Definition of elasmosaurian in US English:

elasmosaurian

adjective

  • See elasmosaur

    • ‘The cervical vertebrae are very short, suggesting pliosaurian relationships, whereas the scapulae and coracoids seem to be elasmosaurian.’
    • ‘Several associated series of elasmosaurian cervical vertebrae were used to measure ranges of potential flexion.’