An evolutionary and developmental perspective on the loss of regionalization in the limbs of derived ichthyosaurs

@article{Maxwell2013AnEA,
  title={An evolutionary and developmental perspective on the loss of regionalization in the limbs of derived ichthyosaurs},
  author={Erin E. Maxwell and Torsten M. Scheyer and Donald A Fowler},
  journal={Geological Magazine},
  year={2013},
  volume={151},
  pages={29 - 40}
}
Abstract Ichthyosaurs, a lineage of extinct Mesozoic marine reptiles, have garnered attention in both the palaeontological and developmental literature for the unique limb morphology seen in derived genera. These morphologies include an increase in the number of phalanges per digit (hyperphalangy) and in the number of digits (hyperdactyly), but most interestingly also a shift in element identity. Elements distal to the stylopodium acquire characteristics of mesopodial elements, such as a… 

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