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144 results
  • Observations on carapace color change in the juvenile big-headed turtle (Platysternon megacephalum). [Journal Article]
    PeerJ 2019; 7:e7331Cao D, Ge Y, … Gong S
  • The carapace color of newborn big-headed turtles (Platysternon megacephalum) is polymorphic and usually consists of two phenotypes: yellowish brown and olive green. As the turtles grew, over the first year of life, its carapace gradually turned from yellowish brown to chestnut brown, or from olive green to dark brown, depending on the phenotype. Meanwhile, the turtle's plastron remained an orange…
  • Molecular structure of sauropsid β-keratins from tuatara (Sphenodon punctatus). [Journal Article]
    J Struct Biol 2019; 207(1):21-28Parry DAD, Fraser RDB, … Gemmell N
  • The birds and reptiles, collectively known as the sauropsids, can be subdivided phylogenetically into the archosaurs (birds, crocodiles), the testudines (turtles), the squamates (lizards, snakes) and the rhynchocephalia (tuatara). The structural framework of the epidermal appendages from the sauropsids, which include feathers, claws and scales, has previously been characterised by electron micros…
  • Duplications in Corneous Beta Protein Genes and the Evolution of Gecko Adhesion. [Journal Article]
    Integr Comp Biol 2019; 59(1):193-202Gamble T
  • Corneous proteins are an important component of the tetrapod integument. Duplication and diversification of keratins and associated proteins are linked with the origin of most novel integumentary structures like mammalian hair, avian feathers, and scutes covering turtle shells. Accordingly, the loss of integumentary structures often coincides with the loss of genes encoding keratin and associated…
  • Structure and function of skin in the pelagic sea snake, Hydrophis platurus. [Journal Article]
    J Morphol 2019; 280(4):544-554Lillywhite HB, Menon GK
  • We describe and interpret the functional morphology of skin of the Yellow-bellied sea snake, Hydrophis platurus. This is the only pelagic sea snake, and its integument differs from what is known for other species of snakes. In gross appearance, the scales of H. platurus consist of non-overlapping, polygonal knobs with flattened outer surfaces bearing presumptive filamentous sensillae. The deep re…
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