Which of the following organisms were NOT extinct by the end of the Cretaceous [Kri-TAY-shuhs] period?

W) Ichthyosaurs [IK-thee-uh-sawrs]

X) Cycliophora [sy-KLEEUH-fruh]

Y) Quetzalcoatlus [ket-sahl-koh-AHT-luhs]

Z) Plesiosaurs [PLEE-see-uh-sawrs]
X) CYCLIOPHORA