Pteranodon
Pteranodon (; from Greek πτερόν ( pteron, "wing") and ἀνόδων (anodon, "toothless") is a genus of pterosaur that included some of the largest known flying reptiles, with wingspans over 8 meters (26 feet). They lived during the late Cretaceous geological period of North America in present-day Kansas, Alabama, Nebraska, Wyoming, and South Dakota. More fossil specimens of "Pteranodon" have been found than any other pterosaur, with about 1,200 specimens known to science, many of them well preserved with nearly complete skulls and articulated skeletons. It was an important part of the animal community in the Western Interior Seaway.
Strabops
As the other strabopids, "Strabops" was a small-sized arthropod, measuring only 11 centimetres (4.3 inches) in length. Other Cambrian arthropods reached much greater lengths, such as the gigantic anomalocarid genus "Anomalocaris" that surpassed . However, it was the largest of the strabopids, surpassing "Paleomerus" (9.3 cm, 3.7 in) and "Parapaleomerus" (9.2 cm, 3.6 in).