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.
Rotaurisaurus
The skull was discovered in 1960 at the Crisp and Gunn Quarry near Hobart, Tasmania. This quarry contains rock layers from the Knocklofty Formation, which is dated to the early Triassic Period. For years this skull was believed to belong to a juvenile individual of "Chomatobatrachus halei", a species of lydekkerinid common in Tasmanian quarries. It was listed as such during John Cosgriff's 1974 review of Tasmanian temnospondyls. The "Rotaurisaurus" specimen was contained in a collapsed block of red siltstone which originally overlaid the grey siltstone of the formation's Poets Road Member. The Poets Road Member contained such fossils as a skeleton of the early archosaur relative "Tasmaniosaurus triassicus", and is believed to hail between the Early Induan and Early Olenekian ages of the early Triassic, about 250 million years ago.