C. suciensis is known from a single internal mold fossil found in north-western Washington State.[1] The holotype specimen was collected on Sucia Island from the south side of Fossil Bay in a group of rock described as "Haslam fossiliferous shale". The area was stated by Roy Davidson McLellan to be fossil rich and Ward in 1978 assigned the strata to the Campanian age Cedar District Formation. The strata preserve what is though to have been a shallow marine shelf environment that also had ammonites and inoceramid bivalves.[2] The formation has also preserved fossils of other terrestrial organisms including a basal cornalean flowering plant, Suciacarpa starrii and a theropod femur, the first dinosaur identified from Washington State.[2][3] There is differing opinion regarding what latitude t