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Palate evolution in early-branching crocodylomorphs: Implications for homology, systematics, and ecomorphology.
Anat Rec (Hoboken)
October 2022
Evolutionary Studies Institute, University of Witwatersrand, Johannesburg, South Africa.
Living crocodylomorphs have an ossified secondary palate with a posteriorly positioned choana that enables their semi-aquatic, predatory ecology. In contrast, the earliest branching members of Crocodylomorpha have an open palate with anteriorly positioned choanae. The evolution of an ossified secondary palate and a posteriorly positioned choana features strongly in hypotheses of broad-scale phylogenetic relationships within Crocodylomorpha.
View Article and Find Full Text PDFEye Movements in Frogs and Salamanders-Testing the Palatal Buccal Pump Hypothesis.
Integr Org Biol
June 2019
Department of Biological Sciences, UMass Lowell, Lowell MA 01854 USA.
In frogs and salamanders, movements of the eyeballs in association with an open palate have often been proposed to play a functional role in lung breathing. In this "palatal buccal pump," the eyeballs are elevated during the lowering of the buccal floor to suck air in through the nares, and the eyeballs are lowered during elevation of the buccal floor to help press air into the lungs. Here, we used X-Ray Reconstruction of Moving Morphology to investigate eye movements during lung breathing and feeding in bullfrogs and axolotls.
View Article and Find Full Text PDFThe Palatal Interpterygoid Vacuities of Temnospondyls and the Implications for the Associated Eye- and Jaw Musculature.
Anat Rec (Hoboken)
July 2017
Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstraße 43, Berlin, 10115, Germany.
A diagnostic feature of temnospondyls is the presence of an open palate with large interpterygoid vacuities, unlike the closed palate of most other early tetrapods, in which the vacuities are either slit-like or completely absent. Attachment sites on neurocranium and palatal bones in temnospondyls allow the reconstruction of a powerful m. retractor bulbi and a large, sheet-like m.
View Article and Find Full Text PDFPalate anatomy and morphofunctional aspects of interpterygoid vacuities in temnospondyl cranial evolution.
Naturwissenschaften
October 2016
Museum für Naturkunde, Leibniz-Institut für Evolutions- and Biodiversitätsforschung, Invalidenstraße 43, 10115, Berlin, Germany.
Temnospondyls were the morphologically and taxonomically most diverse group of early tetrapods with a near-global distribution during the Palaeozoic and Mesozoic. Members of this group occupied a range of different habitats (aquatic, amphibious, terrestrial), reflected by large morphological disparity of the cranium throughout their evolutionary history. A diagnostic feature of temnospondyls is the presence of an open palate with large interpterygoid vacuities, in contrast to the closed palate of most other early tetrapods and their fish-like relatives.
View Article and Find Full Text PDFThe easy way versus the hard way: Planning the open palate maxillary small-diameter implant-retained denture.
Dent Today
November 2013
International Academy of Dento-Facial Esthetics, USA.
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