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名詞

polacanthid (複数形 polacanthids)

1. (zoology) Any ankylosaurian of the nodosaurid or ankylosaurid subfamily Polacanthinae.
   • 1993, Kirkland, J. I., “Polacanthid nodosaurs from the Upper Jurassic and Lower Cretaceous of the east-central Colorado Plateau”, in Journal of Vertebrate Paleontology, volume 13, title, page 44A:

     Polacanthid nodosaurs from the Upper Jurassic and Lower Cretaceous of the east-central Colorado Plateau

   • 2008, Adam Yates, Guide to Wild Dinosaurs‎^[1], page 121:

     There were no large lateral spikes that are present in nodosaurids and polacanthids hut it did share fused half-rings of neck armour with polacanthids.

   • 2012, Michael K. Brett-Surman, The Complete Dinosaur‎^[2], page 510:

     For example, premaxillary teeth are present in the primitive polacanthid Gargoyleosaurus, the primitive nodosaurid Silvisaurus, and the primitive ankylosaurid Cedarpelta.

Further reading

• Polacanthidae on Wikipedia.