The "Globe-crinoids," an extinct order of Echinodermata.
An extinct order of birds having a long vertebrated tail with quills along each side of it.
An extinct order of herbivorous dinosaurs having the feet of a saurian type, instead of birdlike, as they are in many dinosaurs.
An extinct order of ostrichlike aquatic birds having teeth, which are set in a groove in the jaw.
One of an extinct order of reptiles, including Mosasaurus and allied genera.
An extinct order of reptiles which stood erect on the hind legs, and resembled birds in the structure of the feet, pelvis, and other parts.
Defn: An extinct order of marine reptiles, including Ichthyosaurus and allied forms; -- called also Ichthyopterygia.
Defn: An extinct order of Merostomata, of which the genus Eurypterus is the type.
Defn: One of anextinct order of reptiles, including Mosasaurus and allied genera.
An extinct order of Amphibia, including the typical genus Labyrinthodon, and many other allied forms, from the Carboniferous, Permian, and Triassic formations.
An extinct orderof Merostomata, of which the genus Eurypterus is the type.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "extinct order" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.