• Publications
  • Influence
Phylogenetic Relationships of Mesozoic Turtles
TLDR
This revised topology has important implications for the evolution of several character complexes, because it implies that the common ancestor of all living turtles must have had a partially braced brain case and a primitive trochlear mechanism.
DEVELOPING A PROTOCOL FOR THE CONVERSION OF RANK-BASED TAXON NAMES TO PHYLOGENETICALLY DEFINED CLADE NAMES, AS EXEMPLIFIED BY TURTLES
TLDR
This work may provide a useful road map to those intent on converting their traditional rank-based nomenclatures to explicitly phylogenetic nomenClatures under the precepts of the PhyloCode.
Palaeoecology of Triassic stem turtles sheds new light on turtle origins
  • W. Joyce, J. Gauthier
  • Environmental Science, Geography
    Proceedings of the Royal Society of London…
  • 7 January 2004
TLDR
The palaeoecology of extinct turtles is investigated by first demonstrating that the forelimbs of extant turtles faithfully reflect habitat preferences, and it is found that although the common ancestor of all living turtles was aquatic, the earliest turtles clearly lived in a terrestrial environment.
A Divergence Dating Analysis of Turtles Using Fossil Calibrations: An Example of Best Practices
TLDR
This work provides the first explicitly justified minimum and soft maximum age constraints on 22 clades of turtles following best practice protocols and generates novel age-of-origination estimates for clades within crown Testudines.
A Review of the Fossil Record of Basal Mesozoic Turtles
  • W. Joyce
  • Environmental Science, Geography
    Bulletin of the Peabody Museum of Natural History
  • 12 April 2017
TLDR
Sedimentological, anatomical, and histological data universally hint at terrestrial habitat preference among the earliest stem turtles, but a more mixed, though unambiguously continental signal is apparent further towards the crown.
Transitional fossils and the origin of turtles
TLDR
This work reanalysed a recent dataset that allied turtles with the lizard–tuatara clade and found that the inclusion of the stem turtle Proganochelys quenstedti and the ‘parareptile’ Eunotosaurus africanus results in a single overriding morphological signal, with turtles outside Diapsida.
A toothed turtle from the Late Jurassic of China and the global biogeographic history of turtles
TLDR
A revision of the global distribution of fossil and recent turtle reveals that the three primary lineages of derived, aquatic turtles, including the crown, Paracryptodira, Pan-Pleurodira, and Pan-Cryptodira can be traced back to the Middle Jurassic of Euramerica, Gondwana, and Asia, respectively, which resulted from the primary break up of Pangaea at that time.
THE FIRST COMPLETE SKELETON OF SOLNHOFIA PARSONSI (CRYPTODIRA, EURYSTERNIDAE) FROM THE UPPER JURASSIC OF GERMANY AND ITS TAXONOMIC IMPLICATIONS
TLDR
The carcass of the new specimen was embedded in finely laminated limestones and shows little sign of disintegration or scavenging, suggesting hostile bottom conditions with very low water energy during deposition, and agrees with recent published models for the origin of the lithographic limestones of southern Germany.
A new xinjiangchelyid turtle from the Middle Jurassic of Xinjiang, China and the evolution of the basipterygoid process in Mesozoic turtles
TLDR
The homology of basipterygoid processes is confidently demonstrated based on a comprehensive review of the basicranial anatomy of Mesozoic turtles and a new nomenclatural system is introduced for the carotid canal system of turtles.
...
...