The Suciasaurus rex is hereby designated as the official dinosaur of the state of Washington.

Finding—2023 c 330: "The legislature finds that the Suciasaurus rex, the first and, as of July 23, 2023, only dinosaur discovered in Washington state, should be designated as the state dinosaur. In May 2012, paleontologists discovered a portion of a left femur of a theropod dinosaur at Sucia Island state park in the San Juan Islands. Theropods are bipedal carnivorous dinosaurs that include Tyrannosaurus and Velociraptor. While scientists are unsure exactly what type of theropod the fossil belongs to, evidence suggests it may be a species similar to Daspletosaurus. The dinosaur has been nicknamed Suciasaurus rex.

Dinosaurs are not usually found in Washington because of its proximity to an active tectonic plate boundary and the high degree of human development. Some scientists believe the Suciasaurus rex lived somewhere between Baja California, Mexico, and northern California, and its fossil traveled to Washington along with a portion of the western edge of North America that was displaced to British Columbia in the Late Cretaceous period, but the fossil's exact location of origin remains controversial." [ 2023 c 330 s 1.]