… Sirenians graze on plants, and the extinct placodont reptiles … developed into the present
flexible buoyancy control mechanism. … and func tional considerations suggest that gastroliths are …

… Thedorsal notochord is a flexible strand which existsin every vertebrate embryo, but while it
persists in the adultsof the lover vertebrates (Cyclostomes), it rapidly disappearsin the higher …

… long neck of the famed plesiosaur Elasmosaurus for the tail, … very slender teeth for filter
feeding, but plesiosaur skulls were … necks were not as flexible as those of elasmosaurs, all the …

… y pliosauridos del orden Sauropterygia (Suborden: Plesiosauria), … marine reptiles: Implications
for method of predation se … y una articulación mandibular flexible que le permitía un mejor …