Evolution of cranial telescoping in echolocating whales (Cetacea: Odontoceti)

  title={Evolution of cranial telescoping in echolocating whales (Cetacea: Odontoceti)},
  author={Morgan Churchill and Jonathan H Geisler and Brian Lee Beatty and Anjali Goswami},
Odontocete (echolocating whale) skulls exhibit extreme posterior displacement and overlapping of facial bones, here referred to as retrograde cranial telescoping. To examine retrograde cranial telescoping across 40 million years of whale evolution, we collected 3D scans of whale skulls spanning odontocete evolution. We used a sliding semilandmark morphometric approach with Procrustes superimposition and PCA to capture and describe the morphological variation present in the facial region… 

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