Catopsbaatar
Catopsbaatar is a genus of multituberculate, an extinct order of rodent-like mammals. It lived in what is now Mongolia during the late Campanian age of the Late Cretaceous Period, about 72 million years ago. The first fossils were collected in the early 1970s, and the animal was named as a new species of the genus "Djadochtatherium " in 1974, "D. catopsaloides". The specific name refers to the animal's similarity to the genus "Catopsalis". The species was moved to the genus "Catopsalis" in 1979, and received its own genus ("Catopsbaatar", Greek and Mongolian for "visible hero") in 1994. Five skulls, one molar, and one skeleton with a skull are known; the latter is the genus' most complete specimen. "Catopsbaatar" was a member of the family Djadochtatheriidae.
Cataractonium
There is considerable evidence for Pre-Roman activity in the environs of the eventual Roman settlement. Evidence on both sides of the Swale suggests both Bronze Age and Iron Age activity. The Bronze Age remains take the form of a chambered cairn some 500m south-east of Catactonium, a ceramic vessel 200m north and a bronze rapier 150 north-east. The cairn has associated domestic occupation which continues into the Iron Age in the form of a multi-period roundhouse.
Though there is no definitive date for the building of the fort, it is likely to have been around  70 during the governorship of Q. Petillius Cerialis to support the campaign of Agricola in Scotland. It was also likely to have been in use during the Brigantes revolt in 155 under the governorship of Gn. Julius Verus. The first site appeared to be little more than a timber hill fort, but the later and bigger settlement was constructed in stone and had a civilian population too.