Scale morphology and squamation of the Late Silurian osteichthyan Andreolepis from Gotland, Sweden

  title={Scale morphology and squamation of the Late Silurian osteichthyan Andreolepis from Gotland, Sweden},
  author={Donglei Chen and Philippe Janvier and Per Erik Ahlberg and Henning Blom},
  journal={Historical Biology},
  pages={411 - 423}
The origin of osteichthyans (bony fishes and tetrapods) dates back to the Late Silurian, but the early evolution of the group is poorly understood. Andreolepis is one of the oldest known osteichthyans, but exclusively documented by detached and fragmentary dermal microremains. A large data-set of Andreolepis scales from the Silurian of Gotland has been used to explore the scale morphology on different parts of the body. Landmark-based geometric morphometrics together with comparative anatomy… 

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