Apsopelix agilis were a type of bony fish that existed about 95-80 million years ago in the shallow waters of the Western Interior Seaway and Hudson Seaway.Size was about 1.5 feet or 10-12cm, most likely they lived in schools but are seldem preserved as fossils. They were prey to the Thalassomedon haningtoni who lived 93-90 Mya.