Turtle Biology and Conservation
- dental development and anomalies
- Optical measurement and interference techniques
- Marine and environmental studies
- Plant Diversity and Evolution
- Fish biology, ecology, and behavior
- Forensic Anthropology and Bioarchaeology Studies
- Primate Behavior and Ecology
- Ecology and biodiversity studies
- Calcium Carbonate Crystallization and Inhibition
- Marine animal studies overview
- Assisted Reproductive Technology and Twin Pregnancy
- Species Distribution and Climate Change
- Bone Tissue Engineering Materials
- Environmental and Biological Research in Conflict Zones
- Genomics and Phylogenetic Studies
- Geochemistry and Elemental Analysis
Jilin University
2016-2024
University of Toronto
2015-2024
Jilin International Studies University
2018-2024
American Museum of Natural History
1981-2022
Inter-University Accelerator Centre
2022
Carnegie Museum of Natural History
1981-2021
National Chung Hsing University
2016-2020
National Cheng Kung University
2016-2018
National Central University
2016-2017
Humboldt-Universität zu Berlin
2009
Journal Article A reevaluation of early amniote phylogeny Get access MICHEL LAURIN, LAURIN 1Department Zoology, Erindale Campus, University Toronto, Mississauga, Ontario, Canada L5L 1C6 Search for other works by this author on: Oxford Academic Google Scholar ROBERT R. REISZ Zoological the Linnean Society, Volume 113, Issue 2, February 1995, Pages 165–223, https://doi.org/10.1111/j.1096-3642.1995.tb00932.x Published: 28 June 2008 history Received: 01 1994 Accepted: July
Abstract One of the fossil record’s most puzzling features is absence preserved eggs or eggshell for first third known 315 million year history amniote evolution. Our meagre understanding origin and evolution calcareous amniotic in general, largely based on Middle Jurassic to Late Cretaceous fossils. For dinosaurs, parsimonious inference yields a thick, hard shelled egg, so richly represented record. Here, we show that thin layer (≤100 µm) with interlocking units radiating crystals...
▪ Abstract A critical reexamination of turtle relationships continues to support a sister-group relationship turtles with clade marine reptiles, Sauropterygia, within crown-group Diapsida (Sauria). The high Homoplasy Index raises concerns about the phylogenetic information content various morphological characters in broad-scale analyses. Such analyses may also suffer from inadequate statements primary homology. Several such that have played an important role analysis (dermal armor, acromion,...
The origin and early evolution of amniotes (fully terrestrial vertebrates) led to major changes in the structure hierarchy ecosystems. first appearance herbivores played a pivotal role this transformation. After an bifurcation into Reptilia Synapsida (including mammals) 315 Ma, synapsids dominated Paleozoic vertebrate communities, with herbivorous caseids representing largest vertebrates on land. Eocasea martini gen. et sp. nov., small carnivorous caseid from Late Carboniferous, extends...
Abstract Fossilized organic remains are important sources of information because they provide a unique form biological and evolutionary information, have the long-term potential for genomic explorations. Here we report evidence protein preservation in terrestrial vertebrate found inside vascular canals rib 195-million-year-old sauropodomorph dinosaur, where blood vessels nerves would normally been present living organism. The situ synchrotron radiation-based Fourier transform infrared...
Recent controversy about the use of vertebrate fossil record for external calibration molecular clocks centers on two issues, number dates used and reliability date. Viewing matters from a palaeontological perspective, we propose three qualitative, phylogenetic criteria that can be within comparative framework selection well-constrained record. On basis these criteria, identify highly suitable new clock estimates: lungfish-tetrapod split (between 419 408 Ma), bird-crocodile 251 243...
For the first time phylogenetic relationships of early eureptiles, consisting captorhinids, diapsids, and protorothyridids, are investigated in a modern context using both parsimony Bayesian approaches. Ninety parsimony-informative characters 25 taxa were included analyses. The analysis was run with without gamma-shape parameter allowing for variable rates across characters. In addition, we ran two more analyses that 42 autapomorphies thus parsimony-uninformative order to test effect branch...
Articulated embryos from the Lower Jurassic Elliot Formation of South Africa are referable to prosauropod Massospondylus carinatus and, together with other material, provide substantial insights into ontogenetic development in this early dinosaur. The large forelimbs and head horizontally held neck indicate that hatchlings were obligate quadrupeds. In contrast, adult at least facultatively bipedal. This suggests quadrupedal gait giant sauropods may have evolved by retardation postnatal...
Tooth implantation provides important phylogenetic and functional information about the dentitions of amniotes. Traditionally, only mammals crocodilians have been considered truly thecodont, because their tooth roots are coated in layers cementum for anchorage periodontal ligament, which is turn attached to bone lining alveolus, alveolar bone. The histological properties developmental origins these three tissues studied extensively crocodilians, but identities other amniotes remain poorly...
Research Article| May 01, 2010 Speleothem climate records from deep time? Exploring the potential with an example Permian Jon Woodhead; Woodhead * 1School of Earth Sciences, University Melbourne, Victoria 3010, Australia *E-mail: jdwood@unimelb.edu.au. Search for other works by this author on: GSW Google Scholar Robert Reisz; Reisz 2Department Biology, Toronto at Mississauga, Ontario L5L 1C6, Canada David Fox; Fox 3Department Geology and Geophysics, Minnesota, Minneapolis, Minnesota 55455,...
Amniotes, tetrapods that evolved the cleidoic egg and thus independence from aquatic larval stages, appeared ca 314 Ma during Coal Age. The rapid diversification of amniotes other over course Late Carboniferous period was recently attributed to fragmentation coal-swamp rainforests 307 Ma. However, amniote fossil record is relatively sparse, with 33% diversity represented by single specimens for each species. We describe here a new species reptilian collected uppermost rocks Prince Edward...
Tooth attachment and implantation are two classical descriptors of dental anatomy. distinguishes between teeth that either fused to the jaw by bone, or suspended within a socket periodontal ligament. describes geometry this has been broadly divided into acrodonty, pleurodonty, thecodonty. Among extant amniotes, only mammals crocodilians considered truly thecodont, because they possess complex system includes ligament true tooth sockets. These amniote groups diverged from common ancestor over...