Luke Barlow

1 INTRODUCTION A defining characteristic of all mammals is their ability to produce milk for their young, facilitating postnatal development before they are capable of independent feeding (Iverson, 2007). For effective suckling, the therian neonate (marsupial and placental mammals) must form both anterior and posterior oral seals to generate the negative intraoral pressure necessary to draw milk into the oral cavity (Crompton, 1995).

Abstract Pterosaurs were the first vertebrate flyers and lived for over 160 million years. However, aspects of their flight anatomy and flight performance remain unclear. Using laser-stimulated fluorescence, we observed direct soft tissue evidence of a wing root fairing in a pterosaur, a feature that smooths out the wing–body junction, reducing associated drag, as in modern aircraft and flying animals.

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